TH400 Billet Aluminum Pump Body Half & Fitted Gears. This TCS TH400 billet aluminum pump body with fitted gears eliminates thesearch for agood used pump body core for your performance TH400 transmission! The TCS billet aluminum pump bodyweighs 5.17 lbs. versus 7.91 lbs on the O.E.M. assembly.Added lubricationfeature in gear area. Anti spin features in front bushing area. Snap ring retains the front seal for added safety.. No Blowout. Bolts together with the O.E.M. TH400 stator support.