BBK Spring Isolator for 79-04 Ford Mustang Rear Polyurethane Replacement

BBK Spring Isolator for 1979–2004 Ford Mustang — Rear (Polyurethane) Upgrade: Replace worn, brittle OEM rubber isolators with durable BBK polyurethane rear spring isolators engineered for 1979–2004 Ford Mustangs. Ideal when installing lowering springs or restoring ride quality. Direct fit: Designed as an exact replacement for factory rear spring isolators — no modifications required. Durable material: High-density polyurethane resists drying, cracking and disintegration that plague OEM rubber parts. Noise & vibration reduction: Prevents metal-to-metal contact between springs and control arms to eliminate harsh vibration and squeaks. Long-lasting performance: Maintains shape and isolation properties under load and repeated use. Keep your Mustang quieter, smoother and properly isolated after lowering or during routine suspension maintenance. Also available for the front springs: Part# 2545 (Front). This listing: Part# 2546 (Rear).