420832440 Wrist Pin Bearing for Polaris SL 1050 1997

Wrist Pin Bearing for Polaris

This wrist pin bearing is an engine connecting rod component that supports the wrist pin where the piston joins the rod, and it is referenced under part number 420832440 for Polaris applications.

Overview

This wrist pin bearing is a small engine component that fits between the wrist pin and the connecting rod small end. It allows the pin to rotate smoothly under load inside the piston assembly. It is intended for riders and mechanics servicing a Polaris SL 1050 watercraft.

Built For Performance

• Roller bearing design that reduces friction at the wrist pin joint
• Fits between the wrist pin and connecting rod small end
• Referenced under part number 420832440
• Suited to small bore two-stroke engine assembly
• Compact size for watercraft engine service
• Serviceable wear item for top end rebuilds

Fits These Machines

• for Polaris SL 1050, 1997

On-The-Job Use

• Top end rebuilds on Polaris watercraft engines
• Wrist pin and piston replacement jobs
• Connecting rod service
• Routine engine refresh during off season

Specs At A Glance

Good To Know

Q: What does a wrist pin bearing do in an engine? A: It sits between the wrist pin and the connecting rod small end, letting the pin rotate smoothly as the piston travels. A worn bearing can cause noise, play, or piston damage, so it is normally replaced during a top end rebuild.

Q: Should the wrist pin bearing be replaced with the piston? A: Yes, this bearing is a wear item and is commonly refreshed together with the piston, wrist pin, and rings during a top end rebuild. Replacing it at the same time helps avoid a repeat teardown if a reused bearing fails.

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