Information on GM UIM Plenum and Aftermarket Plenums for SII 3800

Here is some logistical information concerning the composite UIM found on GM cars with the SII 3800 and options if and when you decide to replace it.

OEM/GM/AC Delco

GM UIM part number: 89017272
GM UIM gasket: 89017554

AFTERMARKET

APN 229679 (http://www.automotivepartsnetwork.com/store/pc/viewPrd.asp?idproduct=229679) <--Click for more details

Dorman/Motormite 615-180 (https://www.dormanproducts.com/cgi-bin/vm91corp30r/item-dtl.w?sid=0x0136f240&item=615-180&icrid=&clt=hwrap1&vsrch_str=615-180&vsrch_brand=ALL&vsrch_cat=ALL&st_amount=&end_amount=&start=&vfrom=&prev=&vnext=&category_list=:0) <--Click for more details