Moroso has been one of the familiar names in American performance and racing hardware for decades, but the company’s catalog is considerably broader than oil pans and race-car plumbing.
Depending on what you’re building, the Moroso name can appear on everything from oil accumulators, oil pumps and racing filters to coolant expansion tanks, transmission pans, battery boxes, crankcase vacuum pumps, catch cans, timing tools and electrical hardware.
That creates an obvious question for anyone putting together a street, track or race build:
Which Moroso parts actually belong on your car?
This Moroso FAQ covers some of the company’s most useful product families, explains what the parts actually do and points out several installation mistakes that can turn a perfectly good performance component into an expensive troubleshooting exercise.
If you’re ready to shop instead of research, you can browse current Moroso performance parts at Pro Street Online.
What Does Moroso Make?
Moroso manufactures components for numerous automotive systems, including:
- Engine lubrication
- Oil control
- Crankcase ventilation
- Cooling systems
- Fuel systems
- Transmission service
- Battery relocation
- Electrical distribution
- Engine assembly
- Racing safety
- Fabricated tanks
- Engine tools
- Drag-racing hardware
Some parts are direct-fit.
Others are universal fabrication components.
That distinction is important.
A universal Moroso tank, breather or electrical component isn’t necessarily compatible with every vehicle simply because there isn’t a year/make/model restriction in the catalog.
Universal means the builder needs to verify dimensions, fittings, mounting, plumbing and system requirements.
What Is a Moroso Oil Accumulator?
An oil accumulator stores pressurized engine oil and can release that oil when engine oil pressure drops.
One example is the Moroso 23900 3-Quart Oil Accumulator, available through Pro Street Online.
The 23900 has a 3-quart capacity and uses an internal piston separating the oil side from the pressurized-air side.
During normal engine operation, engine oil pressure fills the accumulator.
If engine oil pressure suddenly falls, stored oil can flow back toward the engine.
This can be particularly useful during conditions such as:
- Hard acceleration
- Hard braking
- Sustained cornering
- Temporary oil-pickup uncovering
- Racing
- Cold-start pre-oiling
An accumulator is therefore best understood as temporary supplemental oil-pressure protection.
Does an Oil Accumulator Fix a Bad Oil System?
No.
An accumulator should not be used to disguise an underlying lubrication problem.
If an engine consistently loses oil pressure because of:
- Incorrect bearing clearance
- Worn bearings
- Bad oil pump
- Cracked pickup tube
- Incorrect oil level
- Poor oil-pan design
- Excessive oil temperature
- Aerated oil
- Pickup-to-pan clearance problems
the underlying problem needs to be corrected.
An accumulator provides temporary oil reserve.
It does not make an inadequate oiling system adequate.
Can a Moroso Accumulator Pre-Oil an Engine?
Yes.
One advantage of an accumulator system is the ability to provide pressurized oil before startup when the system is configured appropriately.
Opening the accumulator valve before cranking allows stored oil to enter the engine’s lubrication passages.
This can establish oil flow before the crankshaft and valvetrain experience normal running loads.
Pre-oiling can be particularly useful for:
- Race engines
- Engines that sit for long periods
- Expensive performance builds
- Fresh engine assemblies
How the accumulator is controlled depends on the plumbing and valve system.
Does an Oil Accumulator Add Oil Capacity?
Yes.
Once an accumulator is properly filled, the engine’s total operating oil requirement increases by the amount stored in the accumulator and associated plumbing.
For example, the Moroso 23900 has a 3-quart accumulator capacity.
That does not mean you simply dump three extra quarts into the oil pan.
The system needs to be filled and the final oil level established according to the accumulator installation procedure.
What Is Special About a Moroso Racing Oil Filter?
Moroso manufactures racing-oriented oil filters designed for performance lubrication systems.
An example is the Moroso 22460 Racing Oil Filter, a long Chevy-style filter using a:
13/16″-16 thread
and approximately:
5-1/4-inch filter height
Moroso rates the 22460 at 27 microns and designs the racing filter family around high-flow performance applications.
When selecting a racing oil filter, verify more than the thread.
You also need to check:
- Gasket diameter
- Filter height
- Mounting surface
- Bypass arrangement
- Header clearance
- Chassis clearance
- Required filtration specification
Two filters sharing the same thread aren’t automatically interchangeable.
Does a Bigger Oil Filter Automatically Flow Better?
No.
Filter performance depends on several factors:
- Filter media
- Surface area
- Internal construction
- Pressure differential
- Oil viscosity
- Bypass design
A physically larger filter can provide additional media area and capacity, but size alone doesn’t determine performance.
