Torsion Spring Isolator. See link below for alternative Eaton Isolator.
Genuine OEM Supercharger Isolator LS9 LSA Engine 09-14 CTS-V Camaro ZR1 ZL1 CTSV
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Genuine OEM Supercharger Coupler Isolator Magnuson MP45 MP62 MP90 MP112 MP122
Genuine OEM Supercharger Rebuild Repair kit Jaguar Land Rover Range 5.0 47mm
Genuine OEM Supercharger Needle Bearings fits Nissan Xterra Frontier M62 Case
Genuine OEM Supercharger Oil Change kit 8oz Mini Cooper Mercedes Volkswagen Audi