Earls Earl's Oil Cooler Transmission Adapter #1128ERL

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  • $40.46
  • Regular price $49.94
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Fits GM 6L80, 6L90, and 8L90E Transmissions, -6 AN Male Flares, Black Anodized Finish
Earl's Transmission oil cooler adapter allows easy installation of AN -6 hoses & oil cooler on late model GM 6 & 8-speed automatic transmissions (fits 6L80, 6L90, and 8L90E transmissions). This adapter replaces the factory thermostat. These adapters use O-Ring seals and have -6 AN male flares for use with AN pluming & Earl's oil coolers. Black Anodized finish.

Installation Notes: On 6L80 & 6L90 Transmissions the Top Port is the Outlet & Bottom Port is the Return. On 8L90E Transmissions the Front Port is the Outlet & the Rear Port is the Return. This adapter can also be used on the GM 8L45E transmission, but you will need a slightly shorter mounting bolt (about 3/16" shorter).


  • Billet Aluminum Construction w/ Black Anodized Finish
  • -6 AN Male Flares – Use w/ AN Plumbing
  • Bolts to Transmission & Features O-Ring Seals
  • Ideal for Use w/ Earl’s AN Plumbing & Oil Coolers
  • Low Profile – For Extra Tunnel Clearance & Easier Routing of Hoses
Adapter AN Size ( A ) 6 AN MALE
Adapter AN Size ( B ) 6 AN MALE
Adapter Type Transmission Cooler
Brand Earls
Emission Code 5
Finish Anodized Black
Material 6061 Aluminum
Product Type Transmission Cooler
Transmission 6L80
Transmission 6L90
Transmission 8L45E
Transmission 8L90E