Supertech Inconel Exhaust Valves +1mm
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Supertech Inconel Exhaust Valves +1mm - Subaru EJ25 DOHC - Liberty / Outback
Supertech Inconel exhaust valves for the non-turbo EJ25 DOHC engine (EJ25D) in the 1996-1999 Subaru Liberty and Outback 2.5. The Inconel-Nimonic alloy keeps its strength at the high exhaust temperatures that come with more boost, so the valve resists stretching and burning on a built engine. The head is +1.0mm oversize (33.00 mm), for heads with oversize or recut valve seats.
Options: set of 8 (SEVI-1015-8) or single (SEVI-1015). Most builds need the set; the single valve is for replacing one.
Note: Oversize valves need the valve seats machined to suit. For the non-turbo EJ25 DOHC (EJ25D) only, not the later SOHC EJ25. Installation by a professional engine builder is recommended.
Features
- Inconel-Nimonic exhaust valve
- Head diameter 33.00 mm (+1.0)
- Stem diameter 5.96 mm
- Overall length 108.35 mm (oversize length)
- Single-groove keeper
- Sold as a set of 8 (every exhaust valve in the engine) or as a single valve
Pairs Well With
- Supertech Viton Exhaust 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
Shop more: Supertech
Need help choosing parts? Contact our team at sales@chicaneaustralia.com.au.
Product
- Brand
- Supertech
- Part
- Exhaust valve
- Part number(s)
- SEVI-1015-8, SEVI-1015
Details
- Material
- Inconel-Nimonic
- Head diameter
- 33.00 mm (+1.0)
- Stem diameter
- 5.96 mm
- Overall length
- 108.35 mm (oversize length)
- Groove
- Single Groove
- Engine
- EJ25 DOHC
Contents
- Set of 8: 8 x Supertech Inconel exhaust valves
- Single: 1 x Supertech Inconel exhaust valve
No instructions available for this product.

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