Valve springs with larger diameters require retainers to handle the higher pressures developed by the springs. COMP Cams steel retainers are precision machined from 4140 chromemoly steel and finished in black oxide. These precision retainers are specifically designed for positive location when combined with COMP Cams high-quality valve springs. For superior strength and ultimate stability, both 7° and 10° retainers and valve locks are available. Refer to the spring application chart on pages 293-303 for correct retainer part numbers for each COMP Cams valve spring. PartNumber : cca710-100 Description : Steel Valve Spring Retainers; Bulk, 100 Pieces Title : 710-100 Steel Retainers, 3-Valve Ford 4.6L Diameter 3 : N/A Angle : 7° Diameter 4 : N/A Spring Diameter : .959" Diameter 1 : .930" Diameter 2 : .630" Stem Size : Stock 2006-2008 Ford Crown Victoria Base V8.-cc Engine Components::Valve Springs, Retainers 2010-2011 Ford Crown Victoria Base V8.-cc Engine Components::Valve Springs, Retainers 2006-2011 Ford Crown Victoria LX V8.-cc Engine Components::Valve Springs, Retainers 2008-2011 Ford Crown Victoria Police Interceptor V8.-cc Engine Components::Valve Springs, Retainers 2008-2009 Ford Mustang Bullitt V8.-cc Engine Components::Valve Springs, Retainers 2006-2010 Ford Mustang GT V8.-cc Engine Components::Valve Springs, Retainers 2007-2008 Ford Mustang Shelby GT V8.-cc Engine Components::Valve Springs, Retainers 2003-2005 Lincoln Aviator Base V8.-cc Engine Components::Valve Springs, Retainers 2006-2007 Lincoln Town Car Designer Series V8.-cc Engine Components::Valve Springs, Retainers 2006-2010 Lincoln Town Car Executive V8.-cc Engine Components::Valve Springs, Retainers 2006-2011 Lincoln Town Car Executive L V8.-cc Engine Components::Valve Springs, Retainers 2006-2007 Lincoln Town Car Signature V8.-cc Engine Components::Valve Springs, Retainers 2006-2011 Lincoln Town Car Signature L V8.-cc Engine Components::Valve Springs, Retainers 2006-2011 Lincoln Town Car Signature Limited V8.-cc Engine Components::Valve Springs, Retainers 2006-2008 Mercury Grand Marquis GS V8.-cc Engine Components::Valve Springs, Retainers 2006-2011 Mercury Grand Marquis LS V8.-cc Engine Components::Valve Springs, Retainers 2004 Mercury Marauder Base V8.-cc Engine Components::Valve Springs, Retainers