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Banks 3.0‑inch boost tube upgrade for 2004.5–2009 Chevy/GMC 6.6L Duramax replaces the smaller factory tube with mandrel‑bent constant‑diameter aluminized steel and larger radius bends to improve flow. With about 60% greater flow area than stock, it helps the turbo spool faster, retains boost pressure between turbo and intake, lowers EGTs and supports higher horsepower when paired with appropriate tuning and intercooling.
Banks Power 04.5-09 Chevy 6.6L Boost Tube Upgrade Kit
