PAC Racing Springs PAC-S103-16 Chromoly Valve Spring Retainers, 1.550-Inch OD, 0.770-Inch Spring ID, Set of 16

Upgrade your valve train with PAC Racing Springs PAC-S103-16 chromoly valve spring retainers, engineered for dependable performance in demanding high-performance and racing applications. These inside-style spring seats provide a precise interface between the valve spring and cylinder head while helping maintain consistent spring positioning during operation. The set includes 16 retainers for a complete V8 valve train installation.
Each retainer is manufactured from durable chromoly steel to provide strength and resistance to wear under high spring loads and elevated engine speeds. The 0.060-inch-thick design features a 1.550-inch outside diameter, a 0.575-inch inside diameter, and a 0.770-inch spring inside diameter. These specifications make the PAC-S103-16 a practical choice for compatible cylinder heads and valve spring combinations requiring reliable inside spring retainers.
Designed for professional engine builders, performance enthusiasts, and racing applications, PAC Racing Springs retainers support accurate valve train assembly and long-term durability. Verify spring seat, valve, and retainer compatibility before installation to ensure the correct fit and safe operating clearance. The PAC-S103-16 set combines proven chromoly construction with application-specific sizing for consistent valve train performance.

Features:

• Brand: PAC Racing Springs

• Part Number: PAC-S103-16

• Product Type: Inside valve spring retainer

• Material: Chromoly steel

• Retainer Thickness: 0.060 inch

• Outside Diameter: 1.550 inches

• Inside Diameter: 0.575 inch

• Spring Inside Diameter: 0.770 inch

• Quantity: Set of 16

• Application: High-performance and racing valve trains