One New Aftermarket Replacement Muffler. Fits John Deere Replacement Part. Fits 4050 4239D 4239DT 4250 4276D 4276DT 4320 4430 4440 4450 4630 4640 6359D 6359DT 6414D. Made to replace AR48773 AR48773-A AR61073 AR61073-A AR86599 AR86599-A RE20224 RE20224-A. Models this part fits: 4050, 4239D, 4239DT, 4250, 4276D, 4276DT, 4320, 4430, 4440, 4450, 4630, 4640, 6359D, 6359DT, 6414D Reference Numbers: AR48773, AR48773-A, AR61073, AR61073-A, AR86599, AR86599-A, RE20224, RE20224-A