Cat 3412 Industrial Diesel Fire Pump Engine. Ratings: 476-551 bkW (638-739 bhp) @ 1750-2100 rpm are non-certified. Available for global non-regulated areas. FM Approved, UL Listed.

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Engine Specifications
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Minimum Rating 638.0 BHP 476.0 bkW
Maximum Rating 739.0 BHP 551.0 bkW
Emissions Non-certified Non-certified
Bore 5.4 in 137.0 mm
Stroke 6.0 in 152.0 mm
Displacement 1650.0 in³ 27.0 l
Aspiration Turbocharged Aftercooled Turbocharged Aftercooled
Engine Weight - Net Dry 6018.0 lb 2730.0 kg
Oil Change Interval 250.0 h 250.0 h
Rotation from Flywheel End Counterclockwise Counterclockwise
Flywheel and Flywheel Housing SAE No. 0 SAE No. 0
Flywheel Teeth 151 151

Engine Design

Available for global non-regulated areas - FM approved - UL listed - U.S. and Canada - Meets NFPA 20 requirements; Proven reliability and durability; Robust diesel strength design prolongs life and lowers owning and operating costs; Market-leading power density; Core engine components designed for reconditioning and reuse at overhaul


Every Cat® engine is full-load tested to ensure proper engine performance

World-class Product Support Offered Through Global Cat Dealer Network

More than 2,200 dealer outlets; Cat factory-trained dealer technicians service every aspect of your petroleum engine; Cat parts and labor warranty; Preventive maintenance agreements available for repair before-failure options; S•O•SSM program matches your oil and coolant samples against Caterpillar set standards to determine: Internal engine component condition / Presence of unwanted fluids / Presence of combustion by-products / Site-specific oil change interval

Over 80 Years of Engine Manufacturing Experience

Ownership of these manufacturing processes enables Caterpillar to produce high quality, dependable products; Manufacturing of cast engine blocks, heads, cylinder liners, and flywheel housings; Machining of critical components; Complete engine assembly

Web Site

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3412 Standard Equipment

Air Inlet System
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  • Air cleaner, regular duty with service indicators
  • Turbocharged