
Quad bike, ATV & UTV engine parts
Find oil filters and oils for servicing, or pistons, crankshafts, bearings and gaskets for engine repairs. Choose a category below, then narrow the range by model and year. For internal engine parts, also check the engine's current specification, including any previous rebuild or modification.
Read the engine buying guide and FAQsBrowse engine 16 categories


Replacement Valve Shims

Replacement Valve Shims

Replacement Valve Shims

Replacement Valve Shims

Replacement Valve Shims

Replacement Valve Shims

Replacement Valve Shims

Value Guide Seals Polaris OUTLAW 500 PREDATOR 500 2X4 TRIUMPH BONNEVILLE 750 T140 BONNEVILLE 750 T140D BONNEVILLE 750 T140E BONNEVILLE 750 T140ES BONNEVILLE 750 T140V HURRICANE 750 TRX75 THUNDERBIRD THUNDERBIRD 650 TR65 Yamaha YFM YXR & More

Replacement Valve Yamaha WR 450 F YFZ YZ 450 F

Black Diamond™ Engine Valve IN Kawasaki KFX 450 R 2x4 2008-2014

Replacement Valve ARCTIC CAT (TEXTRON) 400 2X4 Kawasaki KFX KLX 400 R KLX 400 SR Suzuki DR-Z 400 DR-Z 400 E DR-Z 400 S DR-Z 400 SM LT-Z

Replacement Valve BETA RR 400 RR 450 RR 525 KTM EXC 400 RACING EXC 450 EXC 450 RACING EXC 520 RACING EXC 525 RACING Polaris OUTLAW 450 MXR OUTLAW 450 S OUTLAW 525 IRS OUTLAW 525 S & More

Replacement Valve BETA RR 400 RR 450 RR 525 KTM EXC 400 RACING EXC 450 EXC 450 RACING EXC 520 RACING EXC 525 RACING Polaris OUTLAW 450 MXR OUTLAW 450 S OUTLAW 525 IRS OUTLAW 525 S & More

Replacement Valve Suzuki LT-R 450 2X4 Quadracer 2006-2009

Replacement Valve Suzuki LT-R 450 2X4 Quadracer 2006-2009

Replacement Valve Polaris Ranger Ranger RZR Sportsman

Replacement Valve Polaris Ranger Ranger RZR Sportsman

Replacement Valve Polaris Ranger Ranger RZR Sportsman

Replacement Valve Polaris GENERAL 1000 GENERAL 1000 4X4 GENERAL 4 1000 GENERAL 4 1000 4X4 RZR Ranger Ranger RZR Sportsman

Replacement Valve Polaris ATP 500 HO 4X4 BIG BOSS 500 6X6 HAWKEYE 400 HO 2x4 MAGNUM 425 2X4 MAGNUM 425 6X6 MAGNUM 500 4X4 Ranger SCRAMBLER 500 2X4 SCRAMBLER 500 4X4 Sportsman WORKER 500 4X4 XPEDITION 425 & More

Replacement Valve Polaris SCRAMBLER 850 4X4 SCRAMBLER XP 850 HO 4X4 Sportsman

Replacement Valve Polaris ACE 900 XC 4X4 GENERAL 1000 GENERAL 1000 4X4 GENERAL 4 1000 GENERAL 4 1000 4X4 RZR Ranger Ranger RZR Sportsman

Replacement Valve Polaris SCRAMBLER 850 4X4 SCRAMBLER XP 850 HO 4X4 Sportsman
Choose parts for the job
For an oil service, start with oil filters and oils. Match the filter to your engine and use the oil specification in its service manual. Air filters sit separately under air intake and filters.
For piston or cylinder work, browse pistons and rings and cylinders and parts. For work around the crankshaft and connecting rod, use crankshafts and connecting rods and engine bearings. Valves and cams has its own category for valve-train components.
For sealing or cooling work, start with gaskets and seals, cooling or oil and water pumps. Choose the part for the location being repaired; an engine gasket, oil seal and pump repair kit serve different jobs.
Match the engine as well as the vehicle
Have the full model, year and engine capacity to hand, along with the existing part number where you can identify it. Read the application notes for the exact variant. If the engine has been replaced or modified, the vehicle's original details may no longer identify the parts it needs.
Does an engine rebuild kit include everything I need?
Use engine rebuild kits to compare kit options, then check the contents for the exact reference. The word “rebuild” does not establish which pistons, bearings, gaskets or seals are included. Compare the supplied-parts list with the work planned before ordering additional components.
Can I choose a piston using model and year alone?
Model and year help you find the application, but the piston size must also match the cylinder. Where size grades or oversizes are offered, confirm the cylinder's condition and measurements with your engine builder before ordering. Do not choose a size from engine capacity or appearance alone.
Will the vehicle filter confirm every engine part fits?
It narrows the range using supplier-listed applications. You still need to check the full model, year, variant and any application notes. For a rebuilt or modified engine, compare the part with the specification actually fitted; the filter cannot establish that from the vehicle name.
Where are clutch, fuel and ignition parts?
Browse Drive for clutches and drive belts, Air & Fuel for carburettor and intake parts, or Electrical for ignition and starting electrics. Recoil starters remain in the Engine browse list above.
Compare the complete model, year and part number before choosing a part.