Upgrade your Cummins engine with this high-quality gear housing, designed to fit models 6C 6CT ISC QSC 8.3C. The housing is expertly crafted to meet or exceed OEM specifications, ensuring reliable performance and durability. It is compatible with part numbers 3926721 3908755 3911715 3914945 3915074 3926924, making it a versatile replacement part for your heavy equipment. Manufactured in China, this gear housing is a testament to precision engineering and craftsmanship. Don't let your engine hold you back – replace it with this top-of-the-line component and get your equipment running smoothly again