Outfront Motorsports 575 Complete Cylinder Head Package B25 Heads Oiling it tightens the crankshaft cavity

it tightens the crankshaft cavity from opening up or the case halves shifting

L GRADE : L/RHD WAGON 1990

and turn up higher boost pressures

Symmetrical 4-1 design maintains consistent and high velocity exhaust gas flow as RPMs rise

It is compatible with all known fuels

Outfront Motorsports 575 Complete Cylinder Head Package B25 Heads Oiling it tightens the crankshaft cavityThe Outfront Motorsports 575 Cylinder Heads are the perfect entry level replacement heads if you had a failure requiring you to completely replace heads or if you just want brand new heads outright. These heads are a great option for your basic bolt on engines up to 575 BHP. The Outfront 575 Heads start with new OEM Genuine Subaru head castings. A multi angle valve job is performed as well as a fresh resurface. The heads go through multiple cleaning