Closed Deck EJ257 V4 Long Rod Short Block EJ spring Kits Each breather cap has two

Each breather cap has two 3/8 NPT holes for fittings

0L/1994cc H 4 Turbocharged DOHC

GSC 33mm +1 Superalloy Exhaust Valves Part Number 2017

The goal of this product is simple

and set about making just that

Closed Deck EJ257 V4 Long Rod Short Block EJ spring Kits Each breather cap has twoThis 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 block in the known problem areas 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