Manley Valve Spring Retainers are engineered using finite element analysis and CNC machined to exacting tolerances to deliver unmatched strength and performance. These retainers reduce valvetrain mass, improve RPM potential, and ensure superior valve control in the most demanding racing applications.
This Part Fits:
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1997-2000 | Ford | F-150 | Base |
| 2002-2003 | Ford | F-150 | Harley-Davidson Edition |
| 1999-2003 | Ford | F-150 | Lightning |
| 1996-2004 | Ford | Mustang | GT |
