420832440 Wrist Pin Bearing for Sea-Doo

Wrist Pin Bearing 420832440

This wrist pin bearing 420832440 is a small-diameter needle bearing that sits between the connecting rod and the piston pin, letting the piston pivot smoothly as the rod swings.

Overview

The wrist pin bearing 420832440 is a caged needle bearing that supports the piston pin inside the connecting rod small end. This wrist pin bearing handles the reciprocating load where the rod meets the piston, keeping the joint free to rotate. It suits engine builders and riders rebuilding the top end of 1630-based powertrains.

Built For Performance

• Caged needle roller layout for high radial load capacity in a compact space
• Hardened steel rollers and cage to resist wear at high reciprocation speeds
• Precision bore sized to match the piston pin and rod small end
• Protected by retained rollers to simplify assembly on the bench
• Cross-references part number 420832440 for direct replacement

On-The-Job Use

• Top-end rebuilds and piston replacements
• Connecting rod small-end service
• Engine refresh work on 1630-based machines
• Bench assembly of piston, pin, and rod sets

Specs At A Glance

Good To Know

Q: Is this wrist pin bearing an original factory part? A: It is an aftermarket replacement referenced by part number 420832440 and is not manufactured by the brand it fits. Check the number against your engine parts diagram before ordering.

Q: How many wrist pin bearings does one piston use? A: Most single-piston assemblies use one wrist pin bearing at the rod small end. Replace it whenever the piston or rod is serviced.

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