Caterpillar 3406B Camshaft and Related Components

The Caterpillar 3406B engine is one of the most respected diesel engines in the heavy-duty industry, known for its long service life, durability, and high performance across on-road, off-road, and industrial applications. At the heart of this engine’s operation lies the camshaft and its related components, which synchronize fuel injection, valve operation, and combustion efficiency.

A properly functioning camshaft system is critical for ensuring smooth operation, maximum power output, and reduced wear on internal components. At Diesel Pro Power, we offer a complete catalog of Caterpillar 3406B camshaft components designed to match OEM specifications, ensuring your engine continues to run with reliability and precision.

Complete Camshaft Parts Catalog for Caterpillar 3406B

Camshafts for Caterpillar 3406B Engines

• Standard Replacement Camshaft
  Our replacement camshaft is designed specifically for Caterpillar 3406B engines with serial prefix numbers ranging from 4TB00647 through 4TB01281. This camshaft restores proper timing and valve actuation, keeping your engine in peak condition.

• New Camshaft for 3406B and 3406C Engines
  For customers who prefer brand-new components, Diesel Pro Power offers a new camshaft for both the 3406B and 3406C models. This camshaft is precision-engineered to Caterpillar’s original specifications, delivering OEM-level performance and ensuring long-term durability.

Camshaft Gear for Caterpillar 3406B

The camshaft gear is critical in transferring rotational motion from the crankshaft to the camshaft, ensuring proper timing between piston movement and valve operation. Our camshaft gear features 64 teeth and is built for strength and durability to withstand the high torque demands of heavy-duty Caterpillar engines.

Camshaft Woodruff Key for Caterpillar 3406B

The woodruff key secures the camshaft gear to the camshaft itself. A small but vital component, it prevents slippage and ensures accurate synchronization. Our aftermarket woodruff key is machined for precision fitment, offering a reliable replacement solution for Caterpillar 3406 and 3412 engines.

Camshaft Bushings for Caterpillar 3406B

The camshaft bushings provide the bearing surface that allows the camshaft to rotate smoothly inside the block. Worn or damaged bushings can lead to camshaft misalignment and premature engine wear. Diesel Pro Power supplies two options for the Caterpillar 3406, 3408, and 3412 series:

• 1.00" Wide Camshaft Bushing – Designed for standard support locations.

• 1.30" Wide Camshaft Bushing – Offers added strength and wear resistance for high-load applications.

Both bushings are engineered from high-strength materials to ensure proper oil lubrication and extended service life.

Idler Gear Bushing for Caterpillar 3406B and 3406C

The idler gear bushing reduces friction and wear between the idler gear and the gear housing. As part of the timing gear train, this component is essential for keeping the camshaft, crankshaft, and fuel pump in proper synchronization. Our aftermarket idler gear bushing provides a precise fit for both the 3406B and 3406C engines.

Valve Lifters for Caterpillar 3406B

Valve lifters (or tappets) transfer camshaft motion to the pushrods, which in turn operate the valves. Worn lifters can result in poor valve actuation, reduced engine efficiency, and excessive noise. Diesel Pro Power offers heavy-duty valve lifters built to OEM specifications for Caterpillar 3406, 3408, and 3412 engines, ensuring smooth valve operation and reduced friction wear.

Why the Camshaft System Matters in the Caterpillar 3406B

The camshaft and its supporting components play a crucial role in:

• Valve Timing Control – Ensuring intake and exhaust valves open and close at the correct intervals.

• Fuel Efficiency – Proper timing improves combustion efficiency, reducing fuel consumption.

• Engine Longevity – Minimizing wear and maintaining synchronization between the crankshaft and valves.

• Performance Output – Delivering consistent torque and horsepower across demanding applications.

Replacing worn camshaft parts promptly prevents cascading engine damage, such as bent pushrods, broken rocker arms, or piston-to-valve interference.

Applications of the Caterpillar 3406B Engine

The 3406B engine is widely used in:

• Heavy-duty trucks (long-haul freight, vocational trucks, and construction vehicles)

• Marine vessels (commercial fishing boats, tugboats, and workboats)

• Industrial machinery (pumps, compressors, and drilling rigs)

• Agricultural equipment (tractors, harvesters, and irrigation systems)

Because of its versatility, the demand for replacement camshaft parts remains high across industries worldwide.

Why Buy Caterpillar 3406B Camshaft Components from Diesel Pro Power

• Trusted by Over 40,000 Customers Worldwide
  Diesel Pro Power has earned a reputation as a reliable global supplier of Caterpillar replacement parts. Customers across trucking, marine, industrial, and agricultural sectors rely on our parts to keep their engines running.

• OEM-Quality Fit and Performance
  Every camshaft, gear, bushing, and valve lifter in our catalog is manufactured to meet or exceed Caterpillar specifications. This ensures seamless compatibility with your 3406B engine and dependable performance in real-world applications.

• Fast Global Shipping
  We understand that downtime is costly. That’s why we provide rapid worldwide shipping, ensuring you receive the parts you need with minimal delays.

• Comprehensive Catalog for the 3406B
  Our catalog is organized by component, making it easy to find exactly what you need—whether it’s a full camshaft replacement or a small woodruff key.

• Expert Technical Support
  Our team of engine specialists is available to assist you in identifying the correct part for your Caterpillar 3406B. Whether you’re overhauling your camshaft system or replacing a single bushing, Diesel Pro Power is here to help.