Stens # 465-054 Head Gasket for BRIGGS & STRATTON 272163, BRIGGS & STRATTON 270430, BRIGGS & STRATTON 4121, BRIGGS & STRATTON 272163SBRIGGS & STRATTON 272163, BRIGGS & STRATTON 270430, BRIGGS & STRATTON 4121, BRIGGS & STRATTON 272163S Sold on Amazon