COMP Cams Seat Spacer BB Chevy Exhaust .300" Thickness H76803FXL 1999-2005 Ford F-350 Super Duty

1999-2005 Ford F-350 Super Duty 96

Medium-Low Temperature

2-Piece Seal to 1-Piece Seal

24" x 18" x 10"

COMP Cams Seat Spacer BB Chevy Exhaust .300" Thickness H76803FXL 1999-2005 Ford F-350 Super DutyLate 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