Great upgrade for the TH400 and 4L80E that still has the weaker 17 element sprag. Genuine Borg Warner part.
“DANA SPICER 3-3-2431X T-400, 4L80, 4L85 Transmission Slip yoke SHORT BARREL 1350 Series 32 spline” has been added to your cart. View cart
GM, Transmission
34 Element Sprag for TH400 and 4L80E Transmissions – GM 8633173 / 34418X
$71.99
Availability: In stock
SKU: 8633173
Categories: GM, Transmission





