This is a A-6C090-58400 Muffler PN: 6C090-58400Main Description As Following : A-6C090-58400 Muffler P.N: 6C090-58400 Horizontal.Mounting Flange bolt pattern: 2" x 2" C-to-C Crosses To: A-B1VPE8250 KUBOTA , Replaces: 6C09058400 KUBOTA , Crossed From: SW08687 , Found in Section & Models : Mufflers/Exhaust Pipes > Mufflers, Kubota TRACTOR, COMPACT: B1410, Kubota TRACTOR, COMPACT: B1610, Kubota TRACTOR, COMPACT: B7300, Kubota TRACTOR, COMPACT: B7400, Kubota TRACTOR, COMPACT: B7400HSD, Kubota TRACTOR, COMPACT: B7410, Kubota TRACTOR, COMPACT: B7410D Associated Items : New Also This is An Aftermarket Product And : Horizontal. Mounting Flange bolt pattern: 2" x 2" C-to-C