COMP Cams Seat Spacer BB Chevy Exhaust .300" Thickness H76803FXL 2003-2004 Mercury Marauder

2003-2004 Mercury Marauder

Replacement SCP #CLB5

1999-2005 Ford F-350 Super Duty 96

Bypass Valve

Installs easily with little to no drilling/trimming required -- all hardware is includedVehicle Applications: 2019-2020 Ford Ranger Styleside 61

COMP Cams Seat Spacer BB Chevy Exhaust .300" Thickness H76803FXL 2003-2004 Mercury MarauderLate 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