More importantly, never select an oil filter purely because it screws onto the engine.
The filter’s sealing surface and bypass requirements need to match the lubrication system.
What Does Oil-Filter Bypass Mean?
A filter bypass allows oil to continue flowing when pressure differential across the filter becomes excessive.
That can happen with:
- Very cold oil
- Excessively thick oil
- Restricted filter media
- High engine speed
- Contaminated filter
Bypass operation prioritizes oil flow over filtration.
That’s usually preferable to starving engine bearings of oil.
But repeated bypass operation means some oil may circulate without passing through the filter media.
Oil pressure and oil flow are related, but they are not the same thing.
What Is a Moroso High-Volume Oil Pump?
A high-volume oil pump moves more oil per revolution than its standard-volume counterpart.
For example, Moroso offers high-volume oil-pump packages for Chevrolet engine applications.
These can be useful where the engine’s oil demand has increased because of:
- Modified bearing clearances
- Additional oil-system components
- Racing operation
- External oil plumbing
- Engine modifications
A high-volume pump isn’t automatically an upgrade for every engine.
The oil pan, pickup, clearances and complete lubrication system must support the additional volume.
Why Does Oil-Pump Pickup Clearance Matter?
The oil-pump pickup needs adequate clearance from the bottom of the oil pan.
Too little clearance can restrict oil entering the pickup.
Too much clearance can make it easier for the pickup to become uncovered during:
- Acceleration
- Braking
- Cornering
Performance oiling systems therefore treat pickup position as an engineered dimension rather than simply installing the pickup wherever it happens to land.
This is one reason matched oil-pump and pickup packages can simplify race-engine assembly.
What Is a Moroso Racing Oil Pan?
Moroso produces oil pans for many performance applications.
Depending on the design, a racing oil pan may incorporate:
- Increased capacity
- Baffles
- Trap doors
- Windage control
- Crank scrapers
- Kickouts
- Specialized sump locations
- Drain fittings
- Temperature-sensor ports
The objective isn’t simply to hold more oil.
The real challenge is keeping oil around the pickup when the vehicle is accelerating, braking or cornering.
A badly controlled seven-quart oil supply can still uncover the pickup.
What Is a Moroso Air/Oil Separator?
An air/oil separator removes suspended oil droplets from crankcase vapor before that vapor continues through the ventilation system.
Moroso manufactures both:
Closed PCV-style air/oil separators
and
Racing breather/catch tanks
These should not be confused.
A closed separator can be integrated into a street-style PCV system.
A remote racing breather tank may vent to atmosphere and can be intended for:
- Vacuum-pump systems
- Dry-sump systems
- Racing crankcase ventilation
We’ve previously used Moroso air/oil separator technology in performance applications, and you can read our original My Pro Street coverage in Moroso’s Mustang Air/Oil Separator.
Why Does an Engine Need a Catch Can or Oil Separator?
Combustion pressure that escapes past the piston rings creates blow-by.
Those gases enter the crankcase carrying:
- Oil mist
- Fuel vapor
- Moisture
- Combustion byproducts
A PCV system routes crankcase vapor out of the engine.
On many engines, that vapor is returned to the intake.
An effective separator removes a portion of the suspended oil before the vapor reaches the intake tract.
This can help reduce oil accumulation in:
- Intake piping
- Turbocharger inlet piping
- Intercoolers
- Intake manifolds
But a catch can doesn’t repair excessive blow-by caused by worn piston rings or damaged cylinders.
What Is the Difference Between a Catch Can and a Breather Tank?
A catch can or separator used in a closed PCV system usually separates oil while allowing crankcase vapor to continue through the intended ventilation circuit.
A racing breather tank may instead provide a remote atmospheric outlet.
Moroso offers both types.
For example, a remote tank with a large -12AN connection may be intended for a racing vacuum-pump discharge system.
That is very different from a small street PCV separator.
Choose the product according to the crankcase ventilation architecture, not simply according to tank size.
What Does a Moroso Vacuum Pump Do?
An engine-driven racing vacuum pump pulls pressure from the crankcase.
Moroso’s racing vacuum pumps are used in applications where controlled crankcase vacuum can help:
- Manage blow-by
- Improve ring sealing conditions
- Reduce crankcase pressure
- Control oil contamination
- Support racing engine ventilation
The Moroso 22641, for example, is a four-vane racing vacuum pump.
A vacuum pump is not simply a giant replacement for a PCV valve.
