Piston

This high-quality replacement piston (SKU: B1SB6725) is designed to restore compression and power in compatible Briggs & Stratton engines. As a direct OEM replacement for part number 391285, it offers a reliable fit and durable performance for lawnmowers and other outdoor power equipment. Ideal for engine rebuilds or repairs, this piston ensures your equipment runs smoothly and efficiently.

• OEM replacement for Briggs & Stratton 391285 – ensures precise fit and reliable operation.
• Durable construction built to withstand high temperatures and engine stress.
• Easy to install as part of a piston ring or complete engine rebuild kit.

• Briggs & Stratton single-cylinder engines (e.g., Series 450, 500, 550)
• Lawnmowers including Murray, MTD, and Snapper models
• Pressure washers and generators using compatible Briggs & Stratton powerheads

Engine Parts – Replacement pistons for small engines used in lawn and garden equipment.