
Supertech Inconel Exhaust Valves for EJ WRX/STi
Vehicle Fitment:
2002-2014 Subaru WRX
2004-2021 Subaru STi
• For exhaust valves only.
| Fitment: | Size: | Includes: | Part Number: |
| Exhaust | +1mm Oversize 33.00mm • Stem Diameter 5.96mm • Length 104.7mm (std) |
8 Valves | SEVI-1014-8 |
| 1 Valve | SEVI-1014-1 | ||
| Exhaust *Sodium-Filled* |
Standard 32.00mm • Stem Diameter 5.95mm • Length 104.7mm |
8 Valves | SEVI-1010-HS-8 |
| 1 Valve | SEVI-1010-HS-1 | ||
| Exhaust *Sodium-Filled* |
+1mm Oversize 33.00mm • Stem Diameter 5.95mm • Length 104.7mm |
8 Valves | SEVI-1014-HS-8 |
| 1 Valve | SEVI-1014-HS-1 | ||
| Exhaust |
+1mm Oversize 33.00mm • Stem Diameter 5.96mm • Length 104.20mm (short) |
*Discontinued* | SEVI-1014/2 |
| Exhaust |
+.5mm Oversize 32.50mm • Stem Diameter 5.96mm • Length 104.2mm (short) |
*Discontinued* | SEVI-1012/2 |
The Inconel 751 Nickel Base Alloy material is used for exhaust valves in engines that reach very high temperatures and its use is growing with the application of turbos and superchargers.
Images are for reference.

Original: $37.76
-65%$37.76
$13.22More Images




Supertech Inconel Exhaust Valves for EJ WRX/STi
Vehicle Fitment:
2002-2014 Subaru WRX
2004-2021 Subaru STi
• For exhaust valves only.
| Fitment: | Size: | Includes: | Part Number: |
| Exhaust | +1mm Oversize 33.00mm • Stem Diameter 5.96mm • Length 104.7mm (std) |
8 Valves | SEVI-1014-8 |
| 1 Valve | SEVI-1014-1 | ||
| Exhaust *Sodium-Filled* |
Standard 32.00mm • Stem Diameter 5.95mm • Length 104.7mm |
8 Valves | SEVI-1010-HS-8 |
| 1 Valve | SEVI-1010-HS-1 | ||
| Exhaust *Sodium-Filled* |
+1mm Oversize 33.00mm • Stem Diameter 5.95mm • Length 104.7mm |
8 Valves | SEVI-1014-HS-8 |
| 1 Valve | SEVI-1014-HS-1 | ||
| Exhaust |
+1mm Oversize 33.00mm • Stem Diameter 5.96mm • Length 104.20mm (short) |
*Discontinued* | SEVI-1014/2 |
| Exhaust |
+.5mm Oversize 32.50mm • Stem Diameter 5.96mm • Length 104.2mm (short) |
*Discontinued* | SEVI-1012/2 |
The Inconel 751 Nickel Base Alloy material is used for exhaust valves in engines that reach very high temperatures and its use is growing with the application of turbos and superchargers.
Images are for reference.

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Product Information
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Description
Vehicle Fitment:
2002-2014 Subaru WRX
2004-2021 Subaru STi
• For exhaust valves only.
| Fitment: | Size: | Includes: | Part Number: |
| Exhaust | +1mm Oversize 33.00mm • Stem Diameter 5.96mm • Length 104.7mm (std) |
8 Valves | SEVI-1014-8 |
| 1 Valve | SEVI-1014-1 | ||
| Exhaust *Sodium-Filled* |
Standard 32.00mm • Stem Diameter 5.95mm • Length 104.7mm |
8 Valves | SEVI-1010-HS-8 |
| 1 Valve | SEVI-1010-HS-1 | ||
| Exhaust *Sodium-Filled* |
+1mm Oversize 33.00mm • Stem Diameter 5.95mm • Length 104.7mm |
8 Valves | SEVI-1014-HS-8 |
| 1 Valve | SEVI-1014-HS-1 | ||
| Exhaust |
+1mm Oversize 33.00mm • Stem Diameter 5.96mm • Length 104.20mm (short) |
*Discontinued* | SEVI-1014/2 |
| Exhaust |
+.5mm Oversize 32.50mm • Stem Diameter 5.96mm • Length 104.2mm (short) |
*Discontinued* | SEVI-1012/2 |
The Inconel 751 Nickel Base Alloy material is used for exhaust valves in engines that reach very high temperatures and its use is growing with the application of turbos and superchargers.
Images are for reference.





















