Detroit Diesel 12V149 Turbo Engine Overhaul Kit Catalog

Introduction to the Detroit Diesel 12V149 Turbocharged Engine

The Detroit Diesel 12V149 Turbo is one of the most powerful engines in the legendary Series 149 lineup. Known for its high horsepower output, rugged design, and reliability in demanding marine and industrial applications, the 12V149 Turbocharged engine has been trusted for decades in offshore vessels, military craft, heavy marine transport, and large industrial power generation.

This twelve-cylinder, V-configuration engine features a displacement of 1,492 cubic inches (24.4 liters), forced induction via turbocharging, and is designed for continuous duty under the harshest conditions. With proper maintenance, the 12V149 Turbo remains a workhorse capable of thousands of hours of operation. However, when the time comes for a major rebuild, a comprehensive engine overhaul kit is the most efficient and cost-effective solution.

At Diesel Pro Power, we provide complete Detroit Diesel 12V149 Turbo overhaul kits as well as individual supporting components—giving operators everything needed to restore performance, extend engine life, and minimize downtime.

Why Choose a Complete Overhaul Kit for the 12V149 Turbo?

Comprehensive Coverage

An overhaul kit consolidates all the essential components required for a top-to-bottom rebuild. Instead of sourcing parts individually, technicians receive matched components designed for the 12V149 Turbo engine, ensuring compatibility and precision.

Cost Savings

Purchasing a complete kit often results in significant savings compared to buying parts separately. The reduced downtime also translates into operational savings, particularly for vessels or equipment that cannot afford extended periods offline.

Reliability

All kits are designed to meet or exceed OEM specifications, ensuring that the rebuilt 12V149 Turbo maintains the same durability and power output that Detroit Diesel engines are known for.

Simplified Ordering

One order provides everything needed for a rebuild—liners, pistons, rings, seals, bearings, and gaskets—avoiding the risk of missed parts or compatibility issues.

Key Components in the Detroit Diesel 12V149 Turbo Overhaul Kit

Cylinder Liners and Pistons

The kit includes heavy-duty liners designed for the 149 series, precision-engineered pistons, and piston rings. Together, these components restore compression and ensure efficient combustion. For turbocharged applications, piston designs are optimized for higher thermal and mechanical stress, ensuring longevity under boost pressure.

Crankshaft Bearings and Seals

Front and rear crankshaft seals are available in both standard and oversized options. These seals prevent oil leakage and ensure crankcase integrity. Bearings are included to restore proper clearances, supporting smooth rotation of the crankshaft under high loads.

Gasket Sets

Complete gasket sets provide everything from head gaskets to oil pan seals. For the 12V149 Turbo, these gaskets are engineered to withstand higher cylinder pressures and temperatures associated with turbocharging.

Valve Train Components

Rebuild kits often include intake and exhaust valves, valve springs, retainers, and guides. Refurbishing the valve train ensures proper airflow, compression, and fuel efficiency after the overhaul.

Turbocharger-Related Seals and Gaskets

Since this catalog focuses on the turbocharged variant of the 12V149, supporting gaskets and seals specific to the turbo system are included to maintain boost pressure and prevent exhaust leaks.

Supporting Parts for the 12V149 Turbo

Crankshaft Seals

Both standard and oversized crankshaft seals are available for the front and rear of the engine. Oversized seals include sleeves for worn journals, extending crankshaft service life.

Cooling System Maintenance

To protect a newly rebuilt engine, we offer radiator cleaners and cooling system additives. These products help remove scale, rust, and deposits from cooling passages, ensuring the engine operates at proper temperature.

Gauges and Monitoring Systems

No overhaul is complete without reliable monitoring. Mechanical gauges, electrical gauges (12V and 24V), and gauge panels are available to keep operators informed of vital parameters such as oil pressure, water temperature, and boost levels.

Applications of the Detroit Diesel 12V149 Turbo Engine

Marine Power

• Commercial Vessels: Tugboats, ferries, and cargo ships rely on the 12V149 Turbo for heavy hauling and constant operation.

• Military Craft: The engine’s robust design makes it suitable for naval patrol boats and amphibious craft.

• Offshore Operations: Drilling rigs and supply boats depend on the 12V149 Turbo for reliable auxiliary power and propulsion.

Industrial Power

• Power Generation: The 12V149 Turbo is frequently used in generators providing electricity for remote sites or critical infrastructure.

• Heavy Equipment: Industrial pumps, compressors, and specialized equipment often rely on this engine’s durability.

Benefits of Rebuilding a Detroit Diesel 12V149 Turbo

• Extended Service Life: A properly rebuilt engine can deliver thousands of additional operating hours.

• Restored Performance: Operators regain horsepower, torque, and efficiency that may have been lost to wear.

• Lower Operating Costs: Rebuilding is significantly less expensive than repowering with a new engine.

• Environmental Responsibility: Extending engine life through rebuilds reduces waste and resource consumption.

Diesel Pro Power Advantage

Global Shipping

We ship overhaul kits and supporting components to more than 180 countries, ensuring operators worldwide can access critical parts quickly.

Proven Customer Base

Over 40,000 satisfied customers trust Diesel Pro Power for Detroit Diesel support, from overhaul kits to gauges and accessories.

Expert Support

Our experienced team ensures you select the correct kit for your specific 12V149 Turbo configuration, avoiding costly errors.

Marine & Industrial Focus

Unlike general suppliers, Diesel Pro Power specializes in continuous-duty diesel engines—delivering parts and kits tailored to real-world demands.