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Earls LT Side Mount Oil Cooler Adapter

LT Side Mount Oil Cooler Adapter


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Earl's billet side mount oil cooler adapters are the slick way to add an oil cooler to your GM LS or Gen-V LT engine. The slim design of these adapters clear most headers and other components and feature -10 AN male connections. These adapters are black anodized and use O-Ring seals for a leak free installation. The Gen-V LT adapter fits the OEM Corvette, OEM Truck, and Holley 302-20, 302-22 oil pans only. The Gen-V LT Truck engines require an extra spacer plate (1127ERL) between the oil cooler adapter and the oil pan to provide clearance from the adapter to the engine block. Choose from a standard adapter or one with a thermostat (180 degree is standard & optional 210 thermostat is available separately).


  • Billet Aluminum w/ Black Anodized Finish
  • Includes 0-Ring Seal & Hardware
  • (2) 1/8” NPT Accessory Ports
  • -10 AN Male Connections
  • Available w/ 180 Degree Thermostat
  • Add an Earl’s Oil Cooler and AN Plumbing to Complete the Installation
  • Fits: OEM Corvette and Truck Oil Pans
  • Fits: Holley Oil Pans 302-20 & 302-22


Adapter AN Size ( A )10 AN MALE
Adapter AN Size ( B )10 AN MALE
Adapter NPT Size ( C )1/8 NPT FEMALE
Emission Code5
FinishAnodized Black
MaterialBillet Aluminum
Product TypeOil Cooler
Part Number1126ERL

Service Parts



This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Tech Resources

Fits Gen-V LT Engine in Corvette and Truck only (does not fit Camaro). Also Fits Holley Oil Pans 302-20 & 302-22. LT Truck engines require oil cooler adapter 1126ERL or 1129ERL and spacer 1127ERL – for clearance to the engine block. Camaro Engines Can Use This Adapter only when using Holley Oil Pans 302-20 or 302-22.


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