Muffler Replacement for Loader *Exhaust* fits in Fits Caterpillar Fits CAT 950GOne New Aftermarket Replacement Muffler Fits Caterpillar (Fits CAT) Wheel Loaders and Integrated Toolcarrier This aftermarket replacement muffler assembly is Fits Caterpillar (Fits CAT) G Series wheel loaders and the IT62G Integrated Toolcarrier. Part of the engine exhaust system, the muffler reduces noise and directs exhaust gases away from the engine compartment, keeping the machine operating within noise and emissions guidelines on the job site.