PAC Racing Springs PAC-R401-16 400 Series Titanium Valve Spring Retainers, 10-Degree, Triple Spring, Set of 16

Upgrade your valve train with PAC Racing Springs PAC-R401-16 valve spring retainers, engineered for high-performance 400 Series applications. These lightweight titanium retainers feature a 10-degree design and are intended for triple-spring setups, helping provide dependable spring control and reduced valvetrain mass in demanding racing and performance engine environments. The set includes 16 retainers for a complete installation.
The PAC-R401-16 retainers feature stepped outside diameters of 1.185 inches, 0.865 inches, and 0.635 inches to support compatible spring and retainer combinations. Their precision-focused construction helps maintain proper spring alignment while supporting consistent operation at elevated engine speeds. Verify spring dimensions, installed height, lock compatibility, and cylinder head requirements before installation.
Designed for builders who require reliable, competition-oriented valvetrain components, these PAC Racing Springs titanium retainers offer a strong balance of low weight and durability. They are suitable for use with compatible triple valve spring assemblies and should be installed according to the engine builder’s specifications. Professional inspection and correct matching of retainers, locks, springs, and valve stems are recommended for safe and dependable performance.

Features:

• Brand: PAC Racing Springs

• Part Number: PAC-R401-16

• Application: 400 Series valve spring systems

• Material: Titanium

• Design: 10-degree valve spring retainer

• Spring Configuration: Triple spring

• Stepped Outside Diameters: 1.185 inches, 0.865 inches, and 0.635 inches

• Quantity: Set of 16