Walker SoundFX 18915 Direct Fit Exhaust Muffler 2.5" Outlet (ID) for Chevrolet Trailblazer

Direct fit works awesome

Walker SoundFX 18915 muffler.For those asking or wondering, the nuts are M10 1.5 thread. At least on mine it is. Your Welcome.

I bought one of these in 2017. It lasted till 2022. Pretty good. So I bought another one. The nuts were not included. (I'd pay you 2 extra dollars if you included the nuts.) I tried to use the old nuts which were severely rusted and stripped out when I tightened them down. I then took them to the hardware store and tried to guess what size they were. Bought 12mm x 1.5. Didn't work. I'll go back to the hardware store and try the 1.25 tomorrow.So here's a suggestion. In the description write, "12mm x 1.25 nuts not included." That way anyone can go to the hardware store and buy the correct nuts before they put the muffler on.Correction: 99% sure the nuts are 10mm x 1.50. Hardware store nuts and bolts weren't in perfect order.

Perfect fit

Installed on 2003 Envoy. This is the second Walker muffler installed on the vehicle. The first was the "stainless steel" version that only lasted about 5 years before developing a hole along the length of the welded seem of the body of the muffler. Same for the Walker resonator that lasted only 4 years before completely falling off due to corrosion while driving down the road a few years back. So, I predict that this "aluminized" Walker muffler will last about 4 years in the Chicago winters before developing a hole along the same weak point. This does not come with nuts or the graphite gasket that mates with the catalytic converter. Thought that at least the nuts would have come with it to match with the studs.Amazon had the best price and next day delivery. Would have hated to pay more for a part that I know will fail in a few years.

Great

As described and fast delivery. :)

Seems to be a quality built can. We'll see how it holds up.