Buick GS 455 Automatic Transmission with THM400 Transmission 1970, Automatic Transmission Extension Housing Seal by ATP®. When reliability and OE performance is a must, turn to this ATP product designed to provide a precise fit, OE quality, and function. Made of premium quality materials, it will easily restore your transmission system to its original condition ensuring predictable and long-lasting performance.
- OE quality at an affordable price
- OE fit and function
- Direct replacement
- Made of premium material
- Excellent durability for long-lasting service life
Today vehicles with an automatic transmission are very popular among both new and well-experienced drivers. This is because the automatic transmission is simpler to operate, which means it's more comfortable for long trips. Just like a manual transmission, the automatic transmission's primary purpose is to allow the engine to operate in its narrow range of speeds while providing a wide range of output speeds. The main difference between a manual and an automatic transmission is that the manual transmission achieves the various gear ratios by locking and unlocking different sets of gears to the output shaft, while in an automatic transmission, the same set of gears produces all of the different gear ratios.
Both systems have hardware which ensures quiet and reliable performance of the whole system. In the automatic transmission, worn out or damaged seals, gaskets, or bushings can cause fluid leaking; damaged or corroded transmission drive chains and clogged filter result in poor transmission performance. To ensure your transmission system operates at its peak, replace its worn out or damage components with ATP products. Every part is made to original equipment specifications so you can be assured of perfect fit and function. Made of premium quality materials, the products ensure superior durability for long-lasting service life.
ATP® was founded on July, 1955, and is currently known as one of the market leaders of automotive products consumed by professionals and do-it-yourselfers. The company is located in the northern suburb of Chicago, Illinois. Operating out of its own 92,000 sq. ft. facility, ATP offers a comprehensive product line that includes automatic transmission filter kits, repair kits, exhaust manifold kits, harmonic balancers, timing covers, cables, flywheel and ring gears, interior vent filters, and chemicals. With its dedication to perfection, ATP provides its clients with products which ensure lasting value and lead industry standards and practices to "zero defects."