Outfront Motorsports New 575 EJ257 Hybrid 2.5L Short Block For EJ20 Heads LGT/OBXT 2005-2009 4 port Boost control soldenoids

4 port Boost control soldenoids are commonly used for big boost applications

While some might find that the beehive spring design is new it has been used commonly in many OE engines as well as in all of the NASCAR and F1 engines of today

A major advantage of conical springs vs

Simple ECU flashing with gauge package

The casting removes several welds

Outfront Motorsports New 575 EJ257 Hybrid 2.5L Short Block For EJ20 Heads LGT/OBXT 2005-2009 4 port Boost control soldenoidsThis Block Is Our Base Non Closed Deck (Semi Closed) EJ257 Short Block With Forged Internals for EJ20 Heads. Power Rating is 575 BHB This engine consists of the following parts: NEW EJ257 case halves Forged Pistons Outfront Spec CP Forged Pistons (26cc) for Use W EJ20 Heads Outfront Motorsports H Beam Rods King Performance Bearings New OEM Subaru Black Nitrite Crankshaft Rear Covers, Rear Seal, and Pin Plugs Included!!!