Cummins L10 Crankshaft Parts Catalog

The crankshaft is one of the most critical components in the Cummins L10 engine. Responsible for converting the linear motion of the pistons into rotational force, it provides the backbone for power transmission across the engine’s drivetrain. A properly functioning crankshaft ensures smooth operation, balanced engine performance, and extended service life. Diesel Pro Power supplies new Cummins L10 crankshafts, bearings, seals, dampers, and related components, all designed for durability, precision, and reliable performance.

With over 40,000 satisfied customers worldwide, Diesel Pro Power is the trusted source for genuine and replacement Cummins L10 crankshaft parts, available for immediate shipping and backed by expert support.

Complete Crankshaft Assemblies for Cummins L10

New Cummins L10 Crankshaft

We provide brand-new crankshaft assemblies for the Cummins L10, manufactured to OEM specifications and designed to withstand heavy-duty demands. These crankshafts are precisely machined to ensure exact tolerances, oil passage alignment, and balanced weight distribution. A new crankshaft is the ideal solution when rebuilding an L10 engine that has suffered severe wear, cracks, or journal damage that cannot be corrected through machining.

Available Variants:

• Standard Cummins L10 Crankshaft: Direct replacement for most L10 engines, precision balanced for optimal performance.

• Short Snout L10 Crankshaft: A variation featuring a shortened snout with five bolt holes in the front, designed for specific application requirements.

Both options ensure smooth operation, reduced vibration, and extended reliability in marine and industrial Cummins L10 engines.

Crankshaft Bearings for Cummins L10

Standard Crankshaft Bearing Shell Set

The standard-size crankshaft bearing shell set provides complete upper and lower bearings for the Cummins L10. These bearings are essential to maintain oil film thickness, reduce friction, and prevent metal-to-metal contact. Over time, crankshaft bearings wear down due to continuous load cycles and lubrication challenges. Replacing them with OEM-quality bearings restores proper clearances and protects the crankshaft journals.

Oversize Crankshaft Bearing Shell Set – 0.010"

When a crankshaft has been machined due to wear or scoring, oversize bearings are required to restore the correct fit. Diesel Pro Power offers oversize bearing sets in 0.010-inch dimension for the L10, ensuring precise installation after crankshaft regrinding. These bearings are manufactured to withstand the extreme forces generated within the engine while maintaining proper lubrication channels.

Crankshaft Seal Kits for Cummins L10

Proper sealing around the crankshaft is essential for maintaining oil pressure and preventing leaks. Diesel Pro Power supplies front and rear crankshaft seal kits for all Cummins L10 engines.

Front Crankshaft Seal Kits

• Internal Damper Applications: Includes the crankshaft seal and sleeve designed for L10 engines with an internal damper system.

• External Damper Applications: Kit designed for engines equipped with an external damper, ensuring proper oil retention and reduced risk of leakage.

• Non-Automotive Applications: A heavy-duty sealing kit tailored for industrial and marine L10 engines.

Rear Crankshaft Seal Kits

• Early Design Engines: Seal and sleeve kit for earlier L10 engines, maintaining compatibility with original builds.

• Late Design Engines: Designed for later-model Cummins L10 engines, these kits provide upgraded sealing reliability and longevity.

Each kit includes both the seal and the installation sleeve, ensuring proper alignment and reducing the risk of premature seal failure.

Vibration Dampers for Cummins L10

The crankshaft damper, also known as a vibration damper or harmonic balancer, is designed to reduce torsional vibrations in the crankshaft. Without a properly functioning damper, crankshaft stress increases, leading to fatigue and potential catastrophic failure.

Features of Cummins L10 Vibration Dampers

• High-strength steel construction for long service life.

• Designed with four bolt holes for secure installation.

• Available in multiple outside diameters to match specific engine builds.

• Balanced to OEM standards for reduced vibration and smoother operation.

By absorbing and dissipating vibrations, these dampers extend the life of the crankshaft and reduce wear on connected components such as bearings and seals.

Supporting Components for the Cummins L10 Crankshaft

In addition to crankshafts, bearings, seals, and dampers, Diesel Pro Power provides associated components critical to crankshaft performance:

Front Cover Seal Ring

The Cummins L10 front cover seal ring ensures a tight seal between the front cover and crankshaft housing. Even a minor leak at this point can lead to loss of lubrication and potential bearing damage. Our precision-manufactured seal rings are designed for long-lasting performance in high-demand applications.

Gasket Sets for the L10

While not part of the crankshaft itself, gasket sets play a crucial role during crankshaft installation or replacement. Whenever the crankshaft is serviced, it is best practice to replace both upper and lower gasket sets to guarantee proper sealing. Diesel Pro Power offers complete gasket sets specifically for the L10, ensuring that every surface is properly sealed during reassembly.

Importance of Crankshaft Maintenance in Cummins L10 Engines

The crankshaft is subjected to tremendous mechanical stress and constant rotational forces. Preventive maintenance and timely replacement of related components are essential to extend the life of the L10 engine.

Common Issues that Indicate Crankshaft Attention is Needed:

• Low oil pressure caused by worn crankshaft bearings.

• Oil leaks from worn front or rear seals.

• Excessive engine vibration from a damaged or unbalanced crankshaft damper.

• Knocking sounds caused by bearing clearance issues.

By replacing worn crankshaft parts proactively, operators can avoid catastrophic failures and costly downtime.

Why Choose Diesel Pro Power for Cummins L10 Crankshaft Parts

• Proven Expertise: Decades of experience supplying parts for Cummins engines, trusted by professionals worldwide.

• Wide Inventory: Complete selection of L10 crankshafts, bearings, seals, dampers, and related components.

• Fast Shipping: All items listed as in stock are ready for immediate shipment to minimize downtime.

• Global Customer Base: Over 40,000 satisfied customers in marine, industrial, and heavy-duty applications.

• Dedicated Support: Our team ensures you receive the right crankshaft parts for your specific Cummins L10 configuration.