I will be installing a new 4" system this week. The 2 downpipe bolts are in bad shape and I can see them snapping trying to remove them. Does anyone know the size of these bolts so I can have a couple ready to go.. Thanks!

 

sorry i dont know the size of the bolts. i dont know how you plan on taking the down pipe out but i would pull the v-band clamp off from the turbo elbo and just take the down pipe with the elbo on it out in one peice so that you can get so WD-40 on the 2 bolts and get a good angle/grip to get them off, maybe without breaking them, that what i did when i installed my system and it was a lot easyer then trying to undo those bolts when the down pipe is in the truck + i didnt break the bolts .

so if you cant get new bolts you might beable to use your old ones if you have to.

 

That's what I plan to do... I will have plenty of PB blaster and my torches ready to go...

 

10mm, roughly 60mm long. I know my MBRP system came with new bolts, I'd think most systems would.

 

mine did not come with new bolts, and naturally one snapped off removing it. on the side that broke, i drilled it out, put a through bolt in and lock washered it. ive checked it each time ive changed fluids and nothing loose yet.