These fittings are threaded into the cooler ports in your transmission and enable you to run AN lines to a transmission cooler. In 1997 GM moved one
TH350 Stubborn Fitting
Turbo-Hydramatic - Wikipedia
4L60e cooler lines - Third Generation F-Body Message Boards
2PCS AN6 1/4NPS Transmission Oil Cooler Adapter For Turbo 350 400
98-ON GM 4X4 Transfer Case Seal O'Ring & Adapter Gasket 4L60E 4L65E Transmission $16.87 - PicClick
Car Transmission Oil Cooler Adapter, 1 Pair Car 8AN‑1/4NPS
How to Replace Transmission Oil Cooler Connector 2006-2013
1978 Aerocoupe Caprice: 5.3 / 4L60E - Page 3 - LS1TECH - Camaro
Transmission Oil Cooler Line Adapter 1/4 NPS to -6AN Threads Fittings Fit 4L60E
4L60E COOLER Line Fittings Clip & ORing Repair 4l80e cooler line (1997-2003) $8.91 - PicClick
4L60e cooler lines - Third Generation F-Body Message Boards