Caterpillar D330 Marine Water Pump and Cooling System Catalog

Keeping your Caterpillar D330 engine cool is one of the most important aspects of ensuring reliable performance at sea. In marine applications, where engines are constantly exposed to heavy loads and harsh saltwater environments, the raw water pump and associated cooling system components play a critical role. The following catalog is designed specifically for Caterpillar D330 operators and includes aftermarket raw water pumps, impellers, zinc anodes, silicone coolant hoses, and service tools—all curated for durability, performance, and ease of maintenance.

Marine Water Pump for Caterpillar D330

The heart of the Caterpillar D330 cooling system is its raw water pump. This pump draws seawater into the engine’s cooling circuit, circulating it through heat exchangers to maintain safe operating temperatures.

• Design and Fitment: Built to fit the Caterpillar D330 along with related 3304 and 3306 variants.

• Port Size: 1 1/2” flange connection for reliable and secure fit.

• Heavy-Duty Build: Designed for marine conditions where corrosion resistance and long-term reliability are essential.

• Aftermarket Advantage: Offered as a cost-effective, reliable alternative to OEM pumps without compromising on performance.

With proper maintenance, the marine water pump ensures consistent seawater flow, reducing risks of overheating and extending engine life.

Impellers for Caterpillar D330 Marine Water Pumps

The impeller is the most frequently serviced part of the raw water pump. Over time, rubber impellers wear down or crack, reducing water flow. Routine replacement is essential for uninterrupted cooling.

• Construction: Flexible rubber blades for high water volume transfer.

• Drive: 12-blade design with a 12-spline drive for secure fit.

• Dimensions: Approximately 3 3/4” in diameter by 2 1/2” in height, optimized for the Caterpillar D330 and compatible marine pumps.

• Maintenance Tip: Always carry a spare impeller onboard to avoid unexpected downtime.

Impeller Puller for Caterpillar D330

Removing a worn impeller without damaging the pump housing can be difficult. The dedicated impeller puller makes this process quick and efficient.

• Compatibility: Works with Caterpillar, Detroit Diesel, Cummins, and Volvo Penta pumps.

• Durability: Built from heavy-duty metal to withstand repeated use.

• Efficiency: Reduces time and effort compared to makeshift methods.

Having this tool onboard ensures smoother maintenance and extends the life of the pump housing.

Zinc Anodes for Caterpillar D330 Marine Engines

Saltwater environments expose marine cooling systems to galvanic corrosion, which can damage pumps, heat exchangers, and other metal components. Zinc anodes serve as sacrificial protectors, corroding first to safeguard critical parts.

Available Zinc Anode Options

• Small Anodes (1/4” NPT): Ideal for compact installations, available in 1 1/2” and 2 1/2” lengths.

• Medium Anodes (3/8” to 1/2” NPT): Suitable for standard cooling circuits; lengths range from 1 5/8” to 3”.

• Large Anodes (3/4” to 1 1/4” NPT): Designed for heavy-duty applications, with diameters up to 1 1/4” for maximum protection.

Maintenance Tip: Inspect zincs every 3–6 months, depending on operating conditions. Replace when more than 50% deteriorated.

Silicone Coolant Hoses for Caterpillar D330

In addition to seawater lines, the Caterpillar D330 relies on freshwater coolant hoses for circulating antifreeze mixtures through its closed-loop system. Silicone hoses are far superior to standard rubber hoses in marine conditions.

Key Benefits of Silicone Hoses

• Durability: Resistant to cracking, ozone, and salt exposure.

• Temperature Range: Performs in both extreme cold and heat.

• Longevity: Outlasts traditional rubber hoses, reducing maintenance intervals.

Available Hose Sizes for Caterpillar D330

• 1” ID – Ideal for small diameter coolant lines.

• 1 3/4” ID – Commonly used in medium-sized coolant loops.

• 1 7/8” ID – Slightly oversized lines for higher flow systems.

• 2” ID – Heavy-duty connections for primary coolant circulation.

Hoses are sold per foot, making it easy to order exact lengths for replacements or upgrades.

Why Marine Operators Trust Diesel Pro Power for Caterpillar D330 Cooling Parts

Diesel Pro Power has become the preferred supplier for Caterpillar marine engine operators worldwide by offering reliable aftermarket parts, global shipping, and expert technical support.

• 40,000+ Customers Worldwide: Trusted by tugboat fleets, offshore operators, and private yacht owners.

• Global Shipping: Delivery to over 180 countries with fast, trackable logistics.

• Comprehensive Catalog: Raw water pumps, impellers, zincs, hoses, clamps, gaskets, and gauges available in one place.

• Exclusive Marine & Industrial Focus: Unlike automotive suppliers, Diesel Pro specializes in heavy-duty marine engines.

• Expert Support: Guidance on impeller sizing, zinc replacement schedules, and troubleshooting water pump issues.

By sourcing your Caterpillar D330 cooling system parts from Diesel Pro Power, you gain a reliable partner dedicated to keeping your vessel running at peak efficiency with minimized downtime.