Nearly 30 years of obsessively cataloging, photographing, and taking video of each part means it will fit your 2007 GMC Sierra 6.6L Diesel - SLE - Extended Cab - 78.7in. Bed Cat Back Performance Exhaust.
Period. No Hassle. GUARANTEED.
We cover round trip shipping if we make a mistake.
Check out the video below to view the Guaranteed Exact Fit process from start to finish!