Original BMW Coolant Reservoir to Radiator Hose for X5 and X6 50i, M, and ActiveHybrid (2008–2014)

Running between the coolant reservoir and the radiator, this Original BMW coolant hose serves the E70 X5 xDrive50i and X5 M along with the E71 and E72 X6 models. As the engine warms and coolant expands, excess coolant travels through this hose into the reservoir. As the engine cools, coolant flows back to the radiator, which holds the system at its proper level. A leak at this hose lets coolant escape and can lead to overheating. The hose weighs 377 grams, is made in Germany, and is sold as one piece.

Original BMW Parts carry a 24-month parts warranty.

BMW calls this part a coolant hose and has produced it since July 2008. One part number covers both V8 engine families in these models. The N63 applications are the facelift E70 X5 xDrive50i, the X6 xDrive50i, and the E72 ActiveHybrid X6. The S63 applications are the X5 M and X6 M. On the X5, BMW applies the hose only to the facelift E70 and the X5 M, which matches the 2010–2013 range. The X6 coverage runs from the 2008 launch through 2014.

Technical Details

• Manufacturer: BMW, Original BMW Parts
• Part number: 17-12-7-576-369
• BMW name: coolant hose
• Route: coolant reservoir to radiator
• Engines: N63 and S63
• Weight: 377 g (0.8 lb)
• Production start: July 2008
• Sold as: one piece
• Made in Germany
• Warranty: 24 months

Common Questions

What symptoms point to a bad reservoir hose?
Coolant leaks and overheating are the main signs. A faulty hose can also turn on the check engine light through the coolant temperature and level monitoring.

Does this hose fit the X5 M and X6 M?
Yes. BMW applies it to the S63-powered X5 M and X6 M as well as the N63 50i models.

Is the ActiveHybrid X6 covered?
Yes. The E72 ActiveHybrid X6 uses this same hose.

Fitment & Compatibility

Use the fitment table below to confirm year, make, model, submodel, and any notes tied to your exact vehicle. Pay close attention to engine, chassis, position, and option-specific details before ordering. PMB Performance can confirm this against your VIN, backed by more than 20 years of parts and fitment work.