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The Gates molded coolant hose for 2019–2021 Freightliner Business Class M2 with Detroit Diesel DD8 is a lower radiator‑to‑pipe molded hose that replaces the factory lower connection. This modular assembly restores proper coolant flow between radiator and pipework and is intended for maintenance or repair when the original hose shows wear. It preserves the intended routing to support dependable engine cooling.
Gates 19-21 Freightliner Business Class M2 Detroit Diesel DD8 Lower Rad To Pipe Molded Coolant Hose