ACDelco 84949374 Front Coil Spring Insulator

The ACDelco 84949374 is a GM OE-quality front coil spring insulator designed to cushion and isolate the coil spring from the spring perch on the front suspension. This slip-type insulator reduces metal-to-metal contact, helping to minimize noise, vibration, and harshness (NVH) transmitted into the cabin.

Key Features:

• OEM-grade material — engineered rubber/urethane construction for durability and consistent performance
• Slip-type design — allows controlled movement between the spring and seat for smooth suspension travel
• Noise and vibration damping — isolates road impacts and reduces suspension-related NVH
• Direct OEM replacement — manufactured to original GM specifications for proper fit and function
• ACDelco OE Service quality — same quality standard as the part originally installed at the factory

Replacing worn or cracked spring insulators restores proper suspension geometry, eliminates clunking or squeaking noises from the front suspension, and helps protect the spring and chassis from premature wear. This is a recommended service item whenever struts, shocks, or coil springs are replaced.