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The ATI crankshaft damper is a steel 7.074-inch, three-ring damper for the 1987 Buick Grand National turbo V6, configured for external balance. It matches the groove and balance characteristics specified for that turbocharged Buick application. This damper is intended as a correct-fit replacement for Grand National owners needing the ext-balanced three-ring damper configuration.
ATI Damper - 7.074in - Steel - 1987 Buick Grand National Turbo V6 - Ext Bal - 3 Ring
