This is the rear axle knuckle spindle nut for Topkick and Kodiak trucks. This item mounts on the rear axle on 2004-2009 GMC Topkick and Chevrolet Kodiak T6500, and 2003-2009 GMC Topkick and Chevrolet Kodiak C4500, C6500 trucks. This axle nut has the locking tab and measures 2.5" (2 1/2") round on the threads. Replace your old, rusty, cross-threaded, or missing axle nut with this brand new factory original part from General Motors at a fraction of the dealer price.

New. Never Installed. OEM Part. Bulk Overstock

GM Part # 15737204

Alternate GM Part #'s 12470691 ; 47858

Item is number 10 in the GM diagram