Closed Deck V4, New Case Halves (Outright) Head Studs maximum variance is only 5

maximum variance is only 5 degrees from the most bent to the least bent runner

Throw out Bearing Included: Yes

New OEM Subaru Heat Treated Crankshaft ·

Fits ALL turbo EJ20 motors (with EJ25 pan)

Closed Deck V4, New Case Halves (Outright) Head Studs maximum variance is only 5This closed deck block design has been proven to withstand extreme boost levels resulting in high cylinder pressures without the worry of cracking a sleeve. The billet material that reinforces the combustion area has been further optimized with our V4 closed deck making it a far superior product to any sleeved block. With a closed deck block the stock sleeves are still in place eliminating all risk of dropping sleeves and pushing coolant that you have