Brian Crower BC3604-S Intake Valve, +1mm Over STD Tip 37mm) (Set of 8)

Intake Valve, +1mm Over STD Tip 37mm) (Set of 8) For 2002-2009 Subaru WRX / 2004-2009 STI EJ205 / EJ255 / EJ257

Brian Crower premium valves guides are made from manganese silicon aluminum bronze alloy and CNC machined to exacting tolerances. Brian Crower guides are resistant to cracking and corrosion, while reducing friction and insures high lubrication even at elevated engine temperatures and RPM's.