Supertech Black Nitride Intake Valves +1mm
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Supertech Black Nitride Intake Valves +1mm - Subaru EJ25 SOHC - Forester / Impreza / Liberty / Outback
Supertech black nitride intake valves for the non-turbo EJ25 SOHC engines (EJ251, EJ252 and EJ253) in the Subaru Forester, Impreza RS, Liberty and Outback 2.5. 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.
Options: set of 8 (SIVN-1025-8) or single (SIVN-1025). Most builds need the set; the single valve is for replacing one.
Note: For the non-turbo EJ25 SOHC (EJ251 / EJ252 / EJ253) only. Installation by a professional engine builder is recommended.
Features
- Stainless Steel 21-4N intake valve
- Head diameter 37 mm (+1 mm)
- Stem diameter 5.96 mm
- Overall length 120.60 mm
- 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 Polyacrylic Intake Valve Stem Seals - Subaru EJ20 Turbo / EJ25 - WRX / WRX STI / Forester / Liberty
- Supertech Valve Locks 6mm 6 Degree - Subaru EJ20 Turbo / EJ25 - WRX / WRX STI / Forester / Liberty
- GSC Power-Division Manganese Bronze Intake/Exhaust Valve Guide - Subaru EJ20/EJ25 SOHC
Shop more: Supertech
Need help choosing parts? Contact our team at sales@chicaneaustralia.com.au.
Product
- Brand
- Supertech
- Part
- Intake valve
- Part number(s)
- SIVN-1025-8, SIVN-1025
Details
- Material
- Stainless Steel 21-4N
- Head diameter
- 37 mm (+1 mm)
- Stem diameter
- 5.96 mm
- Overall length
- 120.60 mm
- Groove
- Single Groove
- Engine
- EJ25 SOHC
Contents
- Set of 8: 8 x Supertech black nitride intake valves
- Single: 1 x Supertech black nitride intake valve
No instructions available for this product.

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