Peterson Fluid Systems HTD Oil Pump Pulley - 33 Tooth - 5/8" Bore - 3/16" Keyway - 1.020" Wide New Vintage USA From the one-piece sealed housing

From the one-piece sealed housing with a tire tread top

Esslinger Head

stock port

you can acti┬ ¼Î“ëávate different retard amounts at select times

Mandrel-Formed Power Plenum

Peterson Fluid Systems HTD Oil Pump Pulley - 33 Tooth - 5/8" Bore - 3/16" Keyway - 1.020" Wide New Vintage USA From the one-piece sealed housingHTD (High Torque Drive) pulleys are CNC machined from billet aircraft aluminum and hard coat anodized for durability. Pulleys are 8mm pitch. Peterson Fluid Systems is the choice of champions for wet and dry sump oiling systems. Peterson Fluid Systems offers a complete system from their class leading oil pumps to their championship winning oil tanks, oil and fuel filters, and accessory drives. Peterson Fluid System products have been proven in NASCAR,