Piston Assembly - Briggs & Stratton 391673 - STD Size

This genuine Piston Assembly (SKU: B1SB6722) is a direct replacement for Briggs & Stratton engines requiring OEM part 391673 in standard size. Manufactured to exacting tolerances, this high-quality piston ensures reliable compression and smooth operation for a range of outdoor power equipment. Ideal for servicing or rebuilding small engines, it offers a durable, long-lasting solution for your repair needs.

• Genuine Briggs & Stratton specification for a perfect fit and reliable performance.
• Standard size (STD) piston assembly, ready for installation without oversize machining.
• Engineered for durability and consistent compression in demanding applications.

• Briggs & Stratton single-cylinder engines (e.g., 10-20 HP range)
• Lawn mowers and ride-on mowers with compatible B&S engines
• Generators and pressure washers using B&S 391673 series pistons

Small Engine Parts – Piston Assemblies. This category covers critical internal engine components for servicing and rebuilding small engines used in lawn and garden equipment.