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GM Brand King Bearings Competitor Interchange Part Number 5M909H-021 MS-909H 139M Bearing Class Non-Race Bearing oversize 0
The G4 KnockLink's microprocessor continuously scans the knock signal and warns for any knock occurring
Part Number: AF542-12S
Filter Height: 5 in (152 mm)
ATI Super Damper Standard Harmonic Balancers (ATI-918376) Speed Nuts GM Brand King Bearings CompetitorPatented ATI Super Damper standard harmonic balancers are the only crankshaft dampers designed exclusively for high performance engines. Inner and outer shells are available in aluminum or steel, and contain a steel inertia weight. The inertia weights have six (2 ring design) or eight (3 ring design) computer machined grooves to retain the proper durometer O rings (dyno tested for each application). Whether you race or just drive on the street, ATI
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