Wehrli Custom Fab Stage 3 High Flow Bundle Kit for 2007.5–2010 Chevrolet 6.6L Duramax LMM in Deore Gold bundles a 4" aluminum intake and air box with dry filter, a 4.8" intake horn with PCV port, upgraded 3" driver and 3.5" passenger intercooler pipes, a two-piece 3" Y-bridge with CNC flanges and double O-rings, plus a 3" stainless downpipe to improve intake and turbo airflow without requiring tuning.
Wehrli 07.5-10 Chevrolet 6.6L Duramax LMM Stage 3 High Flow Bundle Kit - Deore Gold