identified by checking the Service Parts identification Sticker EXAMPLE V lf rhe truck had a C 10903 with 131 5 WR and 5400 GVVIC it would be equipped with JB3 brake system lf the truck
Single JB 5 117 5 6400 Single JB 5 K 10903 131 5 5200 Single JB 3 JB 5 131 5 5800 Single JB 5 131 5 6400 Single JB 5 K20903 6800 Single