Parts for Caterpillar 3406 for Canada - Crankshaft Section

Parts for Caterpillar 3406 – Crankshaft Section

The crankshaft system of the Caterpillar 3406 engine is central to its legendary reliability. Designed to convert the linear power of combustion into rotational motion, the crankshaft, main bearings, thrust washers, dampers, and related components must be precisely manufactured and maintained to ensure maximum durability and efficiency. At Diesel Pro Power, we supply premium aftermarket parts for every aspect of the Caterpillar 3406 crankshaft assembly—engineered to meet or exceed Caterpillar performance standards.

Crankshafts for Caterpillar 3406 Engines

We offer new crankshafts for Caterpillar 3406 engines, available in both wide bearing and narrow bearing designs. These designs are critical depending on the engine build specification and application.

• Wide Bearing Design – Provides enhanced load distribution and durability under heavy-duty conditions. Ideal for engines working in high-torque environments such as construction, mining, and marine propulsion.

• Narrow Bearing Design – Common in later builds of the 3406 series. Optimized for efficiency while maintaining structural integrity under demanding load cycles.

Both designs are precision-balanced and manufactured for exact fitment, ensuring smooth operation and long-term reliability.

Main Bearings for Caterpillar 3406 Engines

Main bearings play an essential role in supporting the crankshaft and allowing it to rotate with minimal friction. We supply a complete selection of bearings for Caterpillar 3406 crankshafts, available in multiple sizes to match the condition of your engine block and crankshaft journal.

• Standard Size Main Bearings – Designed for engines with crankshafts and blocks still within factory specifications.

• Oversize Main Bearings – Available in .010”, .025”, and .050” dimensions to accommodate crankshafts that have been machined or reground. These bearings restore factory clearances and extend engine service life.

Every bearing is precision-manufactured for maximum oil film retention and reduced wear under heavy load.

Thrust Washers for Caterpillar 3406

The thrust washer ensures that the crankshaft maintains proper end play and does not move excessively within the engine block. Each Caterpillar 3406 requires two thrust washers to properly align and stabilize the crankshaft during operation. Premium aftermarket thrust washers help prevent premature wear, protect the crankshaft journals, and maintain accurate timing gear alignment.

Vibration Dampers for Caterpillar 3406

The vibration damper (also known as a harmonic balancer) is crucial to crankshaft health. It reduces torsional vibrations that develop as the crankshaft rotates under load. Without a properly functioning damper, crankshafts can develop cracks, fatigue, or fail prematurely. Diesel Pro Power supplies high-quality vibration dampers designed specifically for Caterpillar 3406 and 3408 engines, ensuring smoother operation and longer crankshaft life.

Crankshaft Gears for Caterpillar 3406

A properly meshed crankshaft gear ensures accurate timing and smooth power transfer between the crankshaft and the camshaft. We offer replacement crankshaft gears for the Caterpillar 3406, manufactured with hardened steel for maximum durability. These gears are precision cut to exact specifications, ensuring long-lasting reliability in both industrial and marine applications.

Crankshaft Dowel Pins

The dowel pin provides accurate gear positioning on the crankshaft. Without proper alignment, timing issues can develop, leading to loss of efficiency or serious engine damage. Replacement dowel pins for the Caterpillar 3406, 3408, and 3412 engines are available, ensuring proper installation and secure operation of crankshaft gears.

Crankshaft Seals for Caterpillar 3406

To maintain oil integrity and prevent leaks, front and rear crankshaft seals are essential. These seals are engineered for long-lasting resistance to heat, friction, and high-pressure oil conditions inside Caterpillar 3406 engines.

• Front Crankshaft Seal – Prevents oil leakage around the crankshaft pulley area.

• Rear Crankshaft Seal – Protects the flywheel housing area from oil leaks while ensuring proper crankshaft operation.

Both seals are precision-molded and reinforced for maximum durability in heavy-duty applications.

Why Buy Caterpillar 3406 Crankshaft Parts from Diesel Pro Power

Choosing the right crankshaft components for your Caterpillar 3406 engine is only half the equation—selecting the right supplier ensures that those parts deliver the performance, durability, and reliability you expect. At Diesel Pro Power, we combine premium aftermarket quality with decades of expertise, supporting operators who depend on the legendary strength of the 3406 platform. Here’s why thousands of professionals continue to trust us:

• Trusted by 40,000+ Customers Worldwide – Our customer base spans more than 180 countries, ranging from marine operators and fleet owners to industrial contractors. With this global reach, you can be confident that our crankshaft parts have been proven in the toughest environments.

• Premium Aftermarket Quality – Every crankshaft, bearing, thrust washer, seal, and damper is manufactured to meet or exceed Caterpillar specifications. That means precise fitment, dependable lubrication, and long service life even in heavy-duty cycles.

• Fast Worldwide Shipping – Downtime is costly, which is why we focus on rapid order processing and shipping to virtually any location. Whether your Caterpillar 3406 engine is powering a vessel, generator, or piece of construction equipment, we’ll deliver the crankshaft components you need without delay.

• Dedicated 3406 Catalog – Our catalog is organized by system and component type, allowing you to find the exact crankshaft, main bearings, or vibration damper with ease. This streamlined layout saves time and prevents errors when ordering critical engine parts.

• Expert Technical Support – Crankshaft rebuilds and bearing replacements require precision. Our team of specialists is available to guide you through selecting the right oversize bearings, understanding wide vs. narrow bearing designs, or installing seals and dampers correctly.

By choosing Diesel Pro Power, you’re investing in more than just crankshaft parts—you’re gaining a partner committed to maximizing the performance and uptime of your Caterpillar 3406 engine.