Briggs & Stratton 806039S Rocker Cover Gasket Replaces 806039/805028 Briggs &amp; Stratton 806039S Genuine Briggs &amp; Stratton Rocker Cover Gasket Used on most 12.5-20 Gross HP Vanguard V-Twin Horizontal &amp; Vertical Briggs &amp; Stratton engines Replaces Old Briggs # 806039, 805028