Earls Electric Water Pump Block Adapters - Pair - Fits GM LS Engines

For Use w/ Big Block Chevy Electric Water Pump, (2) -12 AN O-Ring Outlet Ports for Coolant Return to Radiator. 1/8" NPT ports for use with Steam Tube Plumbing. Billet Aluminum w/ Black Anodized Finish


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These new billet block adapters allow the use of a big block Chevy electric water pump on the GM LS engine. These adapters feature (2) -12 AN O-ring female outlet ports for routing coolant back to the radiator. The 1/8" NPT port on the sides of the adapters allow a convenient hook-up for the steam tube outlet (eliminates modification of the radiator or water pump when installing the steam tube plumbing). This part includes the two block adapters, gaskets and mounting bolts.


  • Billet Aluminum Block Adapters for GM LS Engines
  • (2) -12 AN O-Ring Female Ports (Outlet on Each Side of the Block)
  • Black Anodized Finish
  • 1/8” NPT Female Ports – For Easy Connection of Steam Tube Plumbing
  • Includes Gaskets & Mounting Hardware
  • Use AN Plumbing for the Coolant Return to the Radiator
  • Ideal for Use w/ Most Electric Water Pumps – for Big Block Chevy
  • Recommended for Use w/ the Following Water Pumps: Frostbite #’s (22-113, 22-114, 22-126, 22-133, 22-134), or Mr Gasket #’s (7022G, 7022BG)


Adapter AN Size ( A )12 AN Female O-Ring
Adapter NPT Size ( B )1/8 NPT FEMALE
Emission Code5
FinishAnodized Black
Material6061 Aluminum
Product TypeWater Pump Adapter
Part NumberLS0025ERL

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.


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