Product Description
Cummins 3000521 O-ring seal for compatible Cummins diesel engines, including select 855, Big Cam, ISB, and QSB configurations. Designed to seal mating engine components and help prevent fluid leakage during operation.
Used in certain rocker shaft assemblies and engine sealing connections. Provides a replacement sealing component during engine maintenance, gasket replacement, or rebuilding.
Cross-references Cummins part numbers 116029, 43463, 3046364, 3058653, and 3910260.
Verify the original part number, installation location, seal dimensions, and engine compatibility before ordering. Sold individually.