Parts for Caterpillar C9 – Engine Water Pump Section

The Caterpillar C9 engine is widely used in heavy-duty applications including construction machinery, power generation units, and marine vessels. A reliable cooling system is critical to keeping this engine operating efficiently, and at the heart of that system is the engine water pump. By circulating coolant through the block, cylinder head, and radiator or heat exchanger, the water pump prevents overheating, maintains stable operating temperatures, and ensures long-term durability of the engine.

At Diesel Pro Power, we provide a full range of Caterpillar C9 water pumps, silicone coolant hoses, clamps, and related components—all designed to deliver dependable performance and long service life.

Engine Water Pumps for Caterpillar C9

Engine Water Pump for Caterpillar C9

This pump is built specifically for the Caterpillar C9 engine. It provides consistent coolant flow under all operating conditions, from heavy equipment in construction and mining to commercial marine propulsion systems. With a durable impeller and housing, it withstands high-heat, high-load environments where the C9 often operates.

Engine Water Pump for Caterpillar 3126E and C9

Many Caterpillar C9 engines were installed as successors to the 3126E platform. This water pump is designed to work with both engine models, making it a perfect choice for fleets or facilities with mixed Caterpillar equipment. For C9 owners, it provides OEM-quality performance and ensures proper cooling capacity.

Engine Water Pump for Caterpillar C7 and C9

This crossover water pump supports the C9 while also fitting the smaller C7. For operations standardized around Caterpillar’s mid-size engines, this pump offers flexibility while still guaranteeing the flow rates required for the larger C9 engine.

Silicone Coolant Hoses for Caterpillar C9

High-quality silicone coolant hoses are essential for the Caterpillar C9 cooling system. Unlike standard rubber, silicone resists cracking, heat damage, and coolant chemical breakdown. Diesel Pro Power offers a complete range of hose diameters to match every C9 application.

• 1” Inside Diameter Hose – Used for small coolant connections and return lines.

• 3/4” Inside Diameter Hose – Common in auxiliary coolant circuits.

• 1 3/4” to 2 1/2” Inside Diameter Hoses – Standard main coolant routing sizes for the C9.

• 2 3/4” to 3 1/2” Inside Diameter Hoses – Larger hoses designed for radiator and heat exchanger connections.

• 4” Inside Diameter Hose – Heavy-duty hose size for primary coolant lines in marine and industrial C9 installations.

Each hose is sold by the foot, allowing you to cut to exact lengths for precise installation.

Clamps for Caterpillar C9 Cooling System

A water pump or hose can only function properly if secured with the right clamp. Diesel Pro Power stocks a wide selection of heavy-duty clamps designed for Caterpillar C9 cooling systems.

• Small Clamps (9/16” – 1 1/16”) – For smaller return lines and auxiliary circuits.

• Medium Clamps (11/16” – 1 3/4”) – For most common C9 coolant hose connections.

• Large Clamps (2 5/16” – 3”) – For heavy-duty applications requiring larger diameter hoses.

These clamps are designed to maintain constant pressure under vibration, thermal expansion, and heavy load operation—ensuring leak-free performance.

Gauges for Caterpillar C9

Monitoring your cooling system is just as important as maintaining it. Diesel Pro Power carries a range of mechanical and electrical gauges specifically suited for Caterpillar C9 engines. Options include standard mechanical gauges, alarm-equipped gauges for added safety, and electrical gauges available in both 12V and 24V configurations.

Why Buy Caterpillar C9 Water Pumps & Cooling Parts from Diesel Pro Power

• Trusted by 40,000+ Customers Worldwide – Diesel Pro Power has earned the trust of operators across industries and around the globe.

• OEM-Quality Fit and Reliability – Every Caterpillar C9 water pump, hose, and clamp is precision built for exact compatibility.

• Fast Global Shipping – We minimize downtime by shipping quickly to customers worldwide.

• Dedicated Caterpillar C9 Catalog – Eliminate guesswork with a catalog tailored specifically to the C9 engine.

• Expert Support – Our team can help you identify the right cooling parts for your C9 application.