PAC Racing Springs PAC-R538-16 500 Series Titanium Dual Valve Spring Retainers, 10-Degree, Set of 16

PAC Racing Springs PAC-R538-16 valve spring retainers are designed for high-performance valvetrain applications that use 1.475-inch dual valve springs. Manufactured from lightweight titanium, these 500 Series retainers help reduce valvetrain mass while providing the strength and precision required for demanding engine builds. The 10-degree design supports compatible valve and spring configurations for reliable operation at elevated engine speeds.
The retainer features stepped outside diameters measuring 1.140 inches and 0.815 inches, providing proper spring location and compatibility with the specified PAC Racing Springs application. Its precision-machined construction promotes consistent spring alignment and helps maintain dependable valvetrain geometry. This set includes 16 retainers, making it suitable for a complete multi-cylinder engine installation or as a replacement set for an existing performance valvetrain.
PAC Racing Springs PAC-R538-16 retainers are intended for builders, engine professionals, and performance enthusiasts who require durable, lightweight components for competition, racing, and high-output street engines. Verify valve stem, lock, spring, and retainer compatibility before installation to ensure the correct fit and operating clearance. These titanium retainers are sold as a set of 16 and are engineered specifically for use with compatible 1.475-inch dual valve spring assemblies.

Features:

• Brand: PAC Racing Springs

• Part Number: PAC-R538-16

• Series: 500 Series

• Material: Titanium

• Retainer Type: Dual valve spring retainer

• Taper Angle: 10 degrees

• Spring Compatibility: Designed for 1.475-inch dual valve springs

• Stepped Outside Diameters: 1.140 inches and 0.815 inches

• Quantity: Set of 16