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The Diamond Eye 4-inch aluminized catback MRP single w/ turn-down kit for 2004–2005 Chevy/GMC 6.6L LLY Duramax 2500/3500 offers a 4-inch aluminized replacement for the catback section with a single turn-down outlet. Diamond Eye’s production tooling supports aluminized and stainless options across multiple diameters, and this kit is specified to suit all cab and bed lengths for the named LLY Duramax applications.
Diamond Eye KIT 4in Catback MRP Single w/ TDP AL 04-05 Chevy/GMC 6.6L Duramax 2500/3500
