PAC Racing Springs PAC-R317-16 300 Series 10-Degree Chromoly Valve Spring Retainers, Dual Spring, Set of 16

Upgrade your valvetrain with PAC Racing Springs PAC-R317-16 valve spring retainers, engineered for demanding performance applications. These 300 Series retainers are manufactured from durable chromoly steel to provide reliable strength and consistent spring control under high-load conditions. The 10-degree design is compatible with corresponding valve spring and retainer assemblies, helping support accurate valve motion and dependable valvetrain operation.
The PAC-R317-16 set features stepped outer diameters measuring 0.990 inch and 0.700 inch, making it suitable for dual-spring configurations that require precise component fitment. Designed for performance-oriented engine builds, these retainers help maintain spring alignment while resisting wear during repeated high-rpm cycles. Their steel construction offers a practical balance of durability and performance for racing, high-performance street, and competition applications.
Each package includes 16 PAC Racing Springs 300 Series valve spring retainers. Verify spring, valve, lock, and retainer compatibility before installation to ensure proper assembly and operating clearance. With its application-focused design and trusted PAC Racing Springs construction, the PAC-R317-16 is a reliable choice for builders seeking consistent valvetrain performance and long-term durability.

Features:

• Brand: PAC Racing Springs

• Part Number: PAC-R317-16

• Series: 300 Series

• Retainer Type: Valve spring retainer

• Design: 10-degree stepped retainer

• Outer Diameter Steps: 0.990 inch and 0.700 inch

• Spring Configuration: Dual spring

• Material: Chromoly steel

• Quantity: Set of 16

• Application: Performance and racing valvetrain assemblies