Piston Wrist Pin for 1987-1992 Yamaha 500 Wave Runner - 19.90mm

The Wiseco S478 Piston Wrist Pin is a high-quality replacement gudgeon/wrist pin designed for use with compatible Wiseco and OEM piston applications. Manufactured for strength while keeping reciprocating weight low, it provides a reliable connection between the piston and connecting rod in demanding engine applications.

Precision manufactured to tight tolerances, the S478 is suitable for both 2-stroke and 4-stroke engines where the specified 19.90mm pin diameter is required.

Features:

• Genuine Wiseco piston wrist pin

• Wiseco Part Number: S478

• Outside Diameter: 19.90mm

• Inside Diameter: 13.00mm

• Length: 59.89mm (2.358")

• Unchromed finish

• Strong, lightweight construction

• Precision manufactured for accurate fitment

• Suitable for compatible Wiseco and OEM piston applications

• Suitable for 2-stroke and 4-stroke applications

Important: Always confirm piston and engine compatibility before ordering. Wrist pin dimensions should be checked against the existing piston assembly or manufacturer specifications.