4.6L - 32 Valve Valve Stem Size: 0.274 Diameter(A): 0.895 Inn Step Diameter: 0.575 References: Beehive Spring. - 7 Degree Pro CNC Retainer. Ferrea Racing Spring #S2008. To be used with OEM Valve Lock
4.6L/5.4L - SOHC V8 - 24 Valve ValveStem Size: 0.235 Diameter(A): 0.9 Inn Step Diameter: 0.56 References: Beehive Spring. - 7 Degree Pro CNC Retainer. Ferrea Racing Spring #S2007. To be used with OEM Valve Lock
4.6L - 16 Valve Valve Stem Size: 0.274 Diameter(A): 0.925 Inn Step Diameter: 0.625 References: Beehive Spring. - 7 Degree Pro CNC Retainer. Ferrea Racing Spring #S2010 and #S2011. To be used with OEM Valve Lock
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