Application of Rocker Cover Gaskets 998-397 The rocker cover gasket 998-397 is used to effectively seal the rocker arm cover on an internal combustion engine, preventing oil leaks and maintaining proper engine function. This gasket is designed to fit perfectly into the area between the rocker arm cover and the engine block, creating a tight seal that prevents oil from leaking out onto the engine or ground. The gasket is typically made out of a high-quality material that is able to withstand high temperatures and pressures, ensuring long-lasting use and reliable performance. It is a crucial component in maintaining the proper function of the engine and ensuring a long lifespan for the vehicle.   Part Number:998-397 Part Type:Valve Cover/Rocker Gaskets Brand:FG Wilson Attributes(H/W/L)cm:1.00/13.00/11.00 OEM Alternative Part Number:Perkins 111996401 Compatibility:Perkins 403D 404D 403C 404C 404D-22 404C-22   998-397 Picture show