GM SB Heat Riser# 3887023

**Ricks72Z28** · #1 02-24-2018, 09:56 PM

Looking for a GM small block heat riser in excellent or NOS condition...GM part #GM 3887023.

**Lynn** · #2 02-25-2018, 01:59 AM

https://www.yenko.net/forum/showthrea...hlight=3887023

https://www.yenko.net/forum/showthrea...hlight=3887023

If you can't find NOS, the closest one out there is the OER. Look here:

https://www.ebay.com/p/OER-3887023-1....c100005.m1851

The orientation on the one the Parts Place has on ebay is backwards.

I can post pics of an NOS one if you want to compare it to the ones on ebay.

**Lynn** · #3 02-25-2018, 02:14 AM

Here are some pics of one I bought in 2000. It isn't for sale.

There are remnants of what I believe are the casting number of the main body. They usually do not show up as they are machined off when the part is finished. These just barely show, and look like 3539427 to me.

If you look closely on most of the ones on ebay, they are not oriented correctly. Some don't have the flapper welded on the shaft like the originals. The OER one looks pretty good.

Good luck.

Lynn

**Lynn** · #4 02-25-2018, 02:16 AM

one more:

**Ricks72Z28** · #5 02-25-2018, 01:23 PM

Lynn,

Thank you for the info.... appreciate the pictures.