BMW
Genuine BMW N55 Turbo Water Feed/Coolant Supply
Genuine BMW N55 Turbo Water Feed/Coolant Supply
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BMW N55 Turbocharger Water Feed Tube - Part Number 11538602578
Protect your turbo and keep temperatures under control with this original BMW cooling line to the turbocharger for N55-powered models. Designed for precise fitment and long-term reliability, this factory part restores correct coolant circulation to the turbo, helping prevent hot spots, leaks and premature component wear on M2, M135i, M235i, 335i and 435i models, including xDrive and LCI variants.
Why this original BMW cooling pipe is the right choice
- Direct-fit BMW part that matches the original routing and connections on N55 engines
- Ideal replacement when the existing turbo water line is weeping, kinked or restricted
- Helps maintain stable turbocharger temperatures for dependable performance
- Restores confidence after coolant smell, residue or unexplained coolant loss
- Part number 11538602578 for easy identification and parts matching
When to replace the turbocharger cooling tube
- Coolant odour near the turbo area or visible staining around the line
- Top-ups needed more often or low coolant warnings on the dash
- Overheating messages under load or after spirited driving
- Line found to be brittle, crushed, pinched or clogged during inspection
Vehicle applications
For BMW vehicles equipped with the N55 engine. Includes xDrive and LCI where applicable.
- 1 Series F20 F21: M135i and M135ix
- 2 Series F22 F23: M235i and M235ix
- M2 F87 with N55
- 3 Series F30 F31: 335i and 335ix
- 4 Series F32 F33 F36: 435i and 435ix
Part details
- Manufacturer: BMW
- BMW part number: 11538602578
- Description: turbocharger cooling line for N55 engines
Warranty
Two years manufacturer warranty for UK customers and one year manufacturer warranty for international customers if VIN is provided during check out on compatible vehicles.
Fitting and support
Professional installation is recommended. MJ Modifications can supply and fit this item at our Warwickshire workshop. Request a fitting quote at info@mjmodifications.co.uk.
Compatibility check
We will verify fitment prior to dispatch. Enter your UK registration or the last 7 characters of your VIN at checkout and we will confirm this BMW N55 turbo coolant pipe is correct for your car.
What our customers say
We have installed this original BMW line on numerous N55 builds. Fitment is spot on, coolant leaks are cured and customers report restored confidence under hard driving and track use.
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