Heavy duty transmission parts work simultaneously to provide the right amount of power to your wheels for optimum speed. Without dependable and high-quality transmission parts, you risk losing fuel economy and drivability.Keep your heavy duty truck transmission running at peak performance with high quality transmission parts from FleetPride, including replacement manual and automatic transmissions, transmission bearings, shifters, transmission breathers, transmission gears, manual transmission shift cables, transmission bearing retainers, transmission drain plugs, air module assemblies, oil coolers, isolator bushing kits, valve assemblies, transmission fixes, transmission filter kits, transmission accessories, and more. View our extensive inventory of parts to be Ready for the Road Ahead™.Gates is a leading manufacturer of power transmission solutions for heavy duty trucks and trailers. Products include belts, tensioners, engine hoses, water pumps, and system components. Gates works to produce high-quality OE and OE equivalent parts while keeping your costs and downtime down.Gates uses their expertise to solve current problems. In addition, the company invests in research and innovative technology to anticipate and solve issues. Gates exceeds expectations by investing in people and customer relationships.Charles C. Gates founded the company in 1911 in Denver, Colorado. Denver is where Gates headquarters remain today.