Description
The Polaris Big Boss 500 Complete Engine Rebuild Kit 1998–1999 is built to tackle common wear areas inside the engine all at once, instead of piecemeal fixes. A 1-year REV6 parts warranty backs all components.
Replaces the Following OEM Part #s: 3087221, 3087224, 308996, 3086811, 3086200, 3085074, 3085371, 3085075, 3085655, 3087170, 3085534, 3084890, 3089256, 3090293.
THIS KIT INCLUDES
- STD cylinder
- 90 degree coolant pipe elbow
- Piston kit
- Crankshaft with pressed bearings
- Camshaft
- Intake/exhaust rocker arms
- Complete gasket kit
- Water pump rebuild kit
- Timing chain
- Upgraded tensioner/gasket
PEOPLE ALSO SEARCH
Polaris Big Boss 500 Engine Rebuild Kit 1998–1999
LEARN MORE & GET SUPPORT
Before you begin your rebuild, review our warranty policy. For build insights, visit the REV6 blog. You’ll find answers on our FAQ page, or contact us if you need further help.
FITMENT
Polaris Big Boss 500
1998–1999
TAKE ACTION
Add this complete engine rebuild kit to your cart and take advantage of REV6’s nationwide shipping to get the internal parts your Big Boss 500 needs for a dependable overhaul.
We proudly support our veterans with dedicated discounts.













