PAC Racing Springs PAC-S138-16 Chromoly Valve Spring Retainers, .575-Inch Spring ID, Set of 16

PAC Racing Springs PAC-S138-16 inside valve spring retainers are designed to provide dependable support and alignment for high-performance valvetrain assemblies. Manufactured from durable chromoly steel, these spring seats help maintain proper spring positioning while supporting demanding engine operating conditions. The retainers feature a .575-inch spring inside diameter, a 1.270-inch outside diameter, and a .060-inch thickness for compatibility with the specified PAC Racing Springs application.
Supplied as a set of 16, these PAC Racing Springs C/M spring seats are well suited for complete engine builds, cylinder head upgrades, and valvetrain service where consistent component fitment is essential. Their inside-retainer design helps provide a stable interface between the valve spring and retainer, contributing to reliable spring control and accurate valvetrain operation.
The PAC Racing Springs PAC-S138-16 retainer set is intended for builders and technicians seeking durable replacement or performance-oriented valvetrain components. Verify spring, retainer, valve, and cylinder head compatibility before installation to ensure the proper fit and operating clearances for your application.

Features:

• Brand: PAC Racing Springs

• Part Number: PAC-S138-16

• Component Type: Inside valve spring retainer and spring seat

• Material: Chromoly steel

• Spring Inside Diameter: .575 inch

• Outside Diameter: 1.270 inches

• Thickness: .060 inch

• Quantity: Set of 16