Earls LS Water Pump Adapter Kit

LS Water Pump to -20 AN Adapter Kit


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$122.95   Suggested Retail
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Earl's leads the way with firsts for LS engines! Water pumps come with push-on barbs for clamping the standard radiator hose. Push-on hose connects just aren't good enough for the hard core performance minded. Earl's offers an adapter kit to convert inlet and outlet to -20 AN. One kits works with ALL LS water pumps. Included is an O-ring adapter plate which upgrades early LS water pumps to the later, less restrictive style of thermostat.


  • Adapts inlet and outlet to -20 AN
  • Upgraded earlier LS water pumps to the less restritive late model thermostats
  • Billet aluminum and stainless steel components
  • Anodized protection on aluminum components
  • Works with all LS water pumps (requires thermostat upgrade on early LS water pumps)


Adapter TypeWater Neck
ApplicationGM LS Engines
Emission Code5
Product TypeAdapter
Part NumberLS0005ERL


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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        Some parts are not legal for use in California or other states with similar regulations.