Wrist Pin Bearing for Polaris Indy 340 1999-2004 Snowmobile

Wrist Pin Bearing for Polaris Indy 340

This wrist pin bearing is a replacement small end connecting rod bearing that supports the wrist pin inside the piston of Polaris Indy 340 snowmobile engines from 1999 through 2004.

Overview

This wrist pin bearing fits Polaris Indy 340 models built between 1999 and 2004 and serves as the bearing between the wrist pin and the connecting rod small end. It allows the piston pin to rotate smoothly under the cycling loads of a two stroke engine. Anyone rebuilding the top end of an Indy 340 will need this wrist pin bearing on hand.

Built For Performance

• Roller bearing design for the connecting rod small end
• Built to withstand the load cycles of a two stroke snowmobile engine
• Hardened steel rollers held in an aligned cage
• Direct replacement for the worn bearing during top end service
• Sized to fit the wrist pin bore of the Indy 340 piston

Fits These Machines

• for Polaris Indy 340, 1999
• for Polaris Indy 340, 2000
• for Polaris Indy 340, 2001
• for Polaris Indy 340, 2002
• for Polaris Indy 340, 2003
• for Polaris Indy 340, 2004

On-The-Job Use

• Top end rebuilds on 1999 to 2004 Indy 340 engines
• Piston and ring replacement service
• Seasonal engine refresh and inspection
• Connecting rod and crankcase service work

Specs At A Glance

Good To Know

Q: What causes a wrist pin bearing to fail? A: Lack of lubrication, high hours, or metal debris in the engine are common causes. Once play or noise develops at the small end, the bearing should be replaced before it damages the rod.

Q: Can I reuse the old wrist pin with this bearing? A: Reusing a wrist pin is possible if it shows no scoring or wear, but most builders replace the pin and bearing together for reliability. Inspect both parts carefully before assembly.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.