S&B COLD AIR INTAKE, Duramax 6.6L (17-19 & 20-23) Accessories FASS Whisper Technology (FWT) was

FASS Whisper Technology (FWT) was engineered to meet the stringent demands of  today’s quiet diesel engines

50” diameter polished aluminum CAC pipe

and Benchmark Durability

with the goal of bringing a well-refined and proven product to the market

This cutting-edge aftermarket product replaces the problematic CP4 fuel pump with a more dependable DCR pump

S&B COLD AIR INTAKE, Duramax 6.6L (17-19 & 20-23) Accessories FASS Whisper Technology (FWT) wasCOLD AIR INTAKE FOR SILVERADO SIERRA DURAMAX L5P 6. 6L, Cleanable Filter Our cold air intake for the Silverado Sierra Duramax L5P 6. 6L was engineered to minimize air restriction and flow better than stock. This kit comes with a fully enclosed airbox that protects the filter from dirt and keeps out engine heat.