Pressure Regulating Piston 420256518 by Can-Am

Genuine Can-Am Pressure Regulating Piston — OEM Part #420256518

When you are inside the engine, there is no room for guesswork. The genuine Can-Am Pressure Regulating Piston is built to the exact tolerances of the original part in your Maverick Turbo or Maverick X3, so it fits the mating parts correctly and keeps the Rotax engine running the way BRP designed it.

Engine internals and castings work under heat, pressure and constant vibration. A part that is even slightly off can cause oil leaks, low compression, noise or major engine damage. This part is confirmed for 43 Can-Am models from 2017 to 2023. See the full fitment list below.

Pressure Regulating Piston at a Glance

• OEM part number: 420256518
• Brand: Can-Am by BRP (genuine factory part)
• Part type: Pistons & Components
• Fits: Maverick sport side-by-side models, 2017–2023
• Condition: New

Can-Am Models and Years This Pressure Regulating Piston Fits

Genuine Can-Am part #420256518 fits the models and years below. To be certain, match the part number to the factory parts diagram for your machine or contact us with your VIN before ordering.

This part is shared across 43 Can-Am model variants, so the table below groups them by model family. Your exact trim is listed in the parts diagrams linked further down.

Can-Am Maverick sport side-by-side Fitment

Why Choose a Genuine Can-Am OEM Pressure Regulating Piston?

• Factory tolerances for correct clearances and fit
• Designed to work with the other OEM parts in the Rotax engine
• Helps protect any applicable BRP warranty coverage
• Lowers the risk of a repeat teardown from a poor-fitting part
• Sold by Witchdoctors, with factory part numbers and parts diagrams for every Can-Am model we support

Features and Materials

Key Features

• Genuine Can-Am OEM engine part, part #420256518
• Machined to BRP's original specifications
• Matches factory sealing surfaces and mounting points
• Made for the heat and loads of the listed engines
• Pairs with the gaskets and seals on the same parts diagram

Materials and Construction

Rotax engine parts use materials chosen for their location: aluminum alloy castings for cases, cylinders and covers; hardened, heat-treated steel for shafts, gears and valvetrain parts; and multi-layer or composite gaskets with elastomer oil seals.

Common Reasons Riders Replace This Part

• Full or partial engine rebuilds
• Repairs after overheating or oil starvation
• Fixing oil leaks at cases, covers and seals
• Restoring compression and power on a high-hour engine

Signs Your Pressure Regulating Piston Needs Replacing

• Oil leaks around covers, cases or seals
• Ticking, knocking or rattling from the engine
• Low compression or noticeable power loss
• Blue or white smoke, or high oil use
• Metal debris in the oil or on the drain plug magnet

Installation Tips

1. Follow the BRP service manual for your model; engine work needs exact procedures and torque specs.
2. Clean all mating surfaces and replace any gaskets and seals you disturb.
3. Measure critical clearances with proper tools before final assembly.
4. Lubricate moving parts with clean engine oil or assembly lube as specified.
5. Torque fasteners in sequence, refill fluids and check for leaks.

Not sure whether to tackle it yourself? Read when to seek professional help or DIY before you start.

Can-Am Parts Diagrams for Your Machine

Find part #420256518 and every part installed with it in the factory Can-Am parts diagrams for your model:

• 2023 Can-Am Maverick MAX Turbo DS parts diagrams
• 2023 Can-Am Maverick MAX Turbo RR DS parts diagrams
• 2023 Can-Am Maverick MAX Turbo RR RS parts diagrams
• 2023 Can-Am Maverick MAX Turbo RR X ds parts diagrams

Related OEM Parts for the Same Machines

Doing the job right? These genuine Can-Am parts fit the same models and are often replaced at the same time:

• Can-Am Cable Clamp 150mm (#420951650)
• Can-Am Camshaft Chain (#420297086)
• Can-Am Exhaust Camshaft (#420820216)
• Can-Am Intake Camshaft (#420820204)
• Can-Am Camshaft Housing (#420911475)
• Can-Am Camshaft Sensor (#420664049)

Recommended Accessories and Maintenance Supplies

Pair your Pressure Regulating Piston with these parts and supplies:

• Engine rebuild kits — Rebuild kits for UTV and ATV engines
• Engine gaskets and seals — Gaskets and seals for leak-free rebuilds
• Oil change kits — Oil change kits for after your rebuild
• Engine oil — Powersports oil for break-in and beyond
• Can-Am OEM parts diagrams — find every factory part for your model

Helpful Guides from the Witchdoctors Blog

• Stop UTV Gasket Leaks: Expert Installation Guide
• UTV Valvetrain Noise: Symptoms & How to Fix Ticking
• How to Check UTV/ATV Engine Compression
• Can-Am OEM vs. Aftermarket Parts: Which Is Better?

Frequently Asked Questions

What is the OEM part number for this Can-Am Pressure Regulating Piston?

The genuine Can-Am part number is 420256518. Use it to match this part to your factory parts diagram.

Which Can-Am models does part #420256518 fit?

It fits 43 Can-Am Maverick models from 2017 to 2023. The complete list is in the fitment tables above.

Is this a genuine Can-Am part?

Yes. This is a genuine Can-Am OEM part from BRP, the same part number used at the factory, not an aftermarket copy.

Should I replace gaskets and seals at the same time?

Yes. Replace any gasket or seal you disturb. They are on the same Can-Am parts diagram.

Is OEM worth it over aftermarket engine parts?

For internals, OEM parts match the exact clearances the Rotax engine was designed around, which helps avoid noise, wear and leaks.

Can I do this repair myself?

Experienced home mechanics can do many engine repairs with the service manual and the right tools. Precision internal work is best left to a qualified technician if you are not set up for it.

Order Your Genuine Can-Am Pressure Regulating Piston Today

Get your Maverick Turbo or Maverick X3 back to factory condition. Add the genuine Can-Am Pressure Regulating Piston (part #420256518) to your cart today, and order the related parts above at the same time so you can finish the job in one go.

• How long will it take to receive my order?
• Shipping and return policy
• Questions about fitment? Contact us
• Shop all Can-Am OEM parts

Where to Ride Your Can-Am

Ready to put your machine to work? These off-road parks welcome both ATVs and UTVs. Check each park's current rules, vehicle-width limits and permit requirements before you go.

• Georgia Offroad Adventures — Union Point, Georgia: about 150 miles of signed trails
• Byrd's Adventure Center — Ozark, Arkansas: about 30 miles of marked loop trails