Fits CAT MUFFLER 1121665, 112-1665 Model# D4H

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One New Aftermarket Replacement Muffler Assembly Fits Caterpillar (Fits CAT) D4H Crawler DozerThis aftermarket replacement muffler assembly Fits Caterpillar D4H series crawler doze rs, including the D4HTSK II variant. The muffler is a direct-fit exhaust system component that replaces the OEM muffler assembly on these machines, helping restore proper exhaust flow and sound attenuation. Replacing a worn or damaged muffler on your Fits CAT D4H dozer with this quality aftermarket unit keeps your machine running safely and within acceptable noise levels on the job site.Compatible ModelsFits Caterpillar (Fits CAT) Crawler Dozers: D4H, D4HTSK II, 54H, 4, 4A, 4P, 4S, 55Replaces Part Number(s):1121665, 112-1665, 4W1743New aftermarket replacement part - not remanufactured, not used. Show more