Description
Engine builders working with 1999-2012 Ford 4.6L/281 5.4L/330 V8 can use this Race Series intake valve family to choose the required valve dimensions while staying within the correct Manley application group. The parent listing is distinguished by Stainless Steel / Set of 8, which should be cross-checked against the rest of the engine combination.
The correct 1999-2012 Ford 4.6L/281 5.4L/330 V8 valve is the one that matches the finished head. Stem clearance, seat contact, installed height, spring package, and keeper location should all be checked during assembly.
Key Product Details
- Application: 1999-2012 Ford 4.6L/281 5.4L/330 V8
- Manley Series: Race Series
- Valve Position: Intake
- Title Specification: Stainless Steel / Set of 8
- Product Family Detail: Race Series application focus
- Manufacturer Part Number: 11639-8
Package Quantity
Set of 8 valves. The selected configuration is supplied as a 8-piece valve package. This quantity applies to the selected Manley SKU family shown on this product page.
Selection & Fitment Notes
Use the finished cylinder-head setup as the authority for selection. Oversize valves or alternate lengths may require machining and can affect installed height and valvetrain geometry.
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.