Manley 03263-50 Manley Valve Spring Shims Valve Spring Retainers Installation is straightforward with basic

Installation is straightforward with basic hand tools and standard mechanical knowledge

For T5-swapped Mustangs

Part 53058 is configured for its specific application with attention to fitment requirements

SKU 824258 is backed by the manufacturer's quality guarantee and our satisfaction commitment

Manley 03263-50 Manley Valve Spring Shims Valve Spring Retainers Installation is straightforward with basicThe Manley 03263 50 Manley Valve Spring Shims provide the required spring pressure for aggressive cam profiles without coil bind or surge at high RPM. Manley Professional valve springs are wound from proprietary wire stock and heat set to prevent pressure loss over time. Part 33282 is configured for its specific application with attention to fitment requirements. Each spring is tested for installed height pressure, open pressure, and coil bind