Diesel Valve Cover Gasket Kit. One Diesel Valve Cover Gasket Kits w/ Fuel Injector Harness. Direct Injection; Has Female Connectors For Fuel Injector. Prevent leaks from forming between the valve cover and the engine cylinder head with Dorman's Engine Valve Cover Gasket. The gasket is constructed from high- quality materials for durability against extreme under hood temperatures. A long-lasting, airtight seal is ensured.