Sold Out Quick view FASS Fuel Systems FASS 20-22 GMC / 20-22 Chevrolet 2500HD/3500HD 6.6L Duramax EGR Filter System - EGRC20 Compare $1,577.89 $1,499.99 FASS 20-22 GMC / 20-22 Chevrolet 2500HD/3500HD 6.6L Duramax EGR Filter System Currently Out of stock. On order! Currently Out of stock. On order!