It requires an engineered system including:
- Pump
- Brackets
- Drive pulley
- Belt
- Crankcase connections
- Vacuum regulation
- Discharge/breather tank
Too much crankcase vacuum can create its own problems.
Why Does a Vacuum-Pump System Need a Breather Tank?
The pump discharge can carry oil mist.
A remote breather tank gives that discharge somewhere to separate oil before gases vent.
A typical layout is:
Crankcase → Vacuum Pump → Breather Tank → Atmosphere
The breather tank therefore belongs on the pump outlet side.
Installing the wrong type of tank between the engine and pump inlet can change pump operation and should only be done if the system is specifically engineered that way.
What Is the Moroso 85474 Air/Oil Separator?
Moroso 85474 is a large-body universal air/oil separator designed for an inline crankcase ventilation application.
It uses:
- Large separator body
- 3/8-inch NPT inlet and outlet fittings
- Drain
- Mounting hardware
- Hose
This type of product is more appropriate when the objective is to separate oil while maintaining a closed ventilation path.
That makes it fundamentally different from an atmospheric racing breather tank.
Does a Bigger Catch Can Work Better?
Not necessarily.
Internal design matters enormously.
Effective oil separation can depend on:
- Baffling
- Filter media
- Vapor velocity
- Inlet placement
- Outlet placement
- Internal volume
- Temperature
A giant empty aluminum container may separate less oil than a smaller properly baffled separator.
This is why the inside of the catch can matters more than the anodized finish on the outside.
What Does a Moroso Coolant Expansion Tank Do?
Moroso manufactures universal and vehicle-specific coolant tanks.
The Moroso 63766, for example, is a universal 1.25-quart fabricated-aluminum coolant expansion tank.
It incorporates:
- Billet filler neck
- Integrated mounting bracket
- 1/2-inch NPT bottom port
- 3/8-inch NPT side port
- Overflow-hose connection
A pressurized expansion tank can serve as a remote fill point and provide space for coolant expansion.
This can be particularly useful in:
- Engine swaps
- Race cars
- Low-mounted radiator systems
- Remote radiator installations
- Complex turbo cooling systems
Is an Expansion Tank the Same as an Overflow Tank?
No.
A pressurized expansion tank is part of the pressurized cooling circuit and can serve as the system’s fill point.
A coolant recovery tank normally sits outside the primary pressurized circuit and catches coolant discharged through the pressure cap.
A simple overflow catch tank may only capture discharged coolant.
These terms are frequently mixed together in product listings, so determine what the tank actually does before plumbing it.
Where Should a Coolant Expansion Tank Be Mounted?
In many custom cooling systems, a pressurized expansion tank is positioned near the effective high point of the system.
That can help provide a path for trapped air to migrate out of:
- Cylinder heads
- Radiator
- Heater circuit
- Turbocharger coolant lines
- Remote coolant pipes
Mounting a remote fill tank below the highest coolant passages can make bleeding considerably more difficult.
The exact layout depends on the cooling system.
Does a Higher-Pressure Radiator Cap Make an Engine Run Cooler?
Not directly.
A higher-pressure cap raises the coolant’s boiling margin.
It doesn’t fix:
- Poor radiator airflow
- Failed cooling fan
- Bad thermostat
- Weak water pump
- Restricted radiator
- Trapped air
- Incorrect ignition timing
- Lean air/fuel mixture
For example, the Moroso 63324 23–25 lb Racing Radiator Cap is currently available through Pro Street Online.
A higher-pressure cap should only be used when the entire cooling system is rated appropriately.
That includes:
- Radiator
- Expansion tank
- Heater core
- Hoses
- Clamps
- Water-pump seals
- Fittings
Higher pressure increases boiling margin.
It also increases stress.
How Much Pressure Can a Racing Radiator Cap Add?
Moroso offers racing caps across a wide pressure range, from relatively low-pressure applications through caps exceeding 30 psi.
That does not mean the highest-pressure cap is the best one.
Pressure needs to be matched to the cooling system.
Installing a 30-plus-psi cap on a system designed around substantially lower pressure can expose the weakest component very quickly.
Usually with coolant.
Usually somewhere inconvenient.
What Is a Moroso Electric Water-Pump Drive?
The Moroso 63750 is an electric drive system for compatible mechanical water pumps.
It is not itself a complete water pump.
Instead, an electric motor and belt drive the existing mechanical pump independently of engine RPM.
This type of system is primarily aimed at drag-racing applications.
One advantage is the ability to circulate coolant without the engine running between passes.
