These BBK Performance polyurethane 79-04 Mustang front spring isolators are recommended to be used when installing lowering springs on your 79-04 Ford Mustang. Overtime the factory rubber isolators will dry out, crack and eventually turn to dust causing the springs to then rub against the bare metal control arms which will cause harsh vibration noises to transmit through the vehicle's chassis when driving. These BBK polyurethane front spring Isolators are direct replacements for the factory OEM isolators and these will not dry out or crack. BBK Spring Isolators are available for the front and rear springs Part# 2545 Front Part# 2546 Rear. All BBK Performance parts are backed by a 1-YEAR manufacturer’s warranty from the original date of purchase. An optional extended warranty is also available - giving you an additional 2 or 3 years from original date of purchase. Costs for the extended warranty option can be viewed when the item is added to your cart. The manufacturer’s warranty is based on normal use and installation of each product.. Durable Polyurethane Material - Direct Replacement - Sold in pairs - Front Isolator Kit 4pcs. 1979-2004 MUSTANG FRONT COIL SPRING ISOLATOR KIT (PAIR) POLYURETHANE.. 1979-2004 MUSTANG FRONT COIL SPRING ISOLATOR KIT (PAIR) POLYURETHANE. BBK 86-04 Mustang Front Spring Isolators - Polyurethane. Gripp® Polyurethane Coil Spring Isolators; Pair;. Gripp® Polyurethane Coil Spring Isolators. Coil Spring Insulator. CoilSprngInsulator. Made In The USA. BBK Bushings. Bushing Kit. Bushings

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