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This CP Pistons piston oil ring is specified for 1978–1987 Buick Grand National engines and is offered as the oil-control ring for rebuilds or engine servicing. Supplied by CP Pistons for the listed Grand National years, it’s intended for use when replacing worn rings during maintenance to restore appropriate oil control in the piston ring pack.
CP Piston Oil Ring for 78-87 Buick Grand National
