Brake Systems, , DETROIT Series 60 12.7L, Engine Brake, (GOOD USED) JAKE BRAKE MODEL 765 FOR SALE, PART# 017537, (12 VDC) PULLED OFF A DETROIT SERIES 60 12.7L, P23507824, SERIAL# EM444256, EM444251, EM444258, STOCK# STOCK #2525 ALL OURPARTSARETESTEDAND SHIPSAME DAY!CONTACT US FOR MORE INFORMATION!CALL(305)688-1101