Dewhel -8 AN 1/4 NPS Transmission Oil cooler Adapter fittings For GM T350 400 200R 700R 4L60E -8 -1/4 NPS GM transmission cooler fittings -8 x 1/4NPS is the correct size for GM turbo 350, Turbo 400, 700R4, 4L60E and many other GM transmissions. These have a straight thread and seal on the gasket. Unlike a tappered pipe thread these will not crack the case. Material:Aluminium In package :2pcs x AN8 -1/4 NPS Fitting NOTES:: These are black anodized in color. Not for GM Powerglides.