Help regulate cooling-fan airflow across the radiator with the Hayden Standard Rotation Severe Duty Thermal Fan Clutch, part number 2797. It fits many vehicles, among them the 1988-1991 Chevrolet C1500 4.3L / 5.0L / 5.7L / 7.4L, 1988-1991 Chevrolet K1500 4.3L / 5.0L / 5.7L and 1975-1987 Ford F-150 5.0L / 5.8L / 6.6L. See the Buyer's Guide tab for every application and engine code.
This engine cooling fan clutch is a thermal, non-electronic unit. It is designed to engage the fan more firmly as underhood temperature rises and to let it slip when the engine runs cool. Hayden engineers and tests its cooling products to take the heat, and it draws on more than 45 years of automotive cooling experience.
- Built by application: Hayden designs, tests and builds it for the listed applications, with OE performance, fit and appearance.
- Precision machined: The body is aluminum with a raw aluminum finish.
- Out-of-box installation: It is ready to install as delivered.
- Severe-duty rating: It is a severe-duty and truck fan drive design that meets or exceeds OEM requirements.
Specifications: standard rotation · 6.45 in overall diameter · flange mount with 4 mounting holes · 5/16-18 bolt thread · one per application · country of origin: Mexico. Mounting hardware is not included. Consult the vehicle service information for the correct fasteners and whether the originals may be reused.
Signs a fan clutch may need replacing include overheating at idle or in slow traffic, weak A/C at idle, a fan that roars constantly, fluid leaking from the clutch, or wobble at the fan hub. Diagnose the cause first. If the clutch is at fault, the Hayden 2797 replaces it.
