(1) This is a 12mm 12-point wrench with a 1/2" drive. Replaces for 9866B 9866A 9866. 2007 (Ram Truck, KS) - Systems (9 - Engine, 6.7 L Diesel). 2008 (Ram Truck) - Systems (9 - Engine, 6.7L Diesel). 2009 (Ram Truck 2500/3500) - Systems (9 - Engine, 6.7L Diesel).
