COMP Cams Seat Spacer BB Chevy Exhaust .300" Thickness RS00500305 One other new feature is

One other new feature is our internal comfort lace up system requiring less space and lowering the bulk on the top of the foot thus increasing comfort

Vehicle Applications: 2011-newer Ford MustangVehicle Applications: 2011-newer Ford Mustang

Viton with Larger 2

32 x 18 x 10

COMP Cams Seat Spacer BB Chevy Exhaust .300" Thickness RS00500305 One other new feature isLate model Big Block Chevrolet engines are originally equipped with exhaust valve rotators. Until now, the only way to make up for the rotator was to stack . 300" of shims under the spring. This was sloppy but also did not fit as well as these seat spacers. These will locate the spring with an outside step so the spring cannot "walk" around on the head. Avoid stacking . 300" of shims under the valve springs on your Big Block Chevrolet with our seat