This is an elbow fitting for the rear differential on 1997-1999 Chevrolet Kodiak and GMC Topkick T6500, 1997-2009 Kodiak/Topkick T7500, and 1990-2009 Kodiak/Topkick C7500 trucks. This fitting mounts on the rear differential on these trucks for the air lock supply line. This fitting was manufactured by Parker for GM. This elbow fittings thread pattern is M12 X 1.5 TO 1/2-20. This part may be brass colored or silver. We have a stock of both available that are identical parts. Replace your old part with this brand new factory original part from GM at a fraction of the dealer price.

New. Never Installed. OEM part. Bulk Overstock

GM Part # 15670400

Other Part # 5M12C8OMXS

Item is number 7 in the GM diagram