Detroit Diesel 16V149 Raw Water Pump & Cooling System Components

The Detroit Diesel 16V149 non-turbo marine engine is a powerhouse used in commercial vessels, offshore equipment, and heavy-duty marine applications. To maintain reliable operation, its raw water pump and cooling system components play a crucial role in regulating engine temperature, protecting against overheating, and ensuring continuous-duty performance in harsh marine environments. Below is a detailed catalog of raw water pumps and related cooling components specifically for the Detroit Diesel 16V149.

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Marine Raw Water Pump for Detroit Diesel 16V149

The raw water pump is the heart of the cooling system, pulling seawater into the heat exchangers, oil coolers, and fuel coolers. This seawater removes heat from the engine, preventing damage caused by high operating temperatures.

• Marine Water Pump for Detroit Diesel 71, 92, and 149 Series Engines
  Bidirectional design (functions turning right or left)
  Port Type: 2” Flange
  Impeller Height: 4 ½”
  Non-splined shaft for durability under continuous load.

This pump is engineered to handle the extreme flow requirements of the 16V149 while withstanding long-term exposure to seawater.

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Marine Water Pump Repair Kits

Repair kits are available to restore worn pumps, extending service life without requiring a full replacement.

• Raw Water Pump Repair Kit with Shaft
  Compatible with Detroit Diesel 8V149, 12V149, and 16V149.
  Includes replacement shaft and internal components for pumps with 4-screw covers and 4 ½” impellers.

• Raw Water Pump Repair Kit without Shaft
  A cost-effective option when the shaft is in good condition. Designed for 4 ½” impeller pumps, includes wear components like seals, gaskets, and bearings.

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Marine Water Pump Impellers & Related Parts

The impeller is a critical rotating component that drives seawater through the cooling system.

• Impeller for Detroit Diesel Marine Engines
  Diameter: 4 ½”
  Constructed from bronze for corrosion resistance.

• Impeller Puller Tool
  Specialized tool for safe impeller removal during service. Prevents shaft or housing damage.

• Cam for Impeller
  Designed for 4 ½” diameter impellers, ensures efficient water flow inside the pump housing.

• Wear Plate (Stainless Steel)
  Provides a smooth sealing surface for impeller vanes and prevents housing wear. Built for durability in corrosive environments.

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Gaskets & Seals for Raw Water Pumps

Proper sealing is essential to prevent leaks and maintain suction pressure.

• Flywheel to Salt Water Pump Gasket
  Ensures a tight connection between pump and engine.

• Marine Water Pump Gaskets
  Each pump requires two—one for water inlet and one for outlet connections.

• Raw Water Pump Shaft Seal
  Protects against leaks along the pump shaft.

• Seal for High-Capacity Marine Pumps
  Heavy-duty seal designed for the 16V149’s high-volume seawater pump.

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Thermostats & Cooling Controls

Thermostats regulate coolant flow to maintain consistent engine operating temperatures.

• Thermostat (170 Degrees)
  Standard for Detroit Diesel marine applications, ensures optimal fuel efficiency and power.

• Thermostat (160 Degrees)
  Alternative option depending on climate and operating conditions.

• Thermostat Seal
  Ensures leak-free installation between housing and thermostat.

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Heat Exchangers & Related Components

Heat exchangers transfer heat from the engine coolant to seawater, ensuring the engine remains within safe operating temperatures.

• Rebuilt Heat Exchanger Core
  For Detroit Diesel 12V71, 16V71, 12V92, 16V92, and 16V149 engines.

• Heat Exchanger Gasket
  Ensures a reliable seal between exchanger and housing.

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Zinc Anodes

Zinc anodes protect the raw water cooling system from galvanic corrosion caused by seawater exposure.

• Marine Zinc Anode with Brass Plug
  Size: NPT 1/8” plug, 2” zinc length.
  Installed in coolers and heat exchangers to extend service life.

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Radiator Caps & Necks

Maintaining proper system pressure prevents coolant boiling and ensures efficient circulation.

• Detroit Diesel Radiator Cap
  Pressure rating: 7 lbs.

• Radiator Cap Neck
  Inside Diameter: 1.63”
  Outside Diameter: 1.69”

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Silicone Coolant Hoses

High-quality silicone hoses provide flexibility, heat resistance, and durability. Available in multiple diameters for different sections of the 16V149 cooling system:

• Sizes: 1”, 1 ¾”, 1 ⅞”, 2”, 2 ⅛”, 2 ¼”, 2 ⅜”, 2 ½”, 2 ¾” inside diameters.

• Sold per foot for custom installation.

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Additional Maintenance Supplies

• Detroit Diesel Green Engine Paint
  Protects against corrosion and provides OEM appearance. (Can only be shipped by ground shipping within the US and Canada.)

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Why Diesel Pro Power for Detroit Diesel 16V149 Cooling Parts

Choosing the right supplier is as important as selecting the right part. Diesel Pro Power is trusted worldwide for Detroit Diesel cooling components, including the 16V149:

• Trusted by 40,000+ Customers Worldwide – Serving commercial fleets, tugboats, and offshore operators.

• Global Shipping to 180+ Countries – Fast, trackable deliveries to minimize downtime.

• All-in-One Catalog – Marine pumps, impellers, gaskets, seals, thermostats, and heat exchangers in one place.

• Exclusive Marine & Industrial Focus – Dedicated to heavy-duty engines like the Detroit Diesel 149 series.

• Expert Technical Guidance – Support available to help with correct part selection, installation, and troubleshooting.