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The Gates flexible coolant hose for 1980–1989 Mack MS Series 6-cylinder 5.5L diesel serves as an OEM-style upper water pump-to-pipe replacement. It restores correct routing and fit to maintain coolant flow within the engine cooling circuit and simplify service. Install this hose when renewing upper water-pump plumbing on the listed Mack diesel applications.
Gates 80-89 Mack MS Series 6-Cyl. 5.5L Diesel Upper Water Pump To Pipe Flexible Coolant Hose
