One New Aftermarket GM Adaptersb38 Male Inv Fl x 516 Female Inv Fl 2 Pk bifontfont size3bTech Infobfontfont size3 Size 38 Male Inv Flare x 516 Female Inv Flarefontfont size3 Unit 2 pkfontfont size3 Outside Thread x Pitch 5815fontfont size3 Inside Thread x Pitch 1220fontfont size3 Step Up Step Down Inverted Flare Transmission Cooler Adaptersfontfont size3 Adapts Transmission Coolers to Oil Line Fittingsfontfont size3 See RW8051 for Inverse Male Femalefont