Parts for Caterpillar 3412 – Engine Overhaul Kit Section

The Caterpillar 3412 engine is one of the most respected powerplants in heavy-duty applications. Known for its robust 12-cylinder V-configuration, high horsepower capabilities, and long service life, the 3412 has been relied on in marine propulsion, offshore operations, mining, industrial power generation, and oilfield use.

Over time, even the most reliable engines require a rebuild to restore their original efficiency and performance. That’s where our engine overhaul kits for Caterpillar 3412 come in. Each kit is designed with high-quality replacement components, ensuring your engine can be restored to factory-level specifications.

The following sections detail our available in-frame rebuild kits, organized by compression ratio, arrangement number, and serial number prefix. This ensures you select the exact kit tailored for your specific 3412 configuration.

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

This complete in-frame rebuild kit is designed for Caterpillar 3412 engines requiring a 14.1:1 compression ratio. This compression setting is widely used across many 3412 arrangements, striking an ideal balance between durability and performance.

Features

• Provides matched pistons, rings, and liners designed for the 14.1:1 specification.

• Optimized for engines in marine, power generation, and industrial use.

• Restores efficiency, reduces oil consumption, and supports long-term reliability.

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 3412 Engines – Arrangement 6N1160

This in-frame rebuild kit is engineered specifically for Caterpillar 3412 engines identified under arrangement number 6N1160.

Features

• Designed to match the internal geometry of the 6N1160 arrangement.

• Ensures proper compression ratio and long-term durability.

• Includes liners, pistons, gaskets, and related in-frame components.

Compatible Serial Number Prefix

60M (serials 1–386)

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

Some applications require a slightly higher compression setting. This 14.3:1 compression ratio kit is built for those Caterpillar 3412 engines designed for maximum combustion efficiency and torque output.

Benefits of the 14.3:1 Ratio

• Higher power density, optimized for engines under constant heavy load.

• Improves torque response in marine propulsion and power generation setups.

• Provides cleaner combustion and improved fuel utilization under full load.

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 3412 Engines – Extended Serial Coverage

Another option for Caterpillar 3412 engines includes a rebuild kit designed for later production engines with extended serial ranges. This ensures coverage not just for early manufacturing runs, but also for updated engine builds that followed.

Compatible Arrangement

• 6N1160 (later series)

Serial Number Prefixes

60M (387 and up)

Gasket Set for Caterpillar 3412 In-Frame Repair

In addition to full overhaul kits, we also provide gasket sets tailored for in-frame repair of Caterpillar 3412 engines. These sets include all critical sealing components to ensure leak-free operation after cylinder head work, liner replacement, or partial rebuilds.

Compatible Serial Number Prefixes

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

Why Choose Diesel Pro Power for Caterpillar 3412 Overhaul Kits

• Exact Compatibility: Every kit is matched to arrangement numbers and serial prefixes, eliminating guesswork.

• Built for Demanding Duty: Components are designed to withstand marine, industrial, and continuous-duty power generation conditions.

• Global Support: Over 40,000 satisfied customers worldwide trust Diesel Pro Power for parts and rebuild kits.

• Comprehensive Coverage: From full in-frame kits to gasket sets, everything needed to restore the 3412 is available in one place.