These Moroso harmonic balancer tools use a pilot stud; which keeps the harmonic balancer perpendicular to the crankshaft's centerline; for a bind-free installation. Using a thrust bearing and protective washer; the drive nut can rotate freely; allowing the balancer to be pressed on easily. Universal tool that fits most engines including Chevrolet; Ford; Mopar; KB Hemi; Pontiac; Oldsmobile and Buick.
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