US Motor Works MCK1035 Engine Water Pump with Fan Clutch

Cooling System Water Pump and Fan Clutch Kit

US Motor Works MCK1035 is an engine water pump with fan clutch kit for vehicles that rely on coordinated coolant and airflow control. This matched replacement set is built for applications where the water pump and fan clutch should be serviced together to protect cooling performance and engine life.

Compatible With Chevrolet C2500, Chevrolet C3500, Chevrolet Express 3500, Chevrolet K2500, Chevrolet K3500, GMC C2500, GMC C3500, GMC K2500, GMC K3500, GMC Savana 3500, and related heavy-duty truck and van applications from 1988-2000.

• Engine water pump and fan clutch replacement kit
• Designed and tested to meet or exceed original equipment specifications
• Precision-machined components for consistent fit and cooling performance
• Addresses both coolant circulation and engine-driven airflow in one service
• US Motor Works part number MCK1035

Why Replace Both Components

The water pump moves coolant through the engine and radiator, while the fan clutch controls airflow through the cooling stack. When one component wears out, it can place extra load on the other, so replacing both at the same time helps restore balanced cooling system operation. This is a practical choice for Chevrolet C2500 and GMC K3500 trucks, Chevrolet C3500 and GMC C3500 chassis applications, and Chevrolet Express 3500 or GMC Savana 3500 vans that need dependable temperature control under load.

Common Problems This Kit Can Address

• Coolant circulation loss from a worn water pump
• Reduced fan engagement from a failing fan clutch
• Engine overheating during towing or stop-and-go driving
• Noise or vibration from cooling system wear
• Repeat repairs when only one cooling component is replaced

Installation Notes

Inspect the radiator, hoses, drive belt, thermostat, and pulley surfaces before installation. Flush contaminated coolant, clean mating surfaces, and verify proper belt routing and fan clearance during reassembly. Follow the vehicle service manual for torque values and bleeding procedures.

Quality Assurance

US Motor Works designs and tests this water pump and fan clutch kit to meet or exceed original equipment specifications. The MCK1035 is built as a matched cooling system service part for long-term engine cooling reliability.