SPEC 15781.500 EXHAUST BRAKE BUTTERFLY VALVE FOR TOYOTA DYNA COASTER 46710-36171 4671036171 TOYOTA HZB50 1993- COASTER BUS 1HZ 6 CYL 4.2L 1993- TOYOTA XZB50 2006- COASTER BUS N04CT 4.0L 2006-THIS IS A SPECIAL ORDER IN ITEM AND MUST BE PAID FOR BEFORE ORDERING ITEM TAKES 9 19 BUSINESS DAYS AND IS ORDERED AS SOON AS PAYMENT IS MADE ONCE YOU HAVE PAID FOR THE ITEM THERE IS NO REFUND ON THIS ITEM EXHAUST BRAKE BUTTERFLY VALVE ASSY TOYOTA KNORR JKC EXHAUST BRAKE BUTTERFLY VALVE ASSY YOU WILL NEED 2 GASKETS TO FIT PART NUMBER :> 13105. 555 QTY X 2 YOU MAY NEED A NEW VACUUM CHAMBER AS WELL PART NUMBER :> 15780. 007 QTY X 1 TOYOTA BU100 1995 DYNA