This Valve Cover Gasket is a premium aftermarket replacement for Briggs & Stratton part numbers 806039S, 806039, and 805028. It is specially designed for Vanguard V-Twin 12.5–20 HP horizontal and vertical shaft engines and is compatible with multiple equipment brands, including Toro, Simplicity, and Generac.
Common compatible engine series include 290400–294700, 303400–303700, and 350400–351700. It also fits popular Toro lawn mower models such as 02000, 04352, 07273, 07277, and 08886 within specified serial number ranges.
Made from durable gasket material, this part ensures a tight, leak-free seal between the rocker cover and cylinder head, preventing oil seepage and helping maintain proper lubrication. Each V-Twin engine requires two gaskets, one for each cylinder head.
Whether you're performing routine maintenance or repairing an oil leak, this gasket offers a cost-effective and reliable solution to keep your engine running smoothly.