Supertech Black Nitride Intake Valves +1mm Subaru EJ20 / EJ25 Turbo WRX / WRX STI

Supertech Black Nitride Intake Valves +1mm - Subaru EJ20 / EJ25 Turbo - WRX / WRX STI

Supertech black nitride intake valves for the turbocharged EJ20 and EJ25 DOHC engines in the Subaru WRX and WRX STI, Forester GT / XT and Liberty GT. They are made from 21-4N stainless steel, and the black nitride surface treatment hardens the stem and lowers friction in the guide, which helps the valve and guide last on a hard-working engine. The head is +1mm oversize (37.00 mm), for heads with oversize or recut valve seats.

Options: set of 8 (SIVN-1014-8) or single (SIVN-1014). Most builds need the set; the single valve is for replacing one.

Note: Oversize valves need the valve seats machined to suit. Not for the 2015-on WRX (VA), which has the FA20 engine. Installation by a professional engine builder is recommended.

Features

• Stainless Steel 21-4N intake valve
• Head diameter 37.00 mm (+1)
• Stem diameter 5.96 mm
• Overall length 104.35 mm (standard)
• Single-groove keeper
• Black nitride surface treatment for a harder, lower-friction stem
• Sold as a set of 8 (every intake valve in the engine) or as a single valve

Pairs Well With

• Supertech Manganese Bronze Intake Valve Guides - Subaru EJ20 / EJ25 Turbo - WRX / WRX STI
• Supertech Polyacrylic Intake Valve Stem Seals - Subaru EJ20 Turbo / EJ25 - WRX / WRX STI / Forester / Liberty
• Supertech Dual Valve Spring Kit 82 lb - Subaru EJ20 / EJ25 Turbo - WRX / WRX STI
• ARP 2000 Head Stud Kit - Subaru EJ20 / EJ25 DOHC - WRX / STI (GC / GD / GE / GH / GR / GV / VA) / Forester (SF / SG / SH) / Liberty GT (BE / BH / BL / BP)

Shop more: Supertech

Need help choosing parts? Contact our team at sales@chicaneaustralia.com.au.