Cummins M11 Camshaft & Related Components

The camshaft system inside a Cummins M11 engine is one of the most critical assemblies for proper valve timing, fuel injection, and overall engine performance. A precisely maintained camshaft ensures the engine runs smoothly, maintains efficient combustion, and delivers the durability that operators rely on. Whether you are carrying out a top-end rebuild or simply replacing worn bushings and gaskets, choosing the right camshaft parts for your Cummins M11 is essential.

At Diesel Pro Power, trusted by 40,000+ satisfied customers worldwide, we provide a complete range of camshaft components for the Cummins M11—including bushings, seals, gaskets, and cover plates—engineered to OEM specifications for long-lasting reliability in both marine and industrial applications.

Camshaft Bushings for Cummins M11

Driver Support Bushings

The camshaft in the Cummins M11 is supported by a series of bushings that allow the shaft to rotate smoothly within the engine block. These driver support bushings reduce friction, minimize wear on the camshaft journals, and help maintain precise valve timing.

Bushings wear naturally over time due to high rotational speeds and the continuous pressure of the valve train. Replacing them at scheduled service intervals prevents camshaft scoring, reduces engine noise, and extends the life of the entire top-end assembly.

Our replacement driver support bushings are manufactured from high-strength alloys designed to handle extreme loads and temperatures. They are also compatible with related Cummins platforms such as the L10, ISM, and QSM, ensuring parts commonality across multiple applications.

Complete Camshaft Bushing Sets

For operators performing a complete rebuild or overhaul of a Cummins M11 engine, a full camshaft bushing set is the most reliable option. A complete set ensures that every camshaft journal is properly supported, providing consistent lubrication and alignment throughout the shaft’s rotation.

Camshaft bushing sets for the M11 include all bushings needed for a full installation, making them an ideal choice for maintenance shops, fleet operators, and marine engineers who want to eliminate the risk of uneven wear or partial repairs.

Gaskets and Seals for the Camshaft Housing

Rocker Cover Housing Gaskets

The rocker cover housing gasket is designed to seal the interface between the rocker housing and the cylinder head. On the Cummins M11, this gasket plays a vital role in preventing oil leaks and maintaining the correct oil pressure inside the valve train assembly.

A failed rocker cover gasket can lead to oil seepage, reduced lubrication, and even contamination of other engine components. Diesel Pro Power offers premium rocker cover housing gaskets for the M11, providing a perfect fit and long service life under high-temperature conditions.

Front Cover Seal Rings

The front cover seal ring prevents oil from leaking at the front of the camshaft and timing gear assembly. This is a small but essential component that protects against oil loss, contamination, and eventual damage to the camshaft bearings.

Replacing the front cover seal ring during a camshaft service or overhaul ensures that the M11 maintains proper lubrication and remains free from dirt and debris entering through exposed surfaces.

Rectangular Ring Seals

The rectangular ring seal is another precision sealing component within the camshaft housing. On the Cummins M11, it provides leak-proof sealing in areas exposed to both oil and combustion gases.

Over time, rectangular seals harden or crack due to exposure to heat and vibration. Replacing them during scheduled maintenance prevents oil seepage and contributes to the long-term reliability of the camshaft assembly.

Rear and Gear Cover Plate Gaskets

Rear Cover Plate Gaskets

The rear cover plate gasket provides a critical seal at the back of the camshaft assembly. When this gasket deteriorates, operators often notice oil leakage at the rear of the engine, which can spread to other components and cause contamination.

A new rear cover plate gasket ensures that the Cummins M11 remains properly sealed, protecting both the camshaft and the crankcase from oil loss.

Gear Cover Plate Gaskets

The gear cover plate gasket seals the area around the camshaft gears and timing components. In an M11 engine, this gasket prevents oil leakage around the timing case while withstanding the stress of rotating gears.

Because timing gears and the camshaft are under constant load, the gasket must be replaced whenever the cover is removed for inspection or service. Diesel Pro Power supplies durable gear cover plate gaskets designed to meet OEM specifications, ensuring the engine’s timing system stays properly sealed.

Why Choose Diesel Pro Power for Cummins M11 Camshaft Parts?

• OEM-Quality Components: Every camshaft bushing, seal, and gasket is built to factory specifications.

• Global Customer Base: Trusted by over 40,000+ satisfied customers worldwide.

• Fast Shipping: All camshaft components for Cummins M11 are stocked and ready for immediate dispatch.

• Marine & Industrial Expertise: Whether you’re servicing an M11 in a commercial vessel or in an industrial application, we provide the right parts to keep your engine running reliably.

• Comprehensive Catalog: From camshaft bushings to complete sealing kits, our catalog covers everything you need for an efficient repair or rebuild.

Best Practices for Maintaining the Cummins M11 Camshaft System

• Routine Inspection: Regularly check camshaft bushings for signs of scoring or uneven wear.

• Seal Replacement: Always replace gaskets and seals whenever disassembly occurs to avoid future leaks.

• Use Quality Lubricants: Ensure the M11’s lubrication system is functioning correctly to prevent premature bushing wear.

• Pair with Overhaul Kits: When rebuilding, consider pairing camshaft components with a full overhaul kit for the Cummins M11 to maximize reliability.