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About this part
What it does. Gmb Water Pump GMB 450-115-3380 is part of the cooling system that carries engine heat away and holds the engine at operating temperature.
Symptoms that point to this part
- Temperature gauge climbing
- Coolant puddles under the car
- Heater blowing cold
- Sweet coolant smell
Fitment. Catalogued as fitting 2026 BMW M440i Xdrive Gran Coupe, 2026 BMW M440i Gran Coupe. Engine, sub-model and trim can narrow fitment further, so check those attributes on the listing before ordering.