Caterpillar C12, Engine Brakes, (GOOD USED/TESTED) CAT C12 Jake Brakes 312A (12 VDC), Housing P/N 021078, Other P/N WF6, 0F23, Model 312A, Set of 3, Serial # (1) 172135, (2) 172133, (3) 172134, Stock # 4960 | Tested & Inspected!
