Muffler AR61073 AR86599 AR48773 for J D 4250 4320 4350 4430 4440 4450 4630 4640One (1) New Aftermarket Replacement Muffler Fits John Deere Tractors Replaces Part Numbers: AR61073, AR86599, AR48773 Fits Models: 4250, 4320, 4350, 4430, 4440, 4450, 4630, 4640 Tech Info: Vertical Oval Body 4 3 4" X 8" Shell Dimension New Design Replaces Flared Inlet Dimensions: Dim A: 1 1 2" Inlet Length Dim B: 3 15 16" Inlet ID Dim C: 33" Shell Length Dim D: 3" Outlet Length Dim E: 3 1 2" Outlet OD Dim F: 37" Overall Length