4L80E Transmission Overrun Drum With Sungear Fits 1991-2000 Units Stronger than the 2001-up Drum Upgrade 2001 up Unit by switching to this drum…
4L80E Overdrive Planetary (Early) This overdrive planetary assembly is redesigned with a billet steel drive plate to eliminate spline/housing failure in…
Heavy Duty Main Shaft Main shaft failure is a common problem in performance and heavy duty GM TH400, 4L80-E and 4L85-E…
This 400, 4L80E Billet Aluminum Direct Drum is manufactured specifically for drag racing Comes complete with: Billet aluminum piston and 3 Sure…