What size bolts (and where to get them) for my EPM 02 dump and custom 3-inch downpipe? I tried searching but to no avail. Please help. Thanx

 

Measure the inner diameter of the bolt hole with some calipers and post back. If you can't do that, maybe post a pic for better reference. It's likely metric, but without seeing it or knowing what you're talking about ( Is this the entire o2 HOUSING and you are wondering what bolts thread into your turbo to hold the housing to it?) it's near impossible to give a useful answer.

 

I can tell you they are 4" long, pitch is 1.75 and the top says FW 8.8.

 

How bout this: Whats a typical sized bolts for average aftermarket 02 housing and downpipes? Maybe u guys can help me out with that one.

 

If you know the pitch it's gotta be a 8, 10, or 12mm x 1.75

I got your pm but am on here now so there ya go.

Sorry i'm not at the shop and can't remember off the top of my head

 

I don't have a caliper but eye-balling it with a tape measure it looks like 8 or 10.