EJ205 / EJ255 / EJ257 +1mm Intake Valve Set of 8 - 37mm

• 2004–2014 Subaru | WRX STI
• 2002–2010 Subaru | WRX

Upgrade the intake side of your Subaru EJ-series cylinder heads with the Brian Crower BC3604-S intake valve set. Designed for 2002-2009 WRX and 2004-2009 WRX STI applications using the EJ205, EJ255, or EJ257 engine, this set includes eight intake valves with a 37mm head diameter and a +1mm oversize configuration compared with the standard valve specification.

The Brian Crower BC3604-S valve set is intended for engine builds requiring increased intake valve capacity while retaining compatibility with the listed Subaru EJ engine platforms. The +1mm oversize design provides a larger intake valve head than standard equipment, making these valves suitable for performance-oriented cylinder head work when the appropriate machining, seat preparation, and clearance checks are completed by a qualified engine builder.

These valves are supplied as a complete set of eight for servicing the intake side of a four-cylinder engine. Confirm cylinder head specifications, valve seat condition, and valvetrain clearances before installation.

• +1mm oversize intake valves; 37mm head diameter
• For EJ205 / EJ255 / EJ257: 2002-2009 WRX, 2004-2009 WRX STI
• Set of eight intake valves
• Brian Crower part number BC3604-S

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