Muffler Fits International Harvester 454 464 574 656 664 674 Tractor. One New Aftermarket Replacement Muffler Fits Case-IH Tractor Models: 574 (W/C200 ENG), 574 (W/D239 ENG), 674 (W/C200 ENG), 674 (W/D239 ENG), 684 Inlet I. 2″, O/A Length 30″, Inlet Length 3-1/2″, Outlet Length 9-1/2″, Shell Length 19. Replaces Part Numbers: 533924R1, 403551R1, IH-24 EMI. About Reliable Aftermarket Parts. Reliable Aftermarket Parts is your trusted source for high-quality replacement parts covering a wide range of outdoor and heavy equipment. We specialize in parts for Lawn & Garden, Snow Removal, UTV, ATV, and Golf Cart machinery, as well as Backhoes, Crawlers, Excavators, Tractors, Skid Steers, and more – covering most leading brands and models in the industry. Our team is here to help you find the right part and get your equipment back up and running. Please note: This policy does not apply to glass or seat orders. Please save all original packaging. If you receive an item not as described. Have questions before you order? How do I know my order was placed successfully? Can I return a part that doesn’t fit or that I no longer need? John Deere, Allis Chalmers, Ford/New Holland, Case, Massey Ferguson & More. Allis Chalmers, International Harvester, Caterpillar, Komatsu & More. Bad Boy, Briggs & Stratton, Cub Cadet, Honda, Sears, Snapper & More. Ariens, Briggs & Stratton, Jacobsen, Toro, Troy-Bilt, Sears & More. Expertly trained staff ready to help you track down the right part every time.