ATV/UTV Engine
ATV/UTV Engine Parts at JJ Motorsports
Maximize your ATV or UTV's engine life with top-quality components from JJ Motorsports. Our selection includes gasket kits, connecting rods, water pump rebuild kits, and timing plugs designed for reliable sealing, strength, and easy installation in demanding off-road conditions. Compatible with Polaris, Can-Am, Honda, and more, these parts ensure peak power, reduced wear, and efficient operation for trail riding or utility work.
Shop trusted brands like Moose Racing for rebuild kits and Winderosa for gaskets. Explore related categories such as ATV/UTV air and fuel for intake upgrades or ATV/UTV drivetrain for transmission enhancements.
Top ATV/UTV Engine Products
- MOOSE UTILITY Clutch Cover Gasket Seal 500-1265-PU – Durable seal for clutch cover protection.
- WINDEROSA Standard Bore Gasket Kit 810585 – Complete kit for engine sealing and rebuilds.
- WORKS CONNECTION Engine Timing Plug 24-590 – Precision plug for accurate timing adjustments.
- MOOSE RACING Connecting Rod MR5026 – High-strength rod for engine durability.
- MOOSE RACING Water Pump Rebuild Kit 821865 – Comprehensive kit for water pump maintenance.
Browse our in-stock inventory below with same-day shipping and expert support. Questions? Contact us for fitment advice!
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- Qty in Cart
- Quantity
- Price
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KIBBLEWHITE Top End Service Kit 82-83250
KIBBLEWHITE
$660.02A complete top-end rebuild demands precision components and quality gasket sealing—compromising on either leaves horsepower on the table and reliability in question. The KIBBLEWHITE 82-83250 kit consolidates every critical component you need into one...09263401- SKU:
- 09263401
- Availability:
- Ships Same Business Day
- Weight:
- 2.68 LBS
$660.02 -
KIBBLEWHITE Top End Service Kit 82-83900
KIBBLEWHITE
$1,150.24A top-end rebuild demands precision components that can handle sustained performance demands without compromise. The KIBBLEWHITE 82-83900 delivers a complete service kit engineered for reliability, combining premium materials with race-proven design to...09263402- SKU:
- 09263402
- Availability:
- Ships Same Business Day
- Weight:
- 4.16 LBS
$1,150.24 -
KIBBLEWHITE Top End Service Kit 82-83950
KIBBLEWHITE
$1,150.24A top-end rebuild is fundamental to restoring engine performance and reliability, and this kit eliminates the guesswork by bundling every critical component you'll need. Whether you're refreshing a tired engine or optimizing a race platform, the...09263403- SKU:
- 09263403
- Availability:
- Ships Same Business Day
- Weight:
- 4.35 LBS
$1,150.24 -
KIBBLEWHITE Spring Kit 82-82012
KIBBLEWHITE
$181.21If you're running forced induction or building a high-RPM engine, stock valve springs won't cut it. The KIBBLEWHITE 82-82012 Spring Kit is engineered to handle the demands of boosted applications, delivering the valvetrain control and durability you need...09263405- SKU:
- 09263405
- Availability:
- Ships Same Business Day
- Weight:
- 0.62 LBS
$181.21 -
KIBBLEWHITE Spring Kit 30-33800
KIBBLEWHITE
$270.89If you're running forced induction or pushing your engine to sustained high RPMs, your factory valve springs are holding you back. The KIBBLEWHITE Spring Kit 30-33800 delivers the spring rates and high-lift compatibility your boosted or turbocharged...09263407- SKU:
- 09263407
- Availability:
- Ships Same Business Day
- Weight:
- 1.08 LBS
$270.89 -
KIBBLEWHITE Valve - Exhaust - Standard 30-33816K
KIBBLEWHITE
$47.83Exhaust valves endure extreme thermal cycling and combustion pressures that demand materials engineered to withstand repeated abuse without degradation. KIBBLEWHITE's White Diamond exhaust valves are precision-forged from premium EV8 Stainless Steel or...09263410- SKU:
- 09263410
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
$47.83 -
KIBBLEWHITE Valve Guide - Intake - Standard 30-33820
KIBBLEWHITE
$24.89Valve guides are critical to maintaining proper valve alignment and sealing in your cylinder head—misalignment or wear leads to loss of compression, oil burning, and catastrophic engine damage. KIBBLEWHITE's Ampco-45 valve guides deliver superior heat...09263412- SKU:
- 09263412
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
$24.89 -
MOOSE OFFROAD Gasket Float Bowl - Suzuki/Yamaha 46-5059
MOOSE OFFROAD
$13.08A compromised float bowl gasket causes fuel leaks, erratic carburetor performance, and potential engine damage—problems that compound quickly in demanding riding conditions. This MOOSE OFFROAD gasket delivers OEM-equivalent sealing without the dealership...09347216- SKU:
- 09347216
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
$13.08 -
MOOSE OFFROAD Differential Seal Kit - Polaris - Rear 25-2088-5
MOOSE OFFROAD
