Detroit Diesel 12V149 Non-Turbo – Marine Raw Water Pump & Cooling Components

Keeping your Detroit Diesel 12V149 Non-Turbo engine running at peak performance depends heavily on a reliable raw water pump and related cooling components. The 12V149 is a powerhouse built for heavy-duty marine applications, but its durability relies on consistent seawater circulation through the heat exchanger and aftercoolers. This section provides a complete catalog of raw water pumps, repair kits, impellers, seals, gaskets, thermostats, zincs, and coolant hoses designed specifically for the 12V149 Non-Turbo and other Detroit Diesel 149 Series marine engines.

Marine Raw Water Pump for Detroit Diesel 12V149 Non-Turbo

The raw water pump is the heart of your 12V149’s cooling system. It draws seawater into the engine’s heat exchanger, allowing critical temperature regulation under heavy load. For the 12V149 Non-Turbo, Diesel Pro Power offers a bidirectional pump with a 2” flange port type, 4 ½” impeller height, and a non-splined shaft. This rugged design ensures long service life in demanding environments.

Water Pump Repair Kits for Detroit Diesel 12V149

Rebuild solutions extend the life of your existing pump while reducing downtime and cost. Our marine water pump repair kit with shaft is engineered for Detroit Diesel 8V149, 12V149, and 16V149 engines. It fits pumps with a 4-screw cover and 4 ½” impeller, restoring proper circulation without requiring a full replacement.

For customers who prefer reusing their existing shaft, Diesel Pro also offers a repair kit without shaft, tailored for 4 ½” impeller pumps, ensuring cost-efficient maintenance.

Impellers & Impeller Components

A properly functioning impeller is critical for maintaining seawater flow. Diesel Pro Power stocks the 4 ½” impeller built for Detroit Diesel 12V149 pumps. Constructed from durable marine-grade materials, this impeller withstands the high demand of commercial and industrial duty cycles.

Supporting components include:

• Impeller Puller – Simplifies removal during routine maintenance or emergency repairs.

• Cam for 4 ½” Impeller – Ensures correct impeller operation inside the pump housing.

• Wear Plate (Stainless Steel) – Protects pump housing and extends impeller life.

Gaskets & Seals for Raw Water Pumps

Preventing leaks is essential in marine cooling systems. Diesel Pro offers:

• Gasket, Flywheel Housing to Salt Water Pump – Ensures a tight seal at the pump-to-housing interface.

• Marine Water Pump Gasket (Inlet & Outlet) – Each pump requires two gaskets to properly seal water flow connections.

• Seal for High Capacity Water Pump – Keeps seawater from leaking into the pump shaft.

• Marine Water Pump Shaft Seal – Protects pump shaft integrity under continuous duty.

Thermostats & Related Components

Temperature control is key to avoiding engine overheating. Available thermostat options for the Detroit Diesel 12V149 include:

• 170° Thermostat – Ideal for standard operating conditions.

• 160° Thermostat – Suited for cooler operating environments.

• Thermostat Seals – Maintain proper fit and prevent leaks during thermostat replacement.

Heat Exchangers & Gaskets

For engines that require more extensive cooling system maintenance, Diesel Pro Power provides:

• Rebuilt Heat Exchanger Cores – Designed for Detroit Diesel V71, V92, and V149 marine engines, fully restored to OEM performance.

• Heat Exchanger Gaskets – Specifically fitted for Detroit Diesel 12V71, 16V71, 12V92, 16V92, and compatible with 149 Series applications.

Zinc Anodes & Radiator Components

Zincs are critical for preventing galvanic corrosion inside your cooling system. We carry:

• Zinc Anodes with Brass Plug (NPT 1/8”) – Protects fuel and oil coolers from saltwater corrosion.
  Additional radiator components include:

• 7 lb Radiator Cap – Maintains proper pressure within the cooling system.

• Radiator Cap Neck – Ensures compatibility and leak-free performance with Detroit Diesel radiator caps.

Coolant Hoses for Marine Applications

Diesel Pro Power offers silicone coolant hoses in multiple diameters, ranging from 1” to 3” ID, all cut by the foot for flexibility. These high-strength hoses withstand continuous exposure to heat, vibration, and saltwater, making them ideal for Detroit Diesel 12V149 Non-Turbo cooling systems.

Why Choose Diesel Pro Power for Detroit Diesel 12V149 Cooling Parts

When sourcing raw water pump and cooling system components for the Detroit Diesel 12V149 Non-Turbo, reliability and expertise are critical. The 12V149 is a powerhouse engine designed for continuous-duty operation in some of the harshest marine and industrial environments. To keep it running at peak performance, operators must partner with a supplier that not only delivers parts quickly but also understands the unique demands of these heavy-duty engines. Diesel Pro Power has built its reputation by serving 40,000+ satisfied customers worldwide, including commercial shipping fleets, tugboat operators, and offshore service companies that cannot afford downtime.

Global Reach with Fast Delivery

Marine operations often span the globe, and when a vessel is down, every hour lost can mean costly delays. That is why Diesel Pro Power ships to more than 180 countries with fast, trackable delivery. Whether you are managing a vessel in North America, South America, Europe, Asia, or remote island operations, parts can be shipped directly to your location with confidence. Our streamlined logistics minimize downtime and ensure that critical raw water pump components, seals, gaskets, and thermostats arrive exactly when needed.

All-in-One Catalog for Complete Cooling Solutions

One of the biggest advantages of choosing Diesel Pro Power is our comprehensive catalog. Instead of juggling multiple suppliers, operators can source everything for their Detroit Diesel 12V149 cooling system from one trusted partner. From raw water pumps and impellers to wear plates, thermostat seals, zinc anodes, and silicone coolant hoses, every component is available in one place. This saves time, reduces ordering errors, and ensures full compatibility across all system components.

Specialized Focus on Marine & Industrial Engines

Unlike general automotive suppliers, Diesel Pro Power is dedicated exclusively to heavy-duty marine and industrial diesel engines. Our catalog is tailored for Detroit Diesel engines like the 12V149, not diluted with unrelated automotive parts. This focus ensures that every product is designed for continuous operation under high loads, high temperatures, and corrosive saltwater environments. Customers benefit from precision-fit components that match OEM standards and perform under the exact conditions the 12V149 was engineered to handle.

Expert Technical Support You Can Count On

Even the most experienced operators occasionally face questions about part compatibility or installation. That is why Diesel Pro Power provides expert technical support to guide you through the process. Our team can help determine the correct impeller size for your raw water pump, advise on gasket configuration for a leak-free seal, and provide guidance on whether a pump should be rebuilt or replaced. This level of support reduces guesswork and ensures that every repair or maintenance job restores your Detroit Diesel 12V149 to full working condition.

The Diesel Pro Power Advantage

By combining global reach, a complete catalog, marine-focused expertise, and unmatched technical support, Diesel Pro Power has become the supplier of choice for operators who demand reliability. When you choose Diesel Pro Power for your Detroit Diesel 12V149 cooling system components, you are not just buying parts—you are investing in confidence, efficiency, and the long-term health of your engine.