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 : cca799-1 Description : Steel Valve Spring Retainers; Single Piece Title : 799-1 Steel Retainers, Ford 4.6L 4V for 26123 Diameter 3 : N/A Spring Diameter : .943" Diameter 1 : .900" Stem Size : Stock Angle : 7° Diameter 2 : .570" Diameter 4 : N/A California Proposition 65 : WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov Compatible Lock : 7 Diameter 1 : 0.9 Diameter 2 : 0.57 Lock Angle : 7 Retainer Material : 4140 Chromemoly Steel Valve Spring Diameter : 0.943 Valve Stem Size : Stock 1996-1999 Ford Mustang GT V8.-cc Engine Components::Valve Springs, Retainers 2001 Ford Mustang GT V8.-cc Engine Components::Valve Springs, Retainers 2003-2004 Ford Mustang GT V8.-cc Engine Components::Valve Springs, Retainers 2001 Ford Mustang GT Bullitt V8.-cc Engine Components::Valve Springs, Retainers 2003-2004 Ford Mustang Mach I V8.-cc Engine Components::Valve Springs, Retainers 1996-1999 Ford Mustang SVT Cobra V8.-cc Engine Components::Valve Springs, Retainers 2001 Ford Mustang SVT Cobra V8.-cc Engine Components::Valve Springs, Retainers 2003-2004 Ford Mustang SVT Cobra V8.-cc Engine Components::Valve Springs, Retainers 2003 Ford Mustang SVT Cobra 10th Anniversary V8.-cc Engine Components::Valve Springs, Retainers 2000 Ford Mustang SVT Cobra R V8.5409cc Engine Components::Valve Springs, Retainers 1996 Lincoln Continental Anniversary V8.-cc Engine Components::Valve Springs, Retainers 1998-2002 Lincoln Continental Base V8.-cc Engine Components::Valve Springs, Retainers 1995 Lincoln Continental Diamond Anniversary V8.-cc Engine Components::Valve Springs, Retainers 1995 Lincoln Continental Signature V8.-cc Engine Components::Valve Springs, Retainers 1995-1997 Lincoln Continental Spinnaker Edition V8.-cc Engine Components::Valve Springs, Retainers 1996 Lincoln Mark VIII Anniversary V8.-cc Engine Components::Valve Springs, Retainers 1993-1995 Lincoln Mark VIII Base V8.-cc Engine Components::Valve Springs, Retainers 1997-1998 Lincoln Mark VIII Base V8.-cc Engine Components::Valve Springs, Retainers 1995-1998 Lincoln Mark VIII LSC V8.-cc Engine Components::Valve Springs, Retainers 2003-2004 Mercury Marauder Base V8.-cc Engine Components::Valve Springs, Retainers