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Description

OEM BMW Expansion Tank Return Hose 11531740649

This genuine BMW expansion tank return hose 11531740649 carries the coolant from the expansion tank back to the radiator. A hardened or cracked return hose is a classic cause of coolant loss and pressure problems on older BMWs; with this OEM hose the system is leak-free again and at the correct pressure.

The hose comes from BMW itself, made from heat-resistant rubber and plastic that can withstand the temperatures and pressure of a BMW engine for years. The fit is exactly original, so fitting is a matter of minutes.

Particularly handy when upgrading to an aluminium radiator without a built-in expansion tank: the original BMW expansion tank then remains in use and you need this return hose to complete the system.

Key benefits

• Genuine BMW OEM quality, part number 11531740649
• Heat-resistant material for a long service life
• Leak-free return of coolant to the radiator
• Perfect fit, direct installation
• Suitable for aluminium radiators without an internal expansion tank
• 2-year manufacturer’s warranty

Suitable for

Various BMW models with a separate expansion tank

• BMW E38 and E39 5 Series models
• Combination with original and aftermarket aluminium radiators without a built-in expansion tank
• Check part number 11531740649 using your VIN

Technical specifications

• Manufacturer: BMW (OEM)
• Part number: 11531740649
• Material: heat-resistant rubber / plastic
• Colour: black
• Application: return hose from expansion tank to radiator
• Warranty: 2-year manufacturer’s warranty

Fitting and delivery

Let the cooling system cool down, disconnect the old hose at the expansion tank and the radiator, fit the new hose with new clamps and bleed the system. Allow half an hour of work. The hose is supplied to order; the delivery time is 4 to 7 days.

The genuine BMW expansion tank return hose 11531740649: leak-free, heat-resistant and with the fit straight from the factory.

Why choose this OEM expansion tank return hose?

With coolant hoses, genuine parts pay for themselves: exact length, the right bends and rubber that can handle BMW temperatures. Especially with an aluminium radiator upgrade, you don’t want a universal hose that doesn’t quite fit.

Frequently asked questions

Will this hose fit my BMW?

Check part number 11531740649 in the BMW parts catalogue or send us your VIN.

Do I need this hose with an aluminium radiator?

Yes, if the new radiator has no built-in expansion tank and you continue to use the original expansion tank.

Are the hose clamps included?

Please contact us for the exact contents. Always use new clamps when fitting.

What is the delivery time?

The hose is supplied to order; allow 4 to 7 days.

Delivery outside the European Union: different shipping costs may apply. Don’t worry: we will email you as soon as possible after your order and agree the shipping with you. You are not committed to anything without your consent.