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The Diamond Eye 4-bolt flange exhaust adapter is a 4-inch inner-diameter clamp-on aluminum adapter for 2001–2007.5 Chevy/GMC 6.6L Duramax 2500/3500 applications. Diamond Eye uses CNC mandrel bending and extensive tooling to produce precise exhaust components. This adapter benefits from mandrel-formed fitment standards and manufacturing quality to provide a dependable clamp-on connection in Duramax exhaust systems.
Diamond Eye ADAPTER 4-BOLT FLANGE 4in INNER DIA CLAMP-ON AL: 01-05 CHEVY/GMC 6.6L 2500/3500 CHV-FBA
