• IAG Performance ARP 1/2" Head Stud Set for Subaru EJ25, FA20, and FA20 DIT
  • IAG ARP 1/2" Head Stud for Subaru EJ25, FA20, and FA20 DIT
  • IAG Performance ARP 1/2" Head Stud for EJ25, FA20, and FA20 DIT
  • IAG Performance ARP 1/2" Head Stud Nut for Subaru EJ25, FA20, and FA20 DIT
  • IAG Performance ARP 1/2" Head Stud Washer for Subaru EJ25, FA20, and FA20 DIT
  • IAG Performance ARP 1/2" Head Stud Set installed on a Subaru EJ25 and FA20

IAG Performance ARP 1/2" Head Stud Set for Subaru EJ25, FA20, and FA20 DIT

IAG-ENG-1700

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$549.99
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CA WARNING: Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead, which can cause cancer and reproductive harm. To minimize exposure, service the vehicle in a well-ventilated area, wear gloves, and wash your hands. For more information go to www.P65Warnings.ca.gov/motor-vehicle-parts.

The IAG Performance 1/2 Inch Head Stud Set is manufactured by ARP and is designed for use on high horsepower Subaru EJ25, FA20, and FA20 DIT engines. Due to the larger size of the head studs, a greater load can be placed on the fasteners and in turn it aids in preventing cylinder heads from lifting in race applications. The larger size of the head studs requires the case halves to be drilled and tapped. The cylinder heads will also require drilling to accept the larger studs.






Designed for EJ25, FA20, and FA20 Engines. Requires drilling and tapping.

Installation Instructions

PDF Guides

Fitment

IAG Performance ARP 1/2" Head Stud Set for Subaru EJ25, FA20, and FA20 DIT

$549.99
  • 5 stars: 1 (100%)
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D
David S.
Overkill

Beautiful hardware. Probably overkill for my current build but an upgraded turbo isn't far down the road.

Y
Yevgheniy

What is the difference between these pins IAG-ENG-1711 and IAG-ENG-1700?

Customer

The head stud diameter is the difference, 14mm versus 1/2in

C
Chris

The instructions provided only include the torque specs used on the EJ25. Are they the same for the FA20DIT?

Customer

Correct

J
John S.

Are these made from inconel 625+ or not?

Customer

These are ARP 2000 not 625+

O
Obidio P.

Is this kit good enough to handle 650 WHP?

Jackie W.

Correct, we use these successfully in our 800BHP long block which is about 650WHP.

G
Gabriel R.

Are this studs the custom age 625+? or another from ARP?

Customer

These are made for us in the 1/2" size from ARP

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