840.99656MA, Rear Main Crankshaft Seal, Compatible with Caterpillar C15

The 840.99656MA Rear Main Crankshaft Seal is a premium sealing component designed for Caterpillar C15 diesel engines. This seal is installed at the rear of the crankshaft to prevent engine oil from leaking where the crankshaft exits the engine block, ensuring proper lubrication and protecting critical engine components.

Manufactured with high-quality materials, the 840.99656MA seal is built to withstand extreme temperatures, high rotational speeds, and heavy-duty operating conditions commonly found in trucking and industrial applications.

Engineered to meet or exceed OEM specifications, this rear main seal provides reliable fitment, long service life, and leak-free performance, helping reduce downtime and maintenance costs.