Parts for Caterpillar 3412C – Engine Overhaul Kit Section

The Caterpillar 3412C engine is an advanced version of the proven 3412 platform, designed to deliver higher performance, cleaner operation, and improved fuel efficiency across demanding applications. Found in marine propulsion, industrial power generation, mining support, and oilfield service equipment, the 3412C has become a trusted choice for operators requiring high horsepower with continuous-duty reliability.

Like all heavy-duty diesel engines, the 3412C eventually requires an in-frame or out-of-frame overhaul to restore performance, extend service life, and prevent costly downtime. Selecting the correct rebuild kit ensures compatibility with your exact arrangement number and serial prefix while maintaining the original compression ratio required for your specific application.

Below is a complete breakdown of available overhaul kits and gasket sets for the Caterpillar 3412C.

Rebuilt Kit for Caterpillar 3412C – 14.1:1 Compression Ratio

This overhaul kit is designed for Caterpillar 3412C engines configured with a 14.1:1 compression ratio. This ratio provides a strong balance between power and efficiency, ideal for continuous-duty marine and industrial applications.

Features

• Complete piston, liner, ring, and gasket coverage for a full in-frame rebuild.

• Restores combustion efficiency and fuel economy.

• Designed for continuous-duty operation in harsh environments.

Compatible Arrangements

1054832, 1054833, 1160050, 1160051,
1326105, 1326106, 1326109, 1326110,
1433522, 1433523, 1433524, 1433525,
1498154, 1498155, 1498156, 1498157,
4P6983, 4P6984,
1302549, 1031819, 1031820,
1160052, 1160053,
1797010, 1797011, 1797012, 1797013,
1483597, 1484447, 1484448,
4643952, 4644084, 4649656

Serial Number Prefixes

3JK, 60M, 7BL, RTY

Rebuilt Kit for Caterpillar 3412C – 14.3:1 Compression Ratio

This kit is built for Caterpillar 3412C engines configured with a 14.3:1 compression ratio, offering greater combustion efficiency, improved torque delivery, and enhanced power density. Engines configured this way are typically used in marine propulsion or power generation applications requiring maximum output.

Benefits of the 14.3:1 Ratio

• Higher cylinder pressures for improved power delivery.

• Increased fuel efficiency under constant heavy load.

• Cleaner combustion and better reliability in marine propulsion.

Compatible Arrangements

4R9970, 4R9980, 1243400,
1790769, 1790770, 1790771,
1855890,
1W0733, 1W3500, 1W733,
4N2247, 4W1146, 4W3920,
7W7584, 5R9137, 5R9140, 5R9150,
1315410, 1315411, 1316204,
1751240, 1790772, 1790773, 1790774, 1790775, 1790776, 1790778, 1790779, 1790780,
1793231, 1793232,
1835411, 1835412, 1835413, 1835415, 1835416, 1835417, 1835418, 1835454,
2385322 through 2385340,
2385354 through 2385371,
1483589, 1484440

Rebuilt Kit for Caterpillar 3412C – 13.0:1 Compression Ratio

This specialized rebuild kit is for Caterpillar 3412C engines configured with a 13.0:1 compression ratio. This lower ratio is typically selected for specific heavy-duty applications where reduced combustion pressures are required for longer service life, smoother operation, or reduced stress on engine internals.

Features

• Piston and liner set matched for 13.0:1 compression.

• Ideal for operators prioritizing durability over peak power.

• Supports extended operating hours in demanding environments.

Compatible Arrangements

1483588, 1483596, 1484439, 1484447

Serial Number Prefix

RTY

Gasket Set for Caterpillar 3412C In-Frame Repair

For operators performing in-frame service without a full rebuild, this gasket set provides all essential sealing components to restore leak-free performance. Whether replacing liners, working on cylinder heads, or conducting partial in-frame work, this set ensures complete coverage.

Features

• Includes all major gaskets and seals required for in-frame work.

• Built to maintain high compression sealing integrity.

• Designed for Caterpillar 3412C along with related 3412-series configurations.

Compatible Serial Number Prefixes

9BR, RLR, RTY, REA, 3JK, 7BL, 7HG, 9KS, 9PW

Why Choose Diesel Pro Power for Caterpillar 3412C Rebuild Kits

Exact Fit by Arrangement and Serial

Every Caterpillar 3412C engine is built with specific arrangement numbers and serial number prefixes that determine the exact components required for a successful rebuild. At Diesel Pro Power, each kit is carefully matched to these identifiers, ensuring that pistons, liners, gaskets, and bearings fit precisely. This level of accuracy eliminates the risk of ordering incorrect components, reduces downtime, and provides peace of mind that your rebuild will meet Caterpillar’s original specifications.

Optimized for Demanding Duty

The Caterpillar 3412C engine is relied upon in some of the harshest operating environments in the world—from powering ocean-going vessels and offshore rigs to running prime power generators and heavy-duty industrial equipment. Our overhaul kits are built to thrive under these conditions. Reinforced materials, advanced sealing technologies, and components tested for extreme temperature and pressure cycles ensure that your rebuilt engine can withstand years of heavy use without compromise.

Trusted Worldwide

With over 40,000 satisfied customers across more than 180 countries, Diesel Pro Power has earned a reputation as the most trusted source for aftermarket Caterpillar parts. Customers around the globe—from marine fleet operators to mining companies—choose us because we consistently deliver high-quality parts, fast order fulfillment, and reliable support. This worldwide trust is a reflection of our unwavering commitment to excellence and our ability to support operators across industries with dependable rebuild solutions.

Complete Solutions in One Place

When planning a Caterpillar 3412C overhaul, you shouldn’t have to waste time sourcing parts from multiple suppliers. Diesel Pro Power provides everything in one place: complete in-frame overhaul kits, gasket sets for partial rebuilds, and supporting components required to get your engine back to full strength. By offering complete solutions, we streamline the process for our customers, ensuring all parts are compatible and ready for installation. This integrated approach reduces downtime, simplifies logistics, and ensures you have exactly what you need for a successful rebuild.

Expert Support and Technical Guidance

Beyond supplying parts, Diesel Pro Power offers unmatched expertise. Our team understands the complexities of Caterpillar engines and can help guide you in selecting the right kit for your exact arrangement number and serial prefix. We also provide technical resources, maintenance tips, and rebuild guidance to help operators get the most from their investment. Whether you are overseeing a marine engine overhaul in a shipyard or performing an in-frame rebuild in an industrial facility, our experts are available to support you at every step. With Diesel Pro Power, you gain more than a supplier—you gain a trusted partner committed to your success.