Trailblazer SS 1 7/8" Headers & Y-Pipe 2006-09 (6.0L Engines)

Installed on 2006 Buick Rainier (says it will not fit...but a 5.3 Rainier is no different than a 5.3 Envoy or 6.0 Trailblazer SS). Fit great, headers are absolutely beautiful and welds are very good!!! Clamps included looked good, but bolts were not strong enough to fully clamp the pipes for the Y-Pipe. I would suggest investing in some heavier duty clamps or upgrade the bolts to grade 12 bolts like I did. I would also suggest using factory exhaust manifold gaskets, the multi-layer stock ones work amazing! I was impressed with the added o2 bung installed in the Y-pipe for a wideband setup, but being novice I would imagine you would need both banks measured to tune correctly (might be wrong). Altogether, this is an amazing price for an amazing set of long tubes!!! Fit is super nice and well off of anything that could cause a vibration or clunk. Enjoy!

Shipping was fast! I installed them and they look great and sound great. They fit perfect on my 2006 Envoy Denali with a 6.0L installed. I do have my front driveshafts removed so I had no difficulty with the 4wd. What a steal for this price!!!

Good fit , use your stock exhaust manifold gaskets

Great product