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EJ Coolant Install

Needed tools:

  • Clean drain pan for coolant

  • 12mm Hex Driver

  • 1″ or 26mm Socket or wrench

  • Long ratchet or breaker bar

  • Adjustable wrench

  • 5/16 socket and ratchet or screwdriver

Pre-install Inspection:

  • Note if the heater hoses are close to or touching the steering shaft. We’ve seen several times where engines were removed and replaced with the hoses were routed incorrectly. Typically if they are backwards, one will be very close to the steering shaft. 


How to install:

  • Prepare a clean pan or bucket to catch coolant

  • Using a 12mm Hex Drive, remove the plug from the rear of the driver’s side head. This sometimes requires some heat since there’s thread sealer on there. 

  • Let the coolant drain until it stops

  • Thread the provided fitting into the head. Take care to make sure the crush washer is on there.Tighten with a 1″ or 26mm socket or wrench. 

  • Thread the AN hose end on the AN fitting you installed in the head

  • Tighten hose end with adjustable wrench or 6AN wrench 270-350 in-lb or 30-40 N-m is the proper torque. They don’t need to be super tight.

  • Cut the heater hose that goes to the black pipe to the water pump

  • Insert the cooling kit T into the heater hose where it is cut. Don’t forget the hose clamps.

  • Tighten the hose clamps

  • Refill the coolant, let the car idle with the heat on hot and bleed the system of air bubbles

  • Enjoy more reliability