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The WCFab Stage 3 High Flow Bundle for 2006–2007 Chevrolet 6.6L Duramax LBZ builds on Stage 2 by adding a 3in stainless steel downpipe to improve exhaust flow after the turbo. The kit includes large‑diameter 4in aluminum intake piping, a 4.8in intake horn and upgraded 3in/3.5in intercooler pipes with CNC flanges and double o‑ring seals. Hardware, boots and clamps are specified for durability and bolt‑on compatibility with stock trucks.
Wehrli 06-07 Chevrolet 6.6L Duramax LBZ Stage 3 High Flow Bundle Kit - Bengal Blue
