Marine Water Pump

Aftermarket Raw Water Pump & Cooling System Components for Caterpillar 3408 Marine Engines

The Caterpillar 3408 marine engine has earned its place as one of the most trusted heavy-duty engines in commercial marine applications, powering tugboats, fishing vessels, and offshore supply ships. To keep this powerhouse running at peak performance, a properly functioning raw water cooling system is essential. At the center of this system is the aftermarket raw water pump, designed to circulate seawater through heat exchangers and coolers to prevent overheating.

At Diesel Pro Power, we specialize in supplying aftermarket raw water pumps, impellers, zinc anodes, silicone hoses, clamps, and related cooling system parts for the Caterpillar 3408. With over 40,000 satisfied customers worldwide and fast global shipping, we provide marine operators with a dependable source for all critical cooling components.

Aftermarket Raw Water Pumps for Caterpillar 3408

Our aftermarket Caterpillar 3408 raw water pumps are built to deliver reliable performance in demanding marine conditions. Designed as direct replacements for OEM pumps, they provide the same fit and functionality at a more cost-effective price.

• Engineered for continuous-duty marine applications.

• Corrosion-resistant housings and long-lasting seals.

• Available with flanged or clamp-style ports depending on installation.

• Easy to install and service for minimal downtime.

These aftermarket pumps ensure strong seawater circulation, helping to maintain safe engine operating temperatures even under heavy load.

Impellers for Caterpillar 3408 Aftermarket Pumps

No raw water pump is complete without a dependable impeller. Our aftermarket impellers are manufactured from marine-grade bronze and designed to meet or exceed OEM performance standards.

• Available in 20-blade and 32-blade designs for varied flow needs.

• Options include key drive inset impellers for secure shaft engagement.

• Sizes matched to Caterpillar 3408 pump housings, including 5 5/8” diameter units.

• Designed for long service life while maintaining consistent seawater flow.

Routine impeller replacement ensures uninterrupted cooling performance and prevents costly downtime.

Zinc Anodes for Caterpillar 3408 Cooling Systems

To protect against the corrosive effects of saltwater, aftermarket zinc anodes are critical. These sacrificial components safeguard the pump housing, heat exchangers, and other cooling system parts.

• Offered in multiple NPT thread sizes (1/4”, 3/8”, 1/2”, 3/4”, 1 1/4”).

• Designed to fit Caterpillar 3408 cooling system applications.

• Simple installation for scheduled maintenance intervals.

• Prolongs the life of pumps, coolers, and other exposed metal components.

Replacing zincs regularly is an inexpensive way to extend the life of the entire cooling system.

Silicone Coolant Hoses for Caterpillar 3408

Our aftermarket silicone hoses provide a durable, leak-resistant connection for coolant circulation. These hoses are stronger, more heat-resistant, and longer-lasting than traditional rubber options.

• Available in diameters from 1” up to 4”.

• Sold by the foot for flexible installation.

• Multi-ply construction designed for high pressure and marine use.

• Resistant to heat, pressure, and seawater exposure.

Upgrading to silicone hoses ensures maximum reliability for the Caterpillar 3408 cooling system.

Hose Clamps for Caterpillar 3408

Securing hoses properly is just as important as the hoses themselves. Diesel Pro Power stocks a wide selection of aftermarket stainless steel hose clamps for Caterpillar 3408 cooling systems:

• Effective ranges to fit all common hose diameters.

• Stainless steel construction for superior marine corrosion resistance.

• Easy to install and tighten for leak-free performance.

Expansion Tank Gaskets for Caterpillar 3408

Cooling system leaks can be prevented by replacing worn gaskets during routine service. Our aftermarket expansion tank gasket sets are:

• Designed specifically for Caterpillar 3408 cooling systems.

• Heat- and pressure-resistant for marine duty.

• Quick to install during scheduled overhauls.

Gauges & Marine Controls

Monitoring system performance is key to preventing overheating. Diesel Pro Power also offers aftermarket gauges and controls that integrate with Caterpillar 3408 engines:

• Mechanical gauges with alarms.

• Electrical gauges in both 12V and 24V options.

• Marine control systems designed for heavy-duty use.

Why Choose Diesel Pro Power for Aftermarket Caterpillar 3408 Cooling Parts

When it comes to sourcing aftermarket raw water pumps and cooling system components for Caterpillar 3408 marine engines, Diesel Pro Power delivers a combination of value, expertise, and reliability that operators around the world depend on.

• Trusted by 40,000+ Customers Worldwide – Our reputation has been built over decades of serving tugboats, offshore support vessels, fishing fleets, and commercial shipping operations. Customers return to us because they know every aftermarket pump, impeller, and zinc anode has been tested for durability in real marine environments.

• Global Shipping to 180+ Countries – Whether your Caterpillar 3408 engine is running in North America, South America, Europe, Asia, or remote offshore regions, Diesel Pro Power can ship parts quickly and with full tracking. Fast delivery minimizes downtime and ensures your vessel can get back on the water without costly delays.

• Complete Catalog in One Place – Operators no longer have to source parts from multiple vendors. Diesel Pro Power stocks everything needed for Caterpillar 3408 cooling systems in a single catalog: aftermarket raw water pumps, impellers, zinc anodes, silicone hoses, clamps, gaskets, expansion tank kits, and monitoring gauges. This all-in-one approach saves time and guarantees compatibility.

• Exclusive Marine & Industrial Focus – Unlike broad suppliers that divide their attention across automotive or light-duty markets, Diesel Pro Power is dedicated exclusively to heavy-duty diesel engines. Our aftermarket Caterpillar 3408 parts are selected and manufactured with marine conditions in mind—saltwater exposure, high load demands, and continuous-duty cycles.

• Expert Technical Support – Our team provides guidance that goes beyond sales. Whether you need help determining the correct impeller size, scheduling zinc replacement intervals, or understanding pump servicing procedures, Diesel Pro Power offers direct support so operators can make confident maintenance decisions.

By choosing Diesel Pro Power, operators of the Caterpillar 3408 gain a cost-effective aftermarket alternative to OEM parts, without compromising on performance or durability. Every pump, hose, and zinc anode is backed by marine-focused expertise, ensuring reliable cooling, reduced risk of overheating, and long-term protection for one of the most trusted Caterpillar marine engines ever built.