Description

Factory-Fit Strength for Your Bottom End

The Polaris Ranger / Sportsman 400 and 500 New Crankshaft replaces worn rotating assemblies with precision manufacturing and quality materials. Built for the 1996-2014 engine platforms, this crankshaft restores smooth operation, balanced rotation, and reliable torque delivery.

• OE-style crankshaft built to deliver accurate journal dimensions and factory fit.
• Correct balance and bearing surfaces help restore smooth engine operation.
• Ideal for rebuilds, performance upgrades, or when your current crank shows signs of wear or damage.

Put Strength Back Into Your Engine

Because the crankshaft is the heart of your engine’s bottom end, replacing it with a high-quality unit early avoids vibration, bearing failure, and loss of performance. As a result, you’ll experience longer life, smoother power delivery, and increased reliability.

Installation & Support

Installation is recommended for experienced mechanics who can ensure correct clearances and torque specs. For help, visit our Help Center, check our FAQ, or Contact Us. Explore rebuild insights in our REV6 Blog or watch step-by-step instructions on our YouTube channel. For full rebuild guidance, consult our Engine Rebuild Kit Guide and review our Warranty Policy.

This Kit Includes

• (1) Crankshaft (with bearings pressed on) REPLACES OEM#: 3089540

Fitment Information

• 2005–2014 Ranger 400 (all models)
• 1996–2013 Sportsman 500 (all models)
• 2012–2017 Ranger 570 (all models)
• 2012–2017 RZR 570 (all models)

Thank you for choosing REV6 — your trusted source for high-performance powersports engines and parts. We proudly support U.S. veterans and servicemembers with exclusive discounts as our way of giving back to those who serve.