17-1/4in Fan Clutch Fan Reverse Rotation

The 17-1/4in Fan Clutch Fan Reverse Rotation from DERALE is a mechanical cooling solution engineered for vehicles requiring counter-clockwise fan blade rotation. This universal fan clutch assembly addresses a critical cooling need for specific engine configurations—particularly high-performance builds, custom engine swaps, and vintage restorations where standard clockwise fans create air-flow conflicts or clearance issues. Mechanics and enthusiasts choose reverse-rotation fans to maintain optimal coolant circulation without sacrificing underhood real estate or requiring expensive fabrication workarounds.

This 17.25-inch fan features a six-blade design with a dual clutch bolt pattern, delivering efficient heat rejection through a thermostatic fan clutch mechanism that engages only when coolant temperature rises, reducing parasitic engine drag at idle and highway speeds. Constructed from steel and finished in black powder coat, the assembly resists corrosion and withstands thermal cycling typical of high-output engines. The reverse-rotation design ensures that blade geometry works with counter-clockwise spindle motion, pushing air through the radiator core with the same effectiveness as a standard clockwise unit, but tailored for installations where orientation constraints are non-negotiable.

Drivers pursuing engine conversions, twin-turbo installations, or tight engine bay modifications benefit most from this fan clutch when existing cooling configurations limit conventional fan mounting. The universal bolt pattern compatibility simplifies installation across multiple platforms, though verification of fan shroud fitment and blade clearance remains essential before purchase. At 5.16 pounds, the assembly balances thermal load capacity with minimal reciprocating mass, making it ideal for both street and track applications where reliability and cooling performance cannot be compromised.