JE Pro Seal Head Gasket - 100mm Bore / 1.0mm Thick | 2002+ Subaru EJ25/EJ257 (SB1001-039)

JE Pistons

Give us a call to get the best prices and parts for your build. Or, just call us with a cool racing story...either way we're here.

Email -

Phone 1-888-627-3736

Fits Your:
Expected Delivery by , when ordered within hrs and mins
Phone  Contact us for availability!

Earn  $1.60 In MAP Rewards!

Pro Seal MLS Head Gaskets by JE Pistons

Every JE Pro Seal Head gasket utilizes the best raw materials available such as AISI 304 Stainless Steel. State of the art processes such as in-line laser cutting and multi-stage embossing technologies are utilized to ensure the highest level of quality available. In addition, every layer of our Multi-Layered Steel gaskets is invididually cut and formed to optimize performance.

Proprietary Coating Technologies: Multiple layers are used to provide the ultimate seal between the head and block mating surfaces. These coatings will normally eliminate the need for additional deck surfacing. Our coating processing provides 100% encapsulation of all exposed metal, far superior to other products that leave exposed raw steel on the edges. The layers include fluoroelastomer (FKM) for extreme temperature and chemical resistance. This technology provides superior conformability, oxidation resistance, and better removal, even after extreme temperature exposure.


  • Multilayer Stainless Steel Head gasket
  • Embossed and tempered
  • Long service life
  • Proprietary 4 step coating process

Please Note: Only ONE gasket is included with purchase. TWO gaskets are required.


  • 2015 - 2017 Subaru WRX STi
  • 2004 - 2014 Subaru Impreza WRX STi
  • 2006 - 2014 Subaru Impreza WRX
  • 2002 - 2005 Subaru Impreza WRX w/ EJ25
  • 2005 - 2012 Subaru Legacy GT
  • 2004 - 2013 Subaru Forester XT


  • Gasket Bore(mm) - 100 mm
  • Gasket Bore(in) - 3.937 Inches
  • Gasket Thickness(mm) - 1.00 mm
  • Gasket Thickness(in) - .039 Inches

What's In The Box?

  • 1 - JE Pro Seal Head Gasket


  • Manufacturer's Warranty

Customer Reviews

Based on 3 reviews
Great product

I just installed it last weekend and it fit great I would recommend it to other people

Luke Stubbs

Amazing customer service, FAST shipping, IN STOCK PRODUCTS!!!

JE ProSeal EJ

Hands down the best HGs money can buy for EJ motors. Run these with upgraded head studs and run more boost then you think possible. The coating is very durable, doesn't stick to machined surfaces like OE style MLS gaskets. You can tear down and wipe off without having to scrape crap off the deck surfaces. The coating is very forgiving of poor RA (finish) on sealing deck surfaces as well. Wont seal an out of spec or warped surface but will likely seal up a questionably finished surface. For guys running 1/2 studs, your studs will thread into the center holes on the gasket, studs will slide right through the outer 4 holes. No need to modify the gasket with 1/2" studs. I use these with 1/2" ARP studs and an o-ringed firing deck.