TCI® Turbo 400 transmissions deliver great strength, versatility and durability for serious drag racing applications. The new TCI® PRO-X™ TH400 Aluminum Tailhousing features light weight and improved strength while using a tailshaft roller bearing rather than the factory bushing for superior lubrication and durability. The OE bushing is a common failure point with TH400 transmissions as it can run dry in high speed TH400 applications. The TCI® PRO-X™ TH400 Aluminum Tailhousing With Roller Bearing is more rigid than other factory or aftermarket tailhousings with more structure for added support and durability. Like all PRO-X™ components, it features the revolutionary TCI® HDT (Heat Dissipating Technology) Coating™ that dramatically reduces transmission operating temperatures. The use of the roller bearing provides added lubrication, and the usually unreliable paper gasket used to seal the housing to the transmission is replaced with a precision-machined surface that incorporates an o-ring for a solid, drip free connection.Pit Stop USAoffers TCI Tailhousing w/ Bearing Pro-X GM TH400 226405 at low everyday prices. Be sure to check out all of our products from TCI Automotive including TCI Automotive Automatic Transmission Tailhousings.