All States Ag Parts Muffler John Deere 4050 4240 4640 4040 4430 4450 4455 4840 4630 4255 4055 4320 4440 4250 RE20224 Fits John Deere Tractor(s) 4040, 4050, 4055, 4240, 4250, 4255, 4320, 4430, 4440, 4450, 4455, 4630, 4640 (s/n 5511-later), 4840 Replaces John Deere OEM nos RE20224, AR48773, AR61073, AR86599 Muffler mount: Vertical Overall Length: 37" Shell Diameter: 4-3/4"x8"