Dieselr Aluminized 4" CAT Back Exhaust Single | 2500/3500 6.6L GM DURAMAX LB7 (2001-2004.5)The Dieselr Aluminized 4" Cat Back Exhaust Single (20012004. 5 6. 6L Duramax LB7) is built for Chevy Silverado and GMC Sierra 2500 3500 owners who need a reliable, performance focused exhaust system that lasts. Constructed from 4 inch heavy duty aluminized steel, it provides smoother exhaust flow, a refined diesel tone, and long term corrosion resistance. Each Dieselr cat back system is mandrel bent for consistent, unrestricted flow and precision
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Dieselr Aluminized 4" CAT Back Exhaust Single | 2500/3500 6.6L GM DURAMAX LB7 (2001-2004.5)