Remanufactured Caterpillar 3412 HEUI Diesel Engine – Basic Long Block, 27.0L V12
$35,888.00
This remanufactured Caterpillar 3412 HEUI diesel engine is a remanufactured V12 Basic Long Block supplied by Engines Factory for heavy industrial, marine, and power generation applications. Confirm fitment using applicable vehicle, engine, or equipment identification and listed applications. The exact configuration and included components are confirmed during the quote or order-review process.
Did you like this product? Add to favorites now and follow the product.
FL (800) 355-0068Start Live Call
Description
Product overview
This remanufactured Caterpillar 3412 HEUI diesel engine is a remanufactured V12 power unit supplied by Engines Factory. The remanufactured Caterpillar 3412 HEUI diesel engine is available in Basic Long Block configuration and is intended for heavy industrial, marine propulsion, and power generation applications listed for this product. Engines Factory supplies remanufactured diesel engines and can help confirm whether this engine matches your equipment. Our sales team can review the listed applications and available configuration to recommend the correct Basic Long Block option.
Listed applications
Typical applications shown for this product include large mining trucks and equipment, oil and gas industry machinery, marine propulsion for large vessels, power generation for primary or standby use, heavy construction equipment, and industrial power units. These applications reflect common uses for the 3412 family as shown in the product facts; verify match to your specific equipment.
Available configurations
Available configurations for this product include Basic Long Block. Configuration names and options are shown for this product; request confirmation for other configurations or component scopes not listed.
Product details
The Caterpillar 3412 engine is a V12 diesel with a 27.0-liter displacement as shown in the supplied product facts. Where applicable, the HEUI variant uses engine oil pressure to generate high injection pressure and provides electronically controlled, high-pressure fuel injection. The Cat 3412 HEUI engine designation indicates the same engine family with the HEUI fueling system where specified. The engine family designation identifies the base architecture and displacement shown for the 3412 series.
Fitment and identification
Confirm fitment using applicable vehicle, engine, or equipment identification and the listed applications. Reference SKU 8406TK when requesting details or clarifications related to this remanufactured 3412 replacement engine. When requesting details, provide applicable vehicle, engine, or equipment identification to reduce the risk of mismatched parts. Contact sales to confirm exact compatibility for each equipment make and model.
Configuration confirmation
The exact configuration and included components are confirmed during the quote or order-review process.
Request a quote
Engines Factory supplies remanufactured diesel powertrains nationwide. To request pricing for a remanufactured Caterpillar 3412 HEUI diesel engine, request a quote or call 800-355-0068 for assistance.
Additional information
| make | |
|---|---|
| model | |
| Engine Size |
- All engines are assembled in the USA.
- Replaces 100% of rings, bearings, bushings, gaskets, and seals.
- Matched OEM requirements for piston type depending upon HP and application.
- All heads get new valves and are vacuum tested to ensure the quality of the valve job. All heads are pressure tested and upgraded to the latest style valve seal.
- Cylinder head seats replaced 100% new.
- Camshaft is checked for size, reground, if necessary, and micropolished to OEM specifications.
- All connecting rods are demagnetized.
- Core plugs are 100% stainless steel to avoid corrosion.
- Blocks, heads and crankshafts are 100% magnaflux tested to avoid cracked components.
- Connecting rods have new bushings installed and both large and small end are remachined to OEM specifications.
Crankshaft is checked for size, reground, if necessary, and micropolished to OEM specifications.
ENGINE TESTING
Every engine is machined using state-of-the-art equipment and assembled using precise and repeatable methods. All engine production follows documented lean manufacturing processes and principles to create consistent quality and dependable outcomes.
All Short Block, Long Block, and Long Block Premium are 100% Sim tested before shipment.
Complete Drop-In engines are 100% dyno tested before shipment. Computer controls ensure that each engine dyno test is conducted under standard, repeatable settings. Every engine is run through a warm-up cycle; three separate cruise segments simulating light, medium, and heavy throttle conditions; maximum torque and horsepower tests; both high and low idle tests; and a black light leak detection test with dyed oil, coolant, and fuel.
we’ve been delivering remanufactured engines for skid steer loaders for over 30 years—longer than any competitor in the industry. Our veteran machinists, many with decades of experience, follow engine-specific rebuild procedures to ensure consistent quality with every unit.
Each engine is carefully rebuilt to meet or exceed OEM specifications, using top-tier components and proven techniques. This is more than just a repair—it’s a full remanufacturing process designed to restore the engine to like-new condition.
Before shipping, every complete skid steer engine is dyno-tested for performance and reliability, so you can install with confidence.
The product images shown are for illustration purposes only and may not be an exact representation of the final product. All information is subject to change without notice.
On-Road Complete Drop-In configurations: 2yr/unlimited mileage
Long Block configurations: 1 year/unlimited mileage.
Motorhome/RV Applications: 1 year parts and labor only.
Some restrictions apply; see limited warranty details or call for more information.
Factory-Direct Engines & Fast Shipping
Engines Factory supplies remanufactured gas, diesel, marine, and industrial engines, along with transmissions, cylinder heads, turbos, and other powertrain components. We serve repair shops, dealerships, fleets, marine businesses, and vehicle owners nationwide. Contact our team for availability, pricing, and a professional quote. Nationwide shipping is available.
Copyright © 2026 Engines Factory. All rights reserved.