That can help cool a race engine in the pits.
Is the Moroso 63750 for Street Cars?
Moroso positions the 63750 primarily as a racing component.
It should not automatically be treated as a street replacement for an engine’s normal accessory drive.
A street cooling system needs reliable continuous coolant circulation under:
- Idle
- Traffic
- Highway operation
- Hot weather
- Extended run time
Race-oriented electric pump-drive hardware needs to be selected according to its intended duty cycle.
What Is a Moroso Transmission Pan?
Moroso manufactures fabricated-aluminum transmission pans for numerous automatic transmissions.
Depending on the application, these can use:
- Fabricated aluminum construction
- One-piece billet rails
- CNC-machined sealing surfaces
- Magnetic drain plugs
- Temperature-sensor ports
- Additional fluid capacity
The billet sealing rail is particularly useful because it resists the distortion commonly seen around the bolt holes of thin stamped-steel pans.
What Is a Moroso Perm-Align Transmission Gasket?
Moroso Perm-Align transmission gaskets use rubber vulcanized to a rigid steel frame.
Depending on application, Moroso specifies these gaskets at approximately:
3/16 inch thick
The rigid frame helps:
- Maintain gasket shape
- Keep bolt holes aligned
- Control compression
- Simplify repeated pan removal
Moroso’s Perm-Align transmission gaskets are designed for compatible flat-rail cast-aluminum or billet-rail pans.
They should not automatically be assumed compatible with every stamped or raised-rail pan.
Do Moroso Perm-Align Gaskets Need RTV?
Moroso states that its genuine Perm-Align transmission gaskets do not require sealant.
That’s important.
Adding RTV to a gasket specifically designed for dry installation can create unnecessary mess and potentially introduce pieces of cured sealant into the transmission.
Always follow the instructions for the specific gasket and pan combination.
What Is the Moroso 42001 Powerglide Pan?
The Moroso 42001 is a shallow fabricated-aluminum pan for the GM Powerglide.
It uses a:
- One-piece billet rail
- CNC-machined sealing surface
- Magnetic -8AN drain plug
- 1/4-inch NPT port
The billet rail provides a much more rigid sealing surface than a typical stamped pan.
That makes it a good example of why Moroso pairs its performance pans with appropriately designed gaskets.
What Is the Moroso 42060 Ford C6 Pan?
The Moroso 42060 is a fabricated-aluminum transmission pan for the Ford C6.
It uses a CNC-machined billet rail and works with Moroso’s genuine 93108 Perm-Align gasket.
The combination demonstrates an important principle:
Pan design and gasket design should be considered together.
A premium gasket cannot completely compensate for a badly warped pan.
What Is the Moroso 74098 Multi-Power Battery Terminal?
The Moroso 74098 replaces conventional battery terminals with billet-aluminum positive and negative distribution blocks.
Each block provides five auxiliary ring-terminal locations:
Three 1/4-inch
One 5/16-inch
One 3/8-inch
The terminals fit compatible SAE/JIS tapered battery posts.
This gives builders clean connection points for:
- Starter cables
- Charging cables
- Grounds
- Fuse panels
- EFI systems
- Ignition
- Electric fans
- Fuel pumps
- Other accessories
It’s particularly useful on custom electrical and remote-battery installations.
Is the Moroso 74098 Vehicle-Specific?
No.
Battery-post design determines compatibility.
The 74098 fits compatible SAE/JIS tapered posts.
Moroso also warns that some European batteries use smaller posts that may not fit correctly.
That’s a good example of why the word universal doesn’t mean fits absolutely everything.
Do Additional Battery Connections Need Fuses?
Positive accessory circuits generally need appropriate overcurrent protection.
A distribution terminal gives you additional places to connect circuits.
It doesn’t eliminate the need for:
- Fuses
- Fusible links
- Circuit breakers
The protective device should be sized according to the conductor and circuit requirements.
The battery can deliver enormous current into a short circuit.
Protect the wiring accordingly.
What Is a Moroso Battery Disconnect?
Moroso offers several master battery-disconnect switches for racing and performance applications.
For example, the Moroso 74101 is a heavy-duty manual disconnect rated by Moroso for 175 amps and 6–36 volts DC.
A battery disconnect is different from a distribution terminal.
The distribution block organizes electrical connections.
The disconnect provides a way to isolate the battery from the vehicle electrical system.
Will Disconnecting the Battery Always Shut Off a Running Race Car?
Not necessarily.
