Cummins ISX Single Cam Freshwater Pump & Cooling System Parts Catalog

The Cummins ISX Single Cam is a high-performance diesel engine trusted in marine and industrial applications around the world. To ensure long service life and optimal performance, keeping the engine’s cooling system in peak condition is essential. At Diesel Pro Power, we provide a complete catalog of freshwater pumps, thermostats, belt tensioners, coolant hoses, clamps, and related cooling components designed specifically for the Cummins ISX Single Cam and compatible QSX engines.

With over 40,000 satisfied customers worldwide, Diesel Pro Power has become the go-to source for reliable Cummins replacement parts. Every product in this catalog is backed by our commitment to fast shipping, excellent service, and guaranteed compatibility.

Engine Cooling System Overview for Cummins ISX Single Cam

The Cummins ISX Single Cam utilizes a dual-loop cooling system that includes both raw water and freshwater circuits. The freshwater pump plays a critical role by circulating coolant through the block, cylinder heads, and heat exchangers, ensuring proper engine temperatures are maintained during demanding operating conditions.

The major components of the ISX Single Cam cooling system include:

• Freshwater Pump – Circulates coolant within the engine.

• Thermostat & Seal – Regulates coolant flow based on engine temperature.

• Belt Tensioner – Maintains proper drive belt alignment and tension.

• Coolant Hoses & Clamps – Connect and secure coolant lines throughout the system.

• Temperature Switch & Gauges – Provide monitoring and protection against overheating.

Freshwater Pumps for Cummins ISX Single Cam

Freshwater pumps for the ISX Single Cam are available in different pulley configurations to accommodate various fan setups and engine applications. These pumps are precision-engineered to deliver consistent coolant flow and long-lasting reliability.

Freshwater Pump – 10 Rib Pulley

• Designed for engines with fan centers ranging 8.5" to 9.75".

• Rugged construction ensures durability in heavy marine and industrial environments.

• Direct replacement pump for Cummins ISX and QSX engines.

Freshwater Pump – 12 Rib Pulley

• Supports larger fan centers ranging 8.5" to 20.25".

• Built to OEM specifications for long service life.

• Perfect for high-demand applications where increased cooling is required.

Both freshwater pump options are manufactured for precise fit and optimal coolant circulation, helping protect your ISX engine from overheating and unnecessary wear.

Thermostat & Thermostat Seal for Cummins ISX Single Cam

A properly functioning thermostat ensures that your Cummins engine reaches and maintains its optimal operating temperature.

• Thermostat – Regulates coolant flow between the engine block and heat exchangers.

• Thermostat Seal – Provides a leak-free fit when replacing the thermostat.

Replacing these components during routine maintenance prevents overheating, poor fuel efficiency, and premature wear on internal engine components.

Belt Tensioners for Cummins ISX Single Cam

The belt tensioner ensures that the serpentine belt driving the freshwater pump and other accessories maintains correct tension. Without proper tension, belts can slip or wear prematurely.

• Tensioner for 2003–2014 engines – Fits ISX and QSX models manufactured during this period.

• Tensioner for 2015 and newer engines – Updated design for later production engines.

These belt tensioners are engineered for precise alignment, reduced vibration, and long service life.

Temperature Switch for Cummins ISX Engines

The temperature switch is an essential safety device that prevents overheating.

• Compatible with Cummins ISX, QSX, ISM, and QSM engines.

• Closes at 205°F to activate alarms or shutdown systems.

• Thread size: 1/2" NPT for secure installation.

This switch ensures reliable engine protection, helping operators avoid costly repairs.

Coolant Hoses for Cummins ISX Single Cam

We offer a wide range of high-quality silicone coolant hoses designed to withstand extreme temperatures and resist deterioration from coolant fluids. Each hose is available in convenient 1-foot lengths with multiple inside diameters.

Available Hose Sizes

• 3/4" ID

• 1" ID

• 1 3/4" ID

• 1 7/8" ID

• 2" ID

• 2 1/8" ID

• 2 1/4" ID

• 2 3/8" ID

• 2 1/2" ID

• 2 3/4" ID

• 3" ID

• 3 1/2" ID

• 4" ID

Silicone hoses are stronger and more durable than rubber alternatives, offering superior flexibility and heat resistance.

Hose Clamps for Cummins ISX Single Cam Cooling System

Proper hose clamping ensures leak-free operation of the cooling system. Diesel Pro Power provides clamps in multiple sizes to match different hose diameters.

Clamp Options

• Range: 9/16" – 1-1/16"

• Range: 1" – 1.5"

• Range: 11/16" – 1-1/4"

• Range: 13/16" – 1-3/4"

• Range: 1-5/16" – 2-1/4"

• Range: 1-9/16" – 2-1/2"

• Range: 2-5/16" – 3"

• Range: 2-7/8" – 3.5"

These clamps are engineered for high-pressure coolant and fuel lines, ensuring secure connections even under vibration and heavy duty conditions.

Radiator Cleaner for Cooling System Maintenance

To maximize the performance of your Cummins ISX cooling system, periodic cleaning is essential. Radiator cleaner products help remove deposits, scale, and corrosion that can restrict coolant flow.

• Available for ground shipping within the USA and Canada.

• Protects engine cooling components from buildup and premature failure.

Gauges & Monitoring Equipment

For complete system visibility, we also carry mechanical and electrical gauges designed for 12-volt and 24-volt systems. Options include:

• Mechanical gauges – Reliable, straightforward monitoring.

• Mechanical gauges with alarms – Added safety through built-in warnings.

• Electrical gauges (12V & 24V) – Suitable for modern installations with electronic monitoring systems.

Monitoring coolant pressure and temperature in real-time helps ensure safe operation and early detection of cooling system issues.

Why Choose Diesel Pro Power for Cummins ISX Cooling Parts?

• Extensive Inventory – From freshwater pumps to clamps, we stock all essential ISX cooling components.

• Worldwide Shipping – Trusted by customers in over 180 countries.

• Proven Experience – More than 40,000 satisfied customers rely on us.

• Guaranteed Compatibility – All parts are designed to meet Cummins OEM standards.

• Fast Service – Orders are processed quickly to minimize downtime.