The PAC Racing PAC-1234X is the same beehive-style ovate wire valve spring as PAC's 1234X-16 set, sold individually for anyone who only needs to replace one spring rather than a full set of 16. It remains a direct drop-in fit for Gen 1 and 2 Ford 5.0L Coyote engines and is commonly used to replace a damaged spring without disturbing the rest of the valvetrain.

PAC Racing Springs PAC-1234X RPM Series Beehive Valve Spring Features:

• Direct drop-in fit for Gen 1 and 2 Ford 5.0L Coyote engines, including the factory or Boss valve spring locations
• Ovate wire beehive design distributes stress evenly on opposing sides of the wire for improved fatigue life
• 0.848 in. top / 1.021 in. base outside diameter with a 240 lb/in. spring rate, rated to 0.575 in. of valve lift
• 0.941 in. maximum coil bind height
• Built from PACaloy super clean wire, heat-treated in-house, and finished with PAC's multi-peen and Nano-Peen processes for extended service life