Cummins ISB 6.7L Crankshaft & Related Components Catalog

The Cummins ISB 6.7L engine, trusted in marine propulsion, industrial machinery, agriculture, and power generation, depends on a precisely engineered crankshaft system to deliver reliable performance. Every part in this catalog is a Diesel Pro Power premium aftermarket component, designed to meet or exceed OEM standards while providing exceptional value and availability.

New Crankshaft for Cummins ISB 6.7L

Our Diesel Pro Power premium aftermarket crankshaft is built from forged steel for maximum strength and fatigue resistance. It is precision-machined for correct oil clearance, smooth rotation, and perfect journal alignment.

• Manufactured to OEM-equivalent tolerances.

• Ideal for replacing damaged or worn crankshafts in ISB 6.7L engines.

• Does not include timing gear, making it suitable when your existing gear is in good condition.

Replacing your crankshaft with a Diesel Pro Power premium component ensures restored balance, minimized vibration, and extended engine life.

Complete Crankshaft Assembly for ISB 6.7L

This Diesel Pro Power premium aftermarket crankshaft assembly includes the crankshaft with the timing gear already installed for maximum convenience.

• Pre-installed timing gear saves installation time and eliminates alignment errors.

• Designed for full overhauls where both crankshaft and gear need replacement.

• Perfect for engines with damaged gear teeth or scoring.

A complete assembly is often the most efficient solution during major engine rebuilds.

Lower Gasket Set – Rear Gear Train Engines

Our Diesel Pro Power premium aftermarket lower gasket set contains all the essential seals and gaskets needed when working on the crankshaft and bottom end.

• Includes oil pan gaskets, rear main housing gaskets, and related seals.

• Designed for ISB 6.7L engines equipped with rear gear trains.

• Ensures proper sealing to maintain oil pressure and prevent leaks.

This set is an essential part of any bottom-end rebuild or crankshaft service.

Crankshaft Bearing Shell Sets

All our bearing sets are Diesel Pro Power premium aftermarket components, manufactured with tri-metal materials for superior load-carrying capability and long service life.

Standard Bearing Shell Set

• For crankshafts within original factory specifications.

• Includes complete upper and lower main bearings.

Oversize 0.25 mm Bearing Shell Set

• For crankshafts ground undersize by 0.25 mm.

• Ensures correct oil clearance after journal machining.

Oversize 0.50 mm Bearing Shell Set

• For crankshafts ground undersize by 0.50 mm.

• Provides a secure fit and proper lubrication for heavily machined crankshafts.

Using the correct Diesel Pro Power premium bearing size prevents premature wear and maintains proper oil film integrity.

Front and Rear Crankshaft Seal Kits

Our Diesel Pro Power premium aftermarket crankshaft seal kits are engineered for excellent sealing performance and long service life.

Front Seal Kit

• Includes both the seal and sleeve.

• Protects the crankshaft nose area from oil leaks.

Rear Seal Kit – Dry Clutch Housing

• For engines with dry clutch setups.

• Includes seal and sleeve for complete sealing restoration.

Rear Seal Kit – Wet Clutch Housing

• Features a double-lip seal for enhanced oil retention.

• Designed for wet clutch applications.

Replacing seals during crankshaft service prevents oil leaks and protects the engine from contamination.

Vibration Dampers for ISB 6.7L

Every vibration damper we offer is a Diesel Pro Power premium aftermarket component, built to control torsional vibrations and extend crankshaft life.

8.23” Outside Diameter – 4 Bolt

• Compact size for tight-space applications.

9.7” Outside Diameter – 4 Bolt

• Larger mass for improved vibration control in high-load situations.

A fresh damper ensures smooth operation and prevents long-term crankshaft fatigue.

Maintenance Considerations

When using Diesel Pro Power premium aftermarket crankshaft components, follow these best practices:

• Maintain proper oil pressure and lubrication quality.

• Replace seals and gaskets during any crankshaft service.

• Inspect vibration dampers at recommended service intervals.

• Select correct bearing sizes for journal specifications.

Compatibility & Applications

These Diesel Pro Power premium aftermarket parts are designed for:

• Cummins ISB 6.7L engines in marine, industrial, agricultural, and generator applications.

• Select QSB 6.7L configurations.

• Bearing and seal kits also compatible with some ISB 5.9L engines (verify by specifications).