Parts for Caterpillar 3406B - Crankshaft Section

Parts for Caterpillar 3406B – Crankshaft Section

Crankshafts for Caterpillar 3406B

The crankshaft is the foundation of the Caterpillar 3406B’s rotating assembly, converting linear piston motion into usable torque and horsepower. We supply new replacement crankshafts built to Caterpillar specifications, available in both wide bearing and narrow bearing designs to suit different configurations of the 3406 family. Whether you are completing a major overhaul or replacing a damaged unit, these crankshafts are engineered for long service life and maximum reliability in demanding environments.

Main Bearings for Caterpillar 3406B

Main bearings provide the smooth, stable support that allows the crankshaft to rotate under heavy load. For the 3406B, we carry standard size bearings as well as oversized options (.010, .025, and .050). These bearings are manufactured with premium materials to ensure proper oil film strength, wear resistance, and alignment within the block. Having the correct bearing size is essential for maintaining proper oil clearance during rebuilds, extending the life of your crankshaft and reducing the risk of premature failure.

Thrust Washers for Caterpillar 3406B

Thrust washers are designed to control end play, preventing axial movement of the crankshaft inside the engine block. For the Caterpillar 3406B, two thrust washers are used per engine to maintain correct positioning. By reducing friction and wear at the thrust surfaces, these components ensure smoother engine operation, longer crankshaft life, and reduced stress on connecting rods and main bearings.

Vibration Damper for Caterpillar 3406B

A crankshaft vibration damper is critical in controlling torsional vibration, which can cause fatigue and cracking if left unchecked. Our high-quality dampers for the Caterpillar 3406B are built to absorb and dissipate harmful vibrations, extending the life of the crankshaft, bearings, and gear train. Replacing a worn damper is an important part of preventive maintenance during an overhaul.

Crankshaft Gears for Caterpillar 3406B

The crankshaft gear is responsible for transferring power to the timing assembly. For the Caterpillar 3406B, our gears are precisely machined for smooth operation and long-lasting durability. With 80-tooth configurations, these gears ensure reliable timing accuracy, reducing the risk of power loss or premature wear in the valve train.

Crankshaft Dowel Pins

The dowel pin plays a small but essential role in correctly aligning the crankshaft gear on the Caterpillar 3406B. Precision-manufactured, these pins ensure proper installation and secure engagement with the gear, maintaining accurate timing and preventing misalignment issues during operation.

Crankshaft Seals for Caterpillar 3406B

Oil control is critical for crankshaft operation. We supply both front crankshaft seals and rear crankshaft seals for the Caterpillar 3406B. These seals are designed to withstand high temperatures, oil pressure, and vibration, keeping contaminants out and oil inside where it belongs. Replacing seals during a rebuild prevents oil leaks and maintains proper crankcase pressure for efficient performance.

Why Buy Caterpillar 3406B Crankshaft Parts from Diesel Pro Power

Trusted by 40,000+ Customers Worldwide – Diesel Pro Power has built a reputation for reliability, supporting engine operators in more than 180 countries. From fleet managers to independent operators, customers return to us because they know our crankshaft parts deliver consistent performance, helping keep Caterpillar 3406B engines running smoothly in marine, industrial, and heavy equipment applications.

Premium Aftermarket Quality – Every crankshaft, bearing, thrust washer, seal, and gear we supply is engineered to meet or exceed Caterpillar’s original performance standards. By choosing Diesel Pro Power, you gain access to durable components built from high-grade materials that ensure proper fit, maximum strength, and long service life even under the toughest operating conditions.

Fast Worldwide Shipping – We understand that downtime costs money. That’s why Diesel Pro Power prioritizes quick, reliable global delivery. Whether your Caterpillar 3406B engine is powering a vessel offshore, equipment in a construction zone, or machinery at a remote industrial site, our streamlined logistics ensure you receive the parts you need without unnecessary delays.

Dedicated 3406B Catalog – Finding the right crankshaft components can be time-consuming, but our organized catalog eliminates the guesswork. With parts grouped by system and function, you can quickly identify whether you need a replacement crankshaft, main bearings in specific oversizes, a vibration damper, or seals—saving valuable time during a rebuild or repair.

Expert Technical Support – Selecting and installing the correct crankshaft parts is crucial for extending engine life. Our team of specialists provides guidance on everything from proper bearing clearances and thrust washer fitment to crankshaft seal installation and vibration damper maintenance. Having expert help available ensures your Caterpillar 3406B engine rebuild is done right the first time.

Confidence in Every Rebuild – By sourcing your Caterpillar 3406B crankshaft components from Diesel Pro Power, you’re investing in proven reliability. You gain not just premium parts, but also the backing of a company trusted by tens of thousands of operators worldwide. With superior quality, rapid delivery, and professional support, you can be confident that your engine will perform at its best for years to come.