Blue Devil Rear Main Sealer (8 oz.) - 6 Pack

Blue Devil Rear Main Sealer (8 oz.) - 6 Pack
Item #:BLU00234-6PK
Availability:Usually ships the next business day
Our Price:$68.70
Ground Shipping Only. No PO Boxes

Blue Devil Rear Main Sealer permanently seals rear main leaks. Just add to engine oil to restore and seal the gaskets.




  • Guaranteed permanent seal

  • Restores dried, cracked,
    and shrunken rubber seals

  • Works in gas or diesel engines


How large of a leak does it repair?

Blue Devil will seal leaks in any fluid systems that are seeping or dripping.


How much do I use?

Use 1-8oz. bottle to treat leaks up to 8 quarts capacity.


How long does the repair take?

Start engine and drive vehicle or equipment to let Blue Devil circulate.
The repair is sealed while you drive (up to 2 days drive time).

Product Reviews for Blue Devil Rear Main Sealer (8 oz.) - 6 Pack

  • "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)

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