Description
Manley packages these Race Flo intake valves for 2000-2003 Subaru WRX (EJ20) / 04 STI Intake around the measurements that matter during cylinder-head setup, rather than treating every valve size as a separate shopping path. The parent listing is distinguished by Part #11138-1, which should be cross-checked against the rest of the engine combination.
If the 2000-2003 Subaru WRX (EJ20) / 04 STI Intake cylinder head has been ported, fitted with oversized seats, or changed from its original valvetrain layout, confirm the required valve measurements after machining rather than using a stock-size assumption.
Key Product Details
- Application: 2000-2003 Subaru WRX (EJ20) / 04 STI Intake
- Manley Series: Race Flo
- Valve Position: Intake
- Title Specification: Part #11138-1
- Product Family Detail: Race Series application focus
- Manufacturer Part Number: 11138-1
Package Quantity
Sold individually. One valve is supplied per selected SKU. Order the intake or exhaust quantity required for the cylinder-head configuration being assembled. This quantity applies to the selected Manley SKU family shown on this product page.
Selection & Fitment Notes
Valve fitment should be verified from the cylinder head itself; check the required head size, stem size, overall length, seat work, and valvetrain geometry rather than relying on engine name alone.
Professional engine assembly and measurement are recommended. Product specifications should be confirmed against the selected Manley part number and the requirements of the exact engine build.