Blue Devil Head Gasket Sealant (32 oz.) - 6 Pack

Blue Devil Head Gasket Sealant (32 oz.) - 6 Pack
Item #:BLU38386-6PK
Availability:Usually ships the next business day
Our Price:$308.70
Ground Shipping Only. No PO Boxes
  • Does not harm your vehicles engine

  • Safe and easy to use

  • Permanent repair



  • Cooling system must be clean and free
    flowing before applying the sealer

  • Remove thermostat and flush cooling system
    using a radiator flush and then flush with water

  • Fill cooling system with water

  • Leave enough room for the recommended amount
    of BlueDevil that shows applications on the bottle

  • Engine must be cold before you begin

  • Remove the radiator cap and start the engine while cold, then turn heater to Max

  • While the engine idling, pour BlueDevil into the radiator slowly
    (take 1 minute pour time for entire bottle – 30 seconds for 1/2 bottle)

  • AAfter pouring BlueDevil slowly, let vehicle idle with cap ON for 50 minutes

  • You do not need to flush the system a second time after process is complete

  • Let engine cool before installing new thermostat

  • Drain enough fluid to refill with compatible antifreeze




  • "Overall experience is very good, prices are decent, and of course I'm glad that you guys open for us during this crisis, recommending website." (4/11/20)

  • "1st time shopping at Auto Barn. Shopping was easy and pain free." (5/10/20)

  • "Auto Barn had exactly what I was looking for and finding it was a "snap" (5/9/20)

  • "All great-price, delivery time" (5/7/20)

Read All Testimonials