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SKU: F1524P
Ferrea Subaru EJ20 37mm 5.97mm 104.6mm 19 Deg S-Flo +1mm Competition Plus Intake Valve - Set of 8 for 2002-2005 Impreza WRX
Ferrea Competition Plus intake valves upgrade Subaru EJ20 DOHC engines with a set of 8 high-flow replacements. Designed for 2002-2005 Impreza WRX and similar EJ20 builds these 37mm valves fit ported or stock heads. S-Flo technology and +1mm length increase airflow and support high-RPM performance.
Key Features
- 37mm Valve Head: Larger diameter boosts intake airflow for more power in turbocharged EJ20 applications
- 5.97mm Stem Diameter: Provides exact OEM-match strength with reduced weight for faster valve action
- 104.6mm Overall Length: +1mm intake extension accommodates spring adjustments in performance heads
- 19-Degree Seat Angle: Precision 19° x 30° x 60° angles ensure reliable sealing under extreme boost pressure
- S-Flo Technology: Patented swirl-flow design directs air efficiently into combustion chamber for gains across RPM range
Product Notes
- Intended for competition and high-performance EJ20 engine rebuilds
- Pair with Ferrea springs retainers and seals for full valvetrain reliability
- Packaged securely to prevent damage during transit
Installation Notes
- Professional installation recommended.
- Verify and adjust valve spring installed height for +1mm length
- Direct fit in EJ20 DOHC heads uses stock guides and hardware
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002-2005 | Subaru | Impreza | WRX |
| 1999-2001 | Subaru | Impreza | RS |
| 1998-2002 | Subaru | Forester | S/T |
| 1993-2000 | Subaru | Impreza | Base/L |
| 1994-1998 | Subaru | Legacy | GT/Base |
Why Choose Ferrea?
- Valves power wins in Formula Drift NHRA and global racing series
- Advanced stainless steel withstands 1000+ degree exhaust gas temperatures
- CNC-machined in USA for micron-level tolerances and balance
Frequently Asked Questions
-
Q: Does this fit 2002-2005 Subaru Impreza WRX EJ205 heads?
A: Yes F1524P provides direct replacement for EJ20/EJ205 DOHC intake positions in WRX builds -
Q: What material construction offers heat resistance?
A: Competition Plus series uses proprietary stainless steel with enhanced fatigue strength for prolonged high-boost durability -
Q: What warranty coverage applies?
A: Ferrea provides limited lifetime warranty on manufacturing defects when installed by certified engine builder
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Original Ferrea box 8 x 6 x 4 inches
- Weight: 2 lbs
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