Caterpillar 8M-0904 Gasket

Caterpillar 8M-0904 is an oil pump gasket sized 76 mm by 48 mm, designed to seal the interface between the Caterpillar oil pump and its mounting housing on CAT-powered engines. This part is cataloged as 8M0904 and is commonly sold as an aftermarket replacement for genuine Caterpillar gaskets. Supplier listings identify the part explicitly as an oil pump gasket for Caterpillar equipment, confirming its intended use in the engine’s lubrication system. The documented dimensions of 76 mm by 48 mm appear consistently across retailers and parts catalogs, making it a straightforward swap for the original gasket in applicable CAT installations. In practice, technicians replace the 8M0904 gasket to restore oil-tight seals in the oil pump assembly, helping prevent leaks and maintain proper lubrication flow in CAT engines and equipment. Because gasket fit can vary by model, verify compatibility with your Caterpillar engine or equipment using the 8M0904 part number before purchase.