The Supertech exhaust valve for Subaru WRX 2.0L applications is a single black nitrided replacement listed at 33 x 5.96 x 104.20mm with a +1mm head diameter. Offered individually, it provides an oversize head option finished in black nitride for targeted exhaust-side replacements on compatible WRX 2.0L engines.
Supertech Subaru WRX 2.0L 33x5.96x104.20mm +1mm Dia Blk Nitride Exhaust Valve - Single (D/S Only)