Closed Deck V4, New Case Halves (Outright) Head Studs JE's Coating process provides 100%

JE's Coating process provides 100% encapsulation of all exposed metal providing you with superior protection compared to other gasket brands

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Quicker engagement

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

If you own an EJ20 in a WRX

Closed Deck V4, New Case Halves (Outright) Head Studs JE's Coating process provides 100%This 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