$26.95A worn differential seal kit compromises both performance and longevity, leading to fluid leakage and potential drivetrain damage. The MOOSE OFFROAD Differential Seal Kit for Polaris rear differentials delivers complete sealing integrity with...09351203- SKU:
- 09351203
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
$26.95 -
MOOSE OFFROAD Differential Seal Kit - Polaris - Rear 25-2112-5
MOOSE OFFROAD
$66.95Differential seals are a critical maintenance item that directly impact your Polaris's reliability and longevity in demanding off-road conditions. When factory seals begin to degrade, gear oil leakage can compromise differential performance and lead to...09351204- SKU:
- 09351204
- Availability:
- Ships Same Business Day
- Weight:
- 0.46 LBS
$66.95 -
MOOSE OFFROAD Differential Seal Kit - Can-Am - Rear 25-2140-5
MOOSE OFFROAD
$28.95Differential seals are critical wear items that directly impact drivetrain reliability and fluid retention—especially in Can-Am rear differentials subjected to high speeds and demanding terrain. Factory seals degrade over time, leading to fluid leakage,...09351207- SKU:
- 09351207
- Availability:
- Ships Same Business Day
- Weight:
- 0.36 LBS
$28.95 -
MOOSE OFFROAD Water Pump Rebuild Kit - Arctic Cat/Yamaha 721317MSE
MOOSE OFFROAD
$55.05A failing water pump can quickly sideline your Arctic Cat or Yamaha sled, leaving you stranded in conditions where reliability is non-negotiable. Rather than sourcing individual seals and gaskets, this complete rebuild kit consolidates every component...09347217- SKU:
- 09347217
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$55.05 -
MOOSE OFFROAD Water Pump Rebuild Kit - Can-Am 721322MSE
MOOSE OFFROAD
$57.13A failing water pump can strand you mid-ride and cause catastrophic engine damage. This MOOSE OFFROAD rebuild kit gives you everything needed to restore your Can-Am's cooling system to factory specifications without the downtime and expense of replacing...09347218- SKU:
- 09347218
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$57.13 -
MOOSE OFFROAD Water Pump Rebuild Kit - Arctic Cat 821928MSE
MOOSE OFFROAD
$115.08A failing water pump compromises your Arctic Cat's cooling system, risking catastrophic engine damage and costly downtime. This MOOSE OFFROAD rebuild kit gives you everything needed to restore your pump to factory specifications without replacing the...09347219- SKU:
- 09347219
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
$115.08 -
MOOSE OFFROAD Exhaust Gasket Kit - Yamaha 823028MSE
MOOSE OFFROAD
$18.96A failed exhaust gasket is one of the quickest ways to lose power, introduce unwanted air leaks, and create persistent exhaust noise. The MOOSE OFFROAD Exhaust Gasket Kit gives you all the critical sealing components needed to restore a tight, efficient...09347220- SKU:
- 09347220
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
$18.96 -
MOOSE OFFROAD Exhaust Gasket Kit - Honda 823136MSE
MOOSE OFFROAD
$9.68A worn or damaged exhaust gasket compromises seal integrity, leading to exhaust leaks, performance loss, and potential engine damage. The MOOSE OFFROAD Exhaust Gasket Kit provides OEM-quality replacement gaskets and springs engineered to restore a proper...09347221- SKU:
- 09347221
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
$9.68 -
MOOSE OFFROAD Exhaust Gasket Kit - Polaris 823182MSE
MOOSE OFFROAD
$29.23Exhaust gasket failures lead to performance loss, increased emissions, and costly engine damage—often without warning. This MOOSE OFFROAD kit provides OEM-quality replacement gaskets and springs specifically engineered for Polaris applications, restoring...09347222- SKU:
- 09347222
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
$29.23 -
MOOSE OFFROAD Water Pump Seal - Polaris 503008MSE
MOOSE OFFROAD
$44.18A failing water pump seal is a silent killer in off-road engines—once it starts leaking, coolant loss and overheating follow quickly. The MOOSE OFFROAD Water Pump Seal for Polaris ensures a reliable, leak-free seal that maintains proper cooling system...09351208- SKU:
- 09351208
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
$44.18 -
MOOSE OFFROAD Water Pump Seal - Can-Am 503010MSE
MOOSE OFFROAD
$34.19A failing water pump seal compromises your entire cooling system, risking catastrophic engine damage and downtime. The MOOSE OFFROAD Water Pump Seal delivers OEM-equivalent reliability with high-quality mechanical construction, ensuring consistent...09351209- SKU:
- 09351209
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
$34.19 -
VINTCO Main Bearing and Seal Kit - Honda KMB033
VINTCO
$54.95A quality main bearing and seal kit is fundamental to long-term engine reliability, especially when you're rebuilding or servicing a high-performance Honda. Installing premium OEM-grade bearings ensures proper crankshaft clearances, reduces friction...09240680- SKU:
- 09240680
- Availability:
- Ships Same Business Day
- Weight:
- 1.46 LBS
$54.95
