Chevy LS1 LS6 Block Hugger Stainless Steel Exhaust Headers They use silicon aluminum bi-metal

They use silicon aluminum bi-metal construction

and less chance of crank failure

and use lightening holes in all rod throws

Speedmaster serpentine belts are designed to keep your accessory drive operating properly

Chevy LS1 LS6 Block Hugger Stainless Steel Exhaust Headers They use silicon aluminum bi-metalIncrease your horsepower and torque for your ride just bolt on these Speedmaster headers! These headers are designed with 3 8 in. thick laser cut flanges and mandrel bent primary tube. If your vehicle is using aftermarket components, parts from other applications, or custom altered parts, then it is the installer's responsibility to verify fitment.