Transmission Cooler Adapter
Suit TH400, 1/4" NPSM Thread to -8AN (Pair)

Transmission Cooler Adapter Fittings.

1/4" NPSM Male to -8AN Male.

Suits GM TH350 & TH400 gearboxes, easily plumb your Transmission Cooler with AN lines and fittings. Cooper washers included.

Replacement Cooper Washers - AF59-3750