One New Aftermarket Replacement Muffler Fits: Fits International Tractor: Hydro 70, Hydro 86, 666 (with C291 gas), 686 (with C291 gas), 706 (with C263 & C291 gas), 766 (with C291 gas), 806 (with C301 gas / D361 diesel), 826 (with C301 gas), 856 (with C301 gas / D407 diesel) Tech Info: Inlet I. 3″, O/A Length 34″, Inlet Length 3-1/4″, Outlet Length 8-1/4″, Shell Length 23 Replaces Part Numbers: 530578R4, 570578R3. 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.