BBK 99-04 GM Truck SUV 4.8 5.3 Shorty Tuned Length Exhaust Headers - 1-3/4 Titanium Ceramic Exhaust- Mufflers & Tips>Exhaust Brakes The airbox has been crafted

The airbox has been crafted with premium materials and designed with 2 air scoops that feed from factory vent locations

Form-A-Shield(TM) can be applied directly to hot surfaces helping to lower under hood temperatures while keeping more heat in the exhaust system

we made it easy to convert from the Trail Edition to a single or dual outlet Tread Edition

ONYX(TM) Starter Shield offers the highest level of protection for starters from potential failure caused by under hood heat soak conditions

BBK 99-04 GM Truck SUV 4.8 5.3 Shorty Tuned Length Exhaust Headers - 1-3/4 Titanium Ceramic Exhaust- Mufflers & Tips>Exhaust Brakes The airbox has been craftedThese BBK Performance shorty tuned Length exhaust Headers are designed and constructed as direct fit replacements for all 99 04 GM Truck and SUV 4. 8L and 5. 3L applications. Each header is manufactured with 1 5 8 in. CNC mandrel bent tubing that offers unrestricted exhaust flow for increased horsepower and torque over factory OEM manifolds. BBK tuned Length headers offer improved scavenging waves for better combustion, which leads to improved