Blog
Feedback
Refer a Friend

Cummins 6BTA Parts for Canada - Crankshaft Section

Loading...

Crankshaft Components for Cummins 6BTA Engines

The crankshaft is the heartbeat of any internal combustion engine, and in the Cummins 6BTA, it plays a critical role in converting linear piston motion into the rotary force that drives power to the drivetrain. At Diesel Pro Power, we offer a curated selection of crankshaft components, seal kits, and support hardware designed specifically for 6B, 6BT, and 6BTA engine configurations. Trusted by over 40,000 satisfied customers worldwide, our catalog ensures compatibility, performance, and long-term reliability for industrial and marine diesel engines.

Overview of the Cummins 6BTA Crankshaft

The Cummins 6BTA crankshaft is a robust forged-steel component engineered for heavy-duty applications. It features:

  • Seven main bearing journals for optimal load distribution

  • Integral front gear for timing drive applications

  • Oil passageways for internal lubrication

  • Designed for either marine or industrial setups

Our new crankshafts include the front gear and are built to OEM-level tolerances, ensuring a direct fit replacement without machining.

Crankshaft Shell Bearings

Shell bearings (also known as main and rod bearings) are critical to the function of your crankshaft, allowing it to rotate freely within the engine block while maintaining proper oil clearance. We offer crankshaft bearing sets for the Cummins 6BTA in the following sizes:

Standard Size Shell Set

  • Suitable for engines with minimal wear or recently machined surfaces

  • Includes upper and lower bearings for a complete engine rebuild

Oversize Bearings

All bearing sets are manufactured with high-load and heat-resistance materials for long-term durability.

Front and Rear Crankshaft Seal Kits

Crankshaft seals prevent oil leakage at the front and rear of the engine. We carry several front and rear seal kit options depending on your Cummins 6BTA configuration:

Front Seal Kits

  • Basic Kit: Includes front crankshaft seal and dust shield

  • Enhanced Kit: Includes the seal and installation sleeve

  • Fits 4B3.9, 4BT3.9, 6B5.9, and 6BT5.9 engines

Rear Seal Kit

  • Designed for engines with dry clutch housings

  • Includes the seal and standard sleeve

These kits ensure a leak-free installation and protect internal components from contamination.

Crankshaft Vibration Dampers

Vibration dampers are essential for reducing torsional vibration and stress on the crankshaft. We offer two damper options:

Each damper is engineered to OEM standards and balanced for optimal performance across B, ISB, and QSB engine platforms.

Gasket Sets Related to Crankshaft Service

Servicing your crankshaft often requires gasket replacements to reseal critical areas. Our gasket kits include:

  • Lower Gasket Set: Includes seals for oil pan and crankshaft area. Compatible with engines using a front gear train.

  • Upper Gasket Set (Standard and Oversize 0.25 mm): Ensures proper sealing of the cylinder head and block surfaces after crankshaft reinstallation.

These gaskets are designed to work under high-pressure and temperature environments typical of Cummins 6BTA engines.

Expansion Plug Kit for the Block

During a crankshaft rebuild, it’s common to inspect and replace freeze plugs (expansion plugs). Our storm-type block plug kit is specifically designed for:

  • 4BT 3.9

  • 4BTA 3.9

  • 6BT 5.9

  • 6BTA 5.9

This kit helps maintain block integrity and cooling system performance during crankshaft service.

Common Symptoms of Crankshaft Wear or Failure

Identifying issues early can prevent major engine damage. Watch for these signs:

  • Knocking or deep tapping from the bottom end of the engine

  • Low oil pressure despite adequate oil levels

  • Metal shavings in the oil or oil filter

  • Excessive engine vibration or imbalance

  • Visible scoring or blueing on crank journals

Timely replacement of crankshaft bearings and seals can extend the life of your Cummins 6BTA significantly.

Crankshaft Replacement Considerations

When replacing a crankshaft, always check for:

  • Main bore alignment (line boring may be required)

  • Bearing clearances using Plastigage

  • Proper torque on main and rod caps

  • Damper and flywheel condition

  • Rear gear train and timing components

We also recommend flushing the oil galleries and replacing the oil cooler after a crankshaft failure.

Marine vs. Industrial Applications

Cummins 6BTA engines are commonly used in both marine propulsion and stationary power applications. When selecting crankshaft components:

  • Marine engines may require corrosion-resistant seal materials

  • Industrial engines typically experience higher load cycling, requiring more frequent bearing inspection

Always verify the CPL (Control Parts List) number of your engine to ensure proper component matching.

Why Buy From Diesel Pro Power?

  • Over 40,000 satisfied customers worldwide

  • All components are in stock and ready to ship

  • We specialize in Cummins diesel engines

  • Multilingual support for international clients

  • Technical expertise from real diesel engine professionals

+
URL Copied Send Quote