Automatic Transmission Parts & Components

Replacing worn out or damaged transmission / transaxle components with automatic transmission rebuild kits renews proper function, eliminating slipping gears, and soft shifts. Rebuilding your vehicle's transmission also saves you money over the purchase of a new and complete transmission assembly. This allows you to invest in other areas of need of improvement or restoration on your vehicle.

Upgrading old or failing transmission parts with high performance and heavy-duty components like a manual valve body improves shift quality. This results in firmer and quicker shifting that will improve acceleration, getting you closer to the finish line at the track. Stronger components for automatic transmissions also reduces the chances of failure that can disable your vehicle.

Depending on the transmission system, the number of internal components can vary. However, the three major and most common components of an automatic transmission are the torque converter, valve body, and planetary gear set. In addition, the front fluid / oil pump, clutch packs, output and input shaft, as well as the transmission fluid pan complete the list of basic components.

When rebuilding an automatic transmission, there are many parts that are involved and that need to be replaced. In many applications these components include the filter, bands, sprags, clutches, steels, modules, gaskets, O-rings, seals, bushings, bearings, washer kits, stator support, retainers, sunshell, aluminum or steel servos, sensor, front hydraulic pump, and modulator valve.

There are many factors that affect the life of automatic torque converters. Heat is one of the biggest causes of converter failure, especially with higher-stall speed applications. It is important to have an aftermarket transmission fluid cooler to keep transmission temperature down. Transmission fluid also needs to be changed at the proper interval or when it is noticeably dirty. Contaminants in the fluid will cause friction, which then causes heat as well as the erosion of parts. Another common component that can cause converter failure are bearings. Torque converter bearings fail due to increased friction or poor build and material quality.

There are many options to buy automatic transmission parts online, but only one clear destination. With over 60 years in the business, JEGS has been selling replacement and performance parts for automatic transmissions as far back as 1960, offers competitive prices, and ships in-stock items fast, often the same day.