Parts for Detroit Diesel 8V149 Turbo – Marine Raw Water Pump Section

The Detroit Diesel 8V149 Turbo is a powerhouse marine engine designed for heavy-duty operations in tugboats, offshore supply vessels, and commercial fleets. To keep this engine performing at its peak, the raw water pump and associated cooling components are critical. The raw water pump pulls in seawater and circulates it through heat exchangers, oil coolers, and aftercoolers, ensuring the 8V149 Turbo maintains safe operating temperatures under continuous load.

Below you’ll find a complete catalog of raw water pump parts and accessories engineered specifically for the Detroit Diesel 8V149 Turbo. Each component is designed for durability in corrosive marine environments and built to withstand the demands of high-horsepower operation.

Marine Raw Water Pump for Detroit Diesel 8V149 Turbo

The heart of the cooling system, this heavy-duty pump provides the seawater circulation required to protect the 8V149 Turbo.

• Bidirectional Operation – Designed to rotate either right or left, simplifying installation.

• Port Type – 2” flange for secure marine-grade connections.

• Impeller Size – 4 ½ inch height ensures maximum seawater flow.

• Shaft Type – Non-splined for consistent, reliable performance.

This pump is built to deliver the volume of seawater necessary to maintain optimal temperatures for the 8V149 Turbo under heavy load.

Raw Water Pump Repair Kit with Shaft for 8V149 Turbo

Over time, seals and shafts wear, reducing pump efficiency. This repair kit restores the pump to full working condition without requiring a complete replacement.

• Includes shaft, seals, and wear components.

• Compatible with 8V149 Turbo pumps featuring a 4-screw cover and 4 ½” impeller.

• Engineered for easy installation, extending pump service life.

A practical solution for operators who demand performance while controlling maintenance costs.

Impeller for Detroit Diesel 8V149 Turbo Raw Water Pump

The impeller is the core of the pump, responsible for seawater movement.

• Size – 4 ½ inch diameter impeller for high-volume flow.

• Material – Marine-grade bronze for corrosion resistance in seawater applications.

• Design – Precision-balanced blades for smooth operation and reduced wear.

Replacing impellers at regular intervals ensures the 8V149 Turbo avoids overheating. Keeping a spare impeller on board is highly recommended.

Key Supporting Components for the 8V149 Turbo Cooling System

Drain Cock Fitting

• Provides a simple way to drain seawater from the pump housing for maintenance or winterization.

Impeller Puller Tool

• Specialized tool that makes impeller replacement faster and prevents damage to pump components.

Pump Gaskets

• Gaskets for flywheel housing and pump inlets/outlets ensure a leak-free seal during operation.

• Each raw water pump requires two precision gaskets for proper installation.

Cam for 4 ½” Impeller Pumps

• Directs seawater flow within the pump housing.

• Maintains internal clearance for optimal pump pressure.

Thermostats and Related Components

170° Thermostat

• Maintains the correct engine operating temperature by controlling coolant flow.

• Prevents overheating under load and ensures fuel efficiency.

Thermostat Seal

• High-strength seal to prevent leaks around the thermostat housing.

These components help the 8V149 Turbo remain in its ideal operating range, protecting against thermal stress.

Seals, Wear Plates, and Pump Protection

High-Capacity Pump Seal

• Keeps seawater contained within the pump housing.

• Protects against shaft leakage.

Stainless Steel Wear Plate

• Shields the pump casing from abrasion and erosion caused by seawater circulation.

• Designed for use with 4 ½” impellers on the 8V149 Turbo.

Shaft Seal

• Provides critical sealing where the shaft exits the pump housing, ensuring long service life.

Additional Cooling System Essentials

Zinc Anodes

• Protect the cooling system from galvanic corrosion.

• Threaded brass plug with 2” zinc core for easy replacement.

Radiator Cap & Neck Assembly

• Small-cap design rated at 7 lbs pressure.

• Maintains cooling system pressure balance for consistent operation.

Repair Kit Without Shaft

• For operators needing only seals and gaskets, this kit provides a cost-effective rebuild solution.

Hoses and Clamps for 8V149 Turbo Cooling

The cooling system of the 8V149 Turbo requires durable hoses to handle high flow rates and temperatures. Diesel Pro Power offers:

• Silicone Coolant Hoses – Ranging from 1” to 4” inside diameter, sold per foot. Resistant to heat, chemicals, and saltwater vapor.

• Stainless Steel Hose Clamps – Available in a full range of sizes to ensure leak-free connections. Corrosion-resistant and designed for marine service.

Why Choose Diesel Pro Power for Detroit Diesel 8V149 Turbo Cooling Parts

The raw water pump is the lifeline of the Detroit Diesel 8V149 Turbo, ensuring seawater flows steadily through heat exchangers, aftercoolers, and coolers to maintain safe operating temperatures. Without dependable pump performance, even the most powerful engines can suffer overheating and downtime. For fleets and operators who demand absolute reliability, Diesel Pro Power is the trusted source.

• Trusted by 40,000+ Customers Worldwide – Commercial tugboat fleets, offshore support vessels, and ferry operators rely on Diesel Pro Power for consistent performance. Our track record of supplying quality 8V149 Turbo cooling parts has made us the go-to partner for marine professionals across the globe.

• Global Reach with Fast, Trackable Shipping – We deliver to over 180 countries, ensuring parts arrive when and where they are needed. Whether your 8V149 Turbo is powering a vessel in a busy harbor or an offshore platform, we minimize downtime with efficient logistics.

• Complete Catalog in One Place – From the main raw water pump to every supporting component—impellers, seals, wear plates, thermostats, zinc anodes, gaskets, and hoses—we provide everything required for a complete 8V149 Turbo cooling system rebuild or repair. Operators save time by sourcing all components from a single, reliable catalog.

• Exclusive Marine and Industrial Focus – Diesel Pro Power is dedicated exclusively to heavy-duty diesel engines. Our catalog is tailored to engines like the Detroit Diesel 8V149 Turbo, ensuring you’re not sifting through unrelated automotive parts. Every item is designed for the demanding environment of saltwater and continuous-duty operation.

• Expert Technical Support – Our team provides guidance on every detail, from impeller sizing and gasket selection to troubleshooting pump leaks or identifying the correct wear plate. We help operators avoid costly mistakes and ensure each part is installed correctly for maximum efficiency.

With Diesel Pro Power, operators of the Detroit Diesel 8V149 Turbo gain more than just access to parts—they gain a partner committed to keeping their engines running at peak performance. By combining global reach, a specialized catalog, and technical expertise, we make maintaining the cooling system of the 8V149 Turbo straightforward, efficient, and reliable.