Wrist Pin Bearing for Polaris Indy Sport Touring 440 1999 Snowmobile

Wrist Pin Bearing for Polaris Indy Sport Touring 440

This wrist pin bearing is a replacement connecting rod small end bearing made for the Polaris Indy Sport Touring 440 snowmobile engine, a direct-fit component that supports the piston pin and keeps the rod-to-piston joint running true.

Overview

This wrist pin bearing is built for the Polaris Indy Sport Touring 440 engine and serves as the bearing between the connecting rod small end and the piston pin. As a wrist pin bearing for Polaris 440 snowmobiles, it restores the rotating surface that carries the piston pin under load. Riders and mechanics rebuilding a worn 440 top end will find this wrist pin bearing a practical replacement option for their service work.

Built For Performance

• Roller bearing design sized for the piston pin journal on the Polaris 440 engine
• Steel rollers and hardened cage for consistent load distribution at high rpm
• Carries the wrist pin so the connecting rod small end does not wear into the piston
• Replacement specification intended for top end rebuild and refresh work
• Compact size that installs in the connecting rod small end bore

Fits These Machines

• for Polaris Indy Sport Touring 440, 1999

On-The-Job Use

• Top end rebuilds on Polaris 440 fan-cooled snowmobile engines
• Replacing a worn or noisy wrist pin bearing during piston service
• Routine freshening of higher-hour trail and touring sleds
• Shop and home garage engine repair work

Specs At A Glance

Good To Know

Q: Should the wrist pin bearing be replaced during a top end rebuild? A: Yes, the wrist pin bearing is normally replaced whenever the piston and rings are serviced, since a worn bearing can add noise and damage the rod small end. Pairing it with the new piston keeps the assembly running as intended.

Q: Does this bearing fit every Polaris 440 engine? A: This bearing is listed for the Polaris Indy Sport Touring 440 in the model year shown in the title. Verify your machine's year, model, and engine before ordering, since fit can vary by build.

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