Spring Isolator 2.5in ID

The Spring Isolator 2.5in ID from EIBACH is a precision vibration isolation component engineered for demanding mechanical and automotive applications where noise, shock, and unwanted resonance must be controlled. This polyurethane isolator fits into engine mounts, suspension systems, and equipment brackets—anywhere OEM or aftermarket designers need to decouple movement and absorb impact energy while maintaining load-bearing capacity. Whether you're upgrading a classic restoration, tuning a high-performance vehicle, or servicing industrial equipment, this isolator delivers consistent damping performance across temperature and load cycles.

Constructed from durable black polyurethane, the Spring Isolator 2.5in ID features a 2.5-inch inside diameter bore, making it compatible with standard 2.5-inch diameter shafts, studs, or mounting hardware. Polyurethane's natural elasticity absorbs vibration frequencies while resisting oil, coolant, and UV exposure better than natural rubber, extending service life in harsh underhood and outdoor environments. The isolator's compact footprint—measuring 4 inches in overall length with a 0.5-inch wall thickness—allows installation in space-constrained mount locations without sacrificing structural integrity or isolation performance.

Technicians and enthusiasts rely on EIBACH spring isolators for engine rebuild kits, motor mount replacement sets, and vibration control upgrades on street rods, muscle cars, and performance platforms. Installation is straightforward—slide the isolator onto the shaft or stud, then secure the assembly into the mount bracket using the existing fasteners. This single-unit design simplifies inventory management and ensures consistent performance across multiple isolator positions, making it an economical choice for fleet maintenance, machine shop work, and DIY restorations where reliability and precision matter.