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BMW

Genuine BMW N54 Turbocharger Coolant Supply Pipe ZYL. 4-6 | OEM 11537558901 | Fits E82/E88 135i, E90/E91/E92/E93 335i/335ix/335is, E60/E61 535i/535ix, F01/F02 740i, E89 Z4 35i/35is, E71 X6 35i

Genuine BMW