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Tired of replacing Head Gaskets on your Subaru EJ20 / EJ25?

Erik Blume  September 18 2019

Tired of replacing Head Gaskets on your Subaru Subaru EJ20 / EJ25?

Consider MAP Ultimate Duty H11 Head Studs an insurance policy for your head gasket.

1001225_497032213705637_603403724_nLooking to make big power?

Don't like the idea of lifting your cylinder head and replacing head gaskets frequently?

With ratings over 1000HP, this is the ideal kit for you.

Not convinced? Let's look at the details!

If you're looking to make big power (proven over 1000+ WHP) but don't like the idea of lifting your cylinder head and replacing head gaskets frequently these are exactly what you need! These studs are manufactured specifically for us by A1 Technologies and utilize an H11 material that is much stronger than the typical 8740 chromoly and yields a tensile strength of 260,000 psi. They are also provisioned with a hex broach on the top of the stud enabling you to install them with the cylinder head on the car if necessary.

What is so different about these head studs?

At first glance these may appear to be similar to the other ARP and A1 Technologies head studs available on the market, but that is simply not the case. The MAP Ultimate Duty Head Studs include an additional feature known as a "dog point" (shown below) that seats the stud in the block and pre-loads the fastener for an accurate and repeatable torque sequence. Revised August 2012 to address concerns with thread length and dog point engagement. map-studs-detail dogpoint  

You've seen the details, now let us help you reach those power goals safely.

Purchase your MAP Ultimate Duty H11 Head Studs (MAP SUB-UDHS) today!

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1 comment

  • maperformance: November 10, 2015

    Tired of replacing Head Gaskets on your Subaru EJ20 / EJ25? http://t.co/UMKrE6oTnS

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