Original BMW B58 Coolant Hose Flange for BMW 2, 3, 4, 5, 6, and 7 Series, X3 M40i, and X4 M40i (2016–2021)

Built for the B58 inline six, the Original BMW coolant hose flange 11-11-8-619-408 is the plastic connector that joins a coolant hose to the engine on 2016–2021 BMW 2, 3, 4, 5, 6, and 7 Series models and the X3 M40i and X4 M40i. BMW names it simply "connector" and began production of this number in July 2015. A flange like this gives the hose a fixed, sealed attachment point so coolant can move between the engine, radiator, and heater core without escaping. This version is plastic and is sold as a single piece.

Original BMW Parts carry a 24-month parts warranty.

BMW ties this number to the B58 engine, so one connector serves the whole family: the F22 and F23 M240i, F30 Facelift 340i, F34 Facelift 340i GT, F32, F33, and F36 440i, G30 and G31 540i, G32 640i Gran Turismo, G11 and G12 740i, G01 X3 M40i, and G02 X4 M40i. A 340i and a 540i take the same part, which keeps ordering simple for shops working on several B58 cars. When picking the right flange, the deciding detail is the engine, not the body style.

Technical Details

• Manufacturer: BMW
• Part number: 11-11-8-619-408
• BMW part name: connector
• Material: plastic
• Engine: B58
• Production start: July 2015
• Sold individually as one piece
• Warranty: 24 months on Original BMW Parts

Common Questions

What are the signs of a failing coolant hose flange?
Visible coolant leaks at the connection are the most common sign. If the damaged flange disrupts coolant flow, the engine can overheat and trigger the temperature warning light.

Do the 340i and 540i use the same flange?
Yes. Both use the B58 engine, and BMW applies this one number to both.

Ask PMB about the other B58 cooling parts you may need for the same repair.

Fitment & Compatibility

Compare your production year and trim against the table below. Send your VIN and PMB Performance will confirm the fit, drawing on more than 20 years in the trade.