Overrun pulleys (OAPs) eliminate inertia effect of alternator on engine overrun allowing alternator to free wheel which stops severe belt whip and stress on belt tensioner. OAPs suitable for normally aspirated and supercharged engines that are prone to belt slippage and failure due to belt instability. 6 Rib and 8 rib versions available – simple bolt in place of solid alternator pulley. Impact fitting tools available separately and in complete tool kits for general OAP service.

More From This Category

ICON Piston, 4 in. Bore, 1.5mm, 1.5mm, 3.0mm Ring Grooves, For Chevrolet 350 Rod 6.000 Flat Top +4.7cc 2V, .030 Oversized, w/ Rings, Each

ICON Piston, 4 in. Bore, 1.5mm, 1.5mm, 3.0mm Ring Grooves, For Chevrolet 350 Rod 6.000 Flat Top +4.7cc 2V, .030 Oversized, w/ Rings, Each

$1,709.08

MANLEY Piston, Coated, Extreme Duty, 1.115 in. Compression Distance, 4.130 in. Bore Size, -20cc Dish, Coated, For Chevrolet SB, Each

MANLEY Piston, Coated, Extreme Duty, 1.115 in. Compression Distance, 4.130 in. Bore Size, -20cc Dish, Coated, For Chevrolet SB, Each

$298.95

Wilwood PAD,D1185-30,AXLE SET,12 PADS

Wilwood PAD,D1185-30,AXLE SET,12 PADS

$475.33

MILODON Gear Drive, Single Idler, 0.250 in. Raised Cam, Injection/Blown Drive, Mopar, Big Block B/RB/Hemi, Set

MILODON Gear Drive, Single Idler, 0.250 in. Raised Cam, Injection/Blown Drive, Mopar, Big Block B/RB/Hemi, Set

$2,680.54

QA1 26 Series Shock, Monotube, 7in. Stroke, 3C/12MR, Linear, Hyperscrew

QA1 26 Series Shock, Monotube, 7in. Stroke, 3C/12MR, Linear, Hyperscrew

$427.67