PAC Racing Springs Valve Spring Shim Set PAC-S185-16, 0.030-Inch Thick, 1.500-Inch OD, 0.570-Inch ID, Steel, 16-Piece

PAC Racing Springs valve spring shims are designed to provide precise spring seat adjustment and consistent installation height in high-performance valvetrain applications. Part number PAC-S185-16 includes 16 steel shims manufactured with a 0.030-inch thickness, a 1.500-inch outside diameter, and a 0.570-inch inside diameter. The shims help establish the correct installed spring height while supporting proper valve spring positioning and reliable valvetrain operation.

Made from durable steel, these PAC Racing Springs shims are suited for engine builders, performance enthusiasts, and professional technicians who require dependable components during cylinder head and valve spring assembly. Their accurate dimensions allow them to be used for fine-tuning spring setup and achieving the desired relationship between spring height, pressure, retainer position, and valve lift. Proper selection and installation should be based on the specific cylinder head, valve spring, retainer, and engine combination.

The PAC-S185-16 set provides a practical solution for applications requiring uniform shim thickness across multiple valve positions. Each shim is formed for consistent fitment and is intended for use with compatible PAC Racing Springs components and other properly matched valvetrain hardware. Always verify spring seat dimensions and manufacturer recommendations before installation to ensure correct clearance and operating geometry. This set is not restricted for air shipment and does not require truck freight.

Features:

• Brand: PAC Racing Springs

• Part Number: PAC-S185-16

• Product Type: Valve spring shim set

• Material: Steel

• Thickness: 0.030 inch

• Outside Diameter: 1.500 inches

• Inside Diameter: 0.570 inch

• Quantity: 16 shims

• Application: Valve spring installed-height adjustment and spring seat positioning

• Shipping Classification: Not air restricted; truck freight not required