If the alternator remains connected to the vehicle electrical system, it may continue supplying power after the battery has been disconnected.
That matters on competition vehicles where a master cutoff is expected to stop the engine.
The electrical system must be designed so the required master switch actually shuts down the vehicle.
Always follow the current rules of the sanctioning body under which the vehicle competes.
What Is a Moroso Sealed Battery Box?
The Moroso 74051 is a sealed battery enclosure intended for compatible rear-battery relocation applications.
It includes provisions for:
- Battery containment
- Hold-down
- Sealing
- External venting
A sealed and vented enclosure can be important when a conventional battery is relocated into an enclosed passenger or luggage area.
Battery relocation also requires careful consideration of:
- Cable size
- Voltage drop
- Grounding
- Circuit protection
- Cable routing
- Master disconnect requirements
Moving the battery is easy.
Moving it correctly is the part that takes planning.
Why Does Battery Cable Size Matter?
Electrical resistance increases with conductor length.
Relocating a battery from the engine compartment to the rear of a vehicle dramatically increases cable length.
An undersized cable can create excessive voltage drop during starter operation.
Symptoms can include:
- Slow cranking
- Starter clicking
- Low voltage
- Hot cables
- Charging problems
The ground return path is equally important.
A giant positive cable combined with a marginal ground cable is not a properly designed electrical system.
What Is the Moroso 62191 Degree Wheel?
The Moroso 62191 is an 18-inch engine degree wheel intended for engine assembly and camshaft measurement.
A degree wheel can be used to establish:
- True top dead center
- Camshaft opening events
- Camshaft closing events
- Intake centerline
- Exhaust centerline
- Actual installed cam position
This is far more accurate than assuming the timing marks on an engine are perfect.
Why Degree a Camshaft?
Manufacturing tolerances can exist in:
- Camshaft
- Timing set
- Crankshaft keyway
- Cam gear
- Block machining
Degreeing verifies where the camshaft actually sits relative to the crankshaft.
That matters when building an engine where valve timing and piston-to-valve clearance are critical.
A camshaft installed “dot to dot” may be close.
Measurement tells you whether it’s actually correct.
Does Moroso Make Crankshaft Tools?
Yes.
Moroso manufactures specialty engine tools for numerous applications.
For example, we’ve used and referenced Moroso Honda crank-pulley holding tools in older My Pro Street technical guides.
Our D16Y8 timing-belt guide references a Moroso crank-pulley tool for removing the stubborn Honda crank bolt.
This is another part of the Moroso catalog that’s easy to overlook because the company is better known for racing oil-system hardware.
What Is a Moroso Crank Trigger?
A crank trigger provides an ignition system with a precise crankshaft-position reference.
Moroso offers flying-magnet crank-trigger systems for racing engines including Chevrolet big-block applications.
A typical crank-trigger system uses:
- Trigger wheel
- Magnetic pickup
- Adjustable sensor bracket
- Ignition electronics
This allows ignition timing to reference the crankshaft directly rather than relying entirely on distributor shaft position.
Does a Crank Trigger Eliminate the Distributor?
Not necessarily.
On a traditional distributor-based racing ignition system, the crank trigger can determine when the ignition event occurs while the distributor still determines where the spark is routed.
Rotor phasing therefore remains important.
A crank trigger and distributor can work together.
What Is a Moroso Timing Pointer?
A timing pointer provides a fixed reference against the harmonic damper’s timing marks.
Moroso offers adjustable billet timing pointers for numerous engine combinations.
For example, the Moroso 60110 is designed for a small-block Chevrolet using a 6.750-inch harmonic damper.
The pointer provides adjustment so the builder can accurately align the reference with true top dead center.
That last part matters.
A beautiful billet pointer is only useful if zero actually means zero.
Why Verify True TDC?
Timing marks can be inaccurate because of:
- Incorrect pointer
- Wrong harmonic damper
- Damper outer-ring movement
- Mismatched components
- Assembly errors
Finding true top dead center with a piston stop and degree wheel gives the engine builder a mechanical reference.
The timing pointer can then be adjusted accordingly.
This is especially important when ignition timing is being tuned near an engine’s detonation limit.
What Is a Moroso Racing Radiator Cap?
Moroso manufactures pressure caps in multiple pressure ranges.
One example currently offered through Pro Street Online is the Moroso 63324 23–25 lb Racing Radiator Cap.
The important number is not the brand name.
It’s the pressure rating.
The cap controls the pressure at which the cooling system can discharge coolant.
That pressure must be appropriate for the complete cooling system.
Can I Install a 30-PSI Radiator Cap on Any Aluminum Radiator?
No.
Radiator material alone doesn’t determine allowable system pressure.
The entire system must tolerate the pressure, including:
- Radiator construction
- Expansion tank
- Heater core
- Hoses
- Clamps
- Fittings
- Water-pump seals
Always verify component ratings.
Higher pressure is not automatically better.
What Is a Moroso Flexible Oil Dipstick?
Moroso offers flexible dipsticks for applications where rigid factory-style dipsticks are difficult to route.
The Moroso 25971 Braided Stainless Steel Oil Dipstick is one example currently surfaced by Pro Street Online.
It uses a flexible braided outer tube and is intended for compatible Moroso oil-pan applications with the appropriate fitting.
Flexible dipsticks can simplify routing around:
- Headers
- Engine-swap mounts
- Accessories
- Custom intake systems
But the dipstick still needs to be calibrated correctly to the oil pan.
Can I Trust a Universal Dipstick’s Marks Automatically?
No.
Whenever an oil-pan or dipstick combination changes, verify the actual oil level.
Oil level should be established according to the engine and pan manufacturer’s capacity procedure.
Then confirm where that level appears on the dipstick.
A dipstick is a measuring tool.
If its reference marks don’t correspond to the actual pan capacity, it’s simply a very polished guessing stick.
Are All Moroso Parts Race-Only?
No.
Moroso manufactures a mixture of:
- Street-performance parts
- Replacement-style performance components
- Universal fabrication parts
- Competition hardware
- Dedicated race-only components
For example, a battery terminal distribution block can be useful on a street restomod.
A drag-racing electric water-pump drive has a much more specialized use.
A closed air/oil separator can work in an appropriate street PCV system.
An atmospheric vacuum-pump breather system may not be appropriate for a pollution-controlled street vehicle.
Read the actual application rather than assuming that every Moroso part belongs in the same category.
Are Moroso Parts Universal?
Some are.
Many are not.
Moroso’s catalog includes:
Vehicle-specific parts
Engine-specific parts
Transmission-specific parts
Universal parts
Plumbing-size-specific parts
For example:
A 63766 expansion tank is universal.
A 42060 transmission pan is Ford C6-specific.
A 60110 timing pointer is application-specific to compatible small-block Chevy/damper combinations.
A 74098 battery terminal is battery-post-specific.
Universal should always be followed by:
“Universal within what requirements?”
How Should I Choose the Right Moroso Part?
Start with the system you’re trying to improve.
Then verify:
- Exact application.
- Dimensions.
- Thread sizes.
- Fitting sizes.
- Pressure requirements.
- Electrical requirements.
- Available clearance.
- Required companion parts.
- Street or competition legality.
- Manufacturer installation instructions.
Do not shop by photograph alone.
Two nearly identical aluminum tanks can perform completely different jobs.
Where Can I Buy Moroso Parts?
You can shop current Moroso performance parts through Pro Street Online, where we’re expanding our catalog of Moroso oiling, cooling, electrical, transmission and racing components.
Current Moroso products surfaced through Pro Street Online include the 23900 3-Quart Oil Accumulator, 63324 23–25 lb Racing Radiator Cap, and 25971 Braided Stainless Steel Oil Dipstick, alongside the growing Moroso catalog.
When selecting parts, search by the Moroso part number whenever possible.
That’s the easiest way to distinguish between similar components with different:
- Thread sizes
- Pressure ratings
- Capacities
- Applications
- Fittings
- Dimensions
The part number matters.
Especially when the alternative is discovering that the beautifully fabricated component on your workbench is almost—but not remotely—correct for your car.
Final Thoughts
Moroso’s catalog covers considerably more than the company’s familiar racing oil pans.
The same manufacturer produces components for:
- Engine oil control
- Oil filtration
- Accumulators
- Crankcase ventilation
- Vacuum systems
- Cooling
- Transmission service
- Battery relocation
- Electrical distribution
- Engine assembly
- Ignition timing
The common thread is that most of these parts work as pieces of a larger system.
A high-volume oil pump needs the correct pan and pickup.
A vacuum pump needs proper crankcase plumbing and regulation.
An expansion tank needs proper positioning and bleeding.
A high-pressure radiator cap needs a cooling system capable of handling the pressure.
A remote battery needs properly sized cables, grounding and circuit protection.
That’s the best way to approach Moroso hardware:
Don’t ask only whether the part fits. Ask how it fits into the complete system.
For current parts and availability, visit Pro Street Online.
