This is the vertical weatherstrip for the rear left door on 2003-2009 Chevrolet Kodiak and GMC Topkick C4500, C6500, C7500, and C8500 trucks. This mounts vertically on the rear left door on these trucks. This weatherstrip has the mounting tabs installed. This is a black colored rubber and foam part. Replace your old part with this brand new factory original part from GM.

New. Never Installed. OEM part. Bulk Overstock

GM Part # 25867740

Alternate GM part # 15964579

Item is number 28 in the GM diagram