Wilwood HD 48 Curved Vane Spec-37 Rotor - LH - 1.25" Width - 12.19" Diameter - 8 x 7" Bolt Circle - .316" Hole - 12.7 lbs. R030015M smooth operation and less localized

smooth operation and less localized stress

Square Bore to Ford Autolite 4-Barrel

Solenoid is driven directly from a Pulse Width Modulated (PWM) ECU output

Polyol ester base stocks provide more stability and film strength when exposed to excess fuel dilution

Wilwood HD 48 Curved Vane Spec-37 Rotor - LH - 1.25" Width - 12.19" Diameter - 8 x 7" Bolt Circle - .316" Hole - 12.7 lbs. R030015M smooth operation and less localizedWilwood's HD 48 Curved Vane Spec 37 rotors are manufactured from a proprietary iron alloy developed to withstand extreme temperatures with the highest possible degree of resistance against distortion, warping, cracking, and wear. The formulation for this alloy is a derivative of technology and materials that were significant in the development of the extreme duty military spec rotors that are manufactured by Wilwood. Every Spec 37 rotor is precision