breather or oil filler cap
drag racing and circle track use
Fits 3-Bolt applications only
The throttle body flange uses a 4
Easy No Hassle Type Installation
Proform Starter Staggered Bolt Pattern Racing Optics breather or oil filler capProform Starter 66268 Staggered Bolt Pattern High Torque; Gear Reduction Design Offset Design Results In More Clearance Can Be Rotated 40 50 percent More Cranking Power 3. 75: 1 Sealed Gear Reduction Drive Full Ball Bearing Construction Includes Shims Applications include: Bel Air, Biscayne, Blazer, Blazer K5, Brookwood, C10 Pickup, C10 Suburban, C15 Pickup, C15 Suburban, C15 C1500 Pickup, C15 C1500 Suburban, C1500 Pickup, C1500 Suburban, C20 Pickup,