Hi all, I recently put D452 headers in (2" primary into 3.5" collector), and now I'm going to make the exhaust.

When I opened the little box labeled D452, I saw that the reducers they included are 3.5" to 2.5". I thought for sure they would (and should) be 3".

Can anyone who also has these headers let me know if they sent yours with the 3.5 to 3" reducers? I'm hoping they put the wrong parts in my box.

The instructions do have a parts list, but have no part numbers, it only says:

3.5" reducers

?

Hello

My D452's came with 2 1/2" reducers.

Kevin

This is what I went to for a 3.5" to 3" reducer..
I sprayed the ball socket with bluing or use paint
and bolted the pipes together in proper location..
it will leave a tell tail of where they seal.. I
ground all the extra material away to reduce the back
pressure.. I later added electric dumps to even help
more on back pressure.. after I welded the sockets on I
took them back in for powder coating like the rest of the
headers