QA1 7720-168 Stock Coil Spring Seat Insert Kit for Early GM Lower Control Arms

The QA1 7720-168 is a bolt-in coil spring seat insert kit required when retaining factory-style coil springs with QA1 aftermarket lower control arms on early GM applications. This adapter plate bridges the gap between QA1's performance control arm geometry and your existing OEM coil springs, allowing a straightforward upgrade without the need to purchase a full coilover conversion.

Key Features:

• Bolt-in installation — no cutting, welding, or permanent modifications required
• Symmetrical plate design — cannot be installed incorrectly, simplifying the installation process
• Engineered specifically for use with factory-style coil springs on QA1 lower control arm kits
• Compatible with QA1 control arm part numbers 52319, 52337, 52419, and 52437
• Built from quality materials to QA1's performance standards

This spring seat insert is a required component when building a QA1 lower control arm suspension system and choosing to retain stock coil springs rather than upgrading to a QA1 Pro Coil coilover system. It ensures proper spring seating and alignment within the lower control arm pocket.

Compatible QA1 Control Arm Kits: 52319, 52337, 52419, 52437