WSM 100-125-04SK Piston Kit for Johnson Evinrude 200-225 HP 3.685 Bore Starboard .010 Over

The WSM 100-125-04SK is a high-quality starboard side piston kit designed for Johnson and Evinrude 200-225 HP 6-cylinder loop-charged outboard engines with a 3.685" bore. This kit features a .010" oversize specification for rebuilding engines with slightly worn cylinders.

Key Features:

• Competitively priced forged piston construction for enhanced strength and durability
• MOS2 (molybdenum disulfide) coating for superior performance and heat absorption
• Precision-machined to exact tolerances for optimal fit and reliability
• Includes piston, rings, wrist pin, and bearing assembly
• Designed specifically for starboard (right) side installation
• .010" oversize for rebuilding worn cylinders back to factory specifications

WSM (Western State Manufacturing) is a trusted name in marine engine components, offering OEM-quality replacement parts at competitive prices. This piston kit is manufactured from industry-leading materials using modern equipment to ensure long-lasting reliability and value. Cross-references to OEM part number 436860.

Note: This kit is sold as a single piston for the starboard cylinder. Port side pistons are available separately under part number 100-125-04PK. Proper cylinder boring and honing to .010" oversize is required for correct installation.