Hushmat Ultra Bulk Kit Heat and Sound Barrier 12 x 23" Sheet 1/8" Thick Rubber - Silver H760C42XXL The 4772 features a 1

The 4772 features a 1

These heads retain an exhaust crossover passage and are street legal replacement parts

kitSince 1938

Heat ShieldSince 1995

(NOT Compatible with Hydraulic Roller Camshafts) Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat

Hushmat Ultra Bulk Kit Heat and Sound Barrier 12 x 23" Sheet 1/8" Thick Rubber - Silver H760C42XXL The 4772 features a 1Reduce that aftermarket engine, exhaust drone, road noise, vibration and the noise that disrupts your ride and reduce the heat that comes from engine, headers, exhaust and catalytic converter with one USA Made material light weight HushMat UltraHushmat produces specialized rubber insulation. This insulation not only insulates your vehicle from the heat of the road but also reduces unwanted vibration and noise. #1 Rated HushMat provides incredible