Earl's Transmission oil cooler adapters allow easy installation of AN -6 hoses to a late-model GM 6-speed automatic transmissions (fits 6L80E and 6L90E transmissions). This adapter bolts onto the Original Equipment transmission thermostat. This adapter uses O-Ring seals and has -6 AN male flares for use with AN pluming & Earl's (or similar) oil coolers. Black Anodized finish.