Description

Strength You Can Count On

The Polaris 400 Crankshaft & Bearing Kit is engineered for reliability and performance. Designed for 1994–2014 Polaris 400 engines, it replaces worn rotating components with upgraded forged materials that deliver smoother power and long-lasting balance.

• Complete rebuilt crankshaft with precision-ground journals and balanced rotation.
• Chromoly connecting rod and crank pin for maximum strength under load.
• Premium main bearings and seal kit to restore compression and oil pressure.
• Ideal for rebuilds, refreshes, or preventative maintenance on aging 400 engines.

Built to Outlast Stock

Because factory crank components can fatigue over time, this upgraded assembly provides better lubrication and heat resistance. As a result, you’ll get a more stable bottom end, longer service life, and consistent torque you can trust.

Installation & Support

Professional installation is recommended for proper clearance and torque specifications. For help, visit our Help Center, review the FAQ, or Contact Us. You can also explore rebuild articles on the REV6 Blog, watch repair videos on YouTube, or view our Warranty Policy. For rebuild guidance, check our Engine Rebuild Kit Guide.

This Kit Includes

• (1) Crankshaft REPLACES OEM#: 3089540
• (3) Main Crankshaft Bearings REPLACES OEM#: 3085815
• (1) Crankshaft Seal Kit

Technical Specifications

• Forged chromoly connecting rod
• Chromoly crank pin
• Chromoly needle bearings with silver coating for improved lubricity and heat resistance

Fitment Information

• All Polaris Sportsman 500 Engines (1996–2013)
• All Polaris Ranger 500 (Fuji) Models

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