Parts for Caterpillar 3412 – Camshaft Section

The camshaft system is one of the most critical assemblies inside the Caterpillar 3412 engine. Designed for heavy-duty marine and industrial use, the 3412 relies on precision valve timing and durable camshaft components to maintain efficiency, reliability, and long service life. At Diesel Pro Power, we provide OEM-quality camshafts, gears, bushings, lifters, and keys engineered specifically for the Caterpillar 3412 platform, ensuring smooth operation under the most demanding conditions.

Camshaft for Caterpillar 3412 Marine Engines

The camshaft is the heart of the valve actuation system, controlling intake and exhaust cycles with precise timing. For Caterpillar 3412 marine engines, the camshaft is designed to handle extended running hours, high torque demands, and continuous-duty cycles at sea. Built to Caterpillar specifications, this camshaft ensures:

• Accurate valve lift and duration for optimal combustion.

• Long-term durability in marine and industrial environments.

• Compatibility with multiple Caterpillar 3412 engine serial prefixes, ensuring a proper fit.

• Reliability under high-load conditions common in propulsion, power generation, and heavy machinery applications.

Whether you are performing a full rebuild or replacing a worn-out camshaft, this component is essential to restoring factory performance.

Camshaft Woodruff Key for Caterpillar 3412 Engines

The camshaft woodruff key is a small but vital part of the camshaft assembly. Its primary role is to lock the camshaft gear securely onto the shaft, ensuring perfect timing between the crankshaft and camshaft. A worn or damaged key can cause timing slippage, resulting in performance loss or engine failure.

• Provides secure alignment of camshaft and gear.

• Manufactured to Caterpillar’s exact tolerances.

• Easy to install and replace during routine rebuilds.

Replacing this component is an inexpensive but critical step to ensure long-term engine health.

Camshaft Bushings for Caterpillar 3412 Engines

The camshaft rotates at high speed inside the block, and bushings are what keep it stable. Without proper bushings, excess play and friction can lead to premature wear, noise, and even catastrophic failure. For the Caterpillar 3412, we offer two options:

Standard Camshaft Bushing – 1.00" Wide

• Provides smooth rotation and proper alignment of the camshaft.

• Reduces metal-to-metal contact, minimizing wear.

• Designed to maintain oil clearance for proper lubrication.

Wide Camshaft Bushing – 1.30" Wide

• Offers increased stability for high-load applications.

• Ideal for marine engines running continuous-duty cycles.

• Extended surface area reduces wear and prolongs service life.

Choosing the correct bushing width depends on application demands and engine build specifications. Both are precision engineered to Caterpillar standards.

Camshaft Gear for Caterpillar 3412 Engines

The camshaft gear is responsible for transmitting rotational force from the crankshaft, ensuring synchronized valve timing. For the Caterpillar 3412, the gear is engineered for strength and durability.

• Designed with 86 teeth for proper engagement.

• Hardened material resists wear and deformation.

• Maintains accurate timing under high stress and vibration.

Replacing a worn camshaft gear is critical during an overhaul to avoid engine timing issues and valve train damage.

Valve Lifters for Caterpillar 3412 Engines

Valve lifters, also known as tappets, play a vital role in transferring camshaft motion to the pushrods and valves. In the Caterpillar 3412, lifters must handle constant stress while maintaining smooth, reliable operation.

• Built from hardened materials for long service life.

• Maintains accurate valve lash and reduces wear on camshaft lobes.

• Ensures smooth valve actuation for efficient combustion.

Replacing lifters during a rebuild is highly recommended to prevent premature wear on new camshaft components.

Why Buy Caterpillar 3412 Camshaft Parts from Diesel Pro Power

Choosing the right supplier for Caterpillar 3412 camshaft components is just as important as choosing the right parts. At Diesel Pro Power, we stand apart by delivering:

• Trusted by 40,000+ Customers Worldwide – A proven track record of customer satisfaction across marine, industrial, and power generation sectors.

• OEM-Quality Parts – Every camshaft, gear, bushing, key, and lifter is engineered to meet Caterpillar’s original specifications.

• Fast Global Shipping – We ship parts quickly to minimize downtime and keep your operations moving.

• Dedicated 3412 Catalog – Our catalog is designed for ease of use, so you can quickly find the exact part needed for your Caterpillar 3412 rebuild.

• Expert Support – Our team of specialists can help ensure you get the right part for your specific engine serial number and application.