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Mopar V-Belt Design Vibration Damper for 81-90 Jeep Wrangler YJ
Description
A specially designed vibration damper also known as a harmonic balancer is required and sold separately. They have machined notches that the fuel injection computer sensor reads to accurately deliver the proper amount of fuel at the precise moment. There is a damper for a V belt or a serpentine belt design. This is essential to the proper operation of the Multi-Port Fuel Injection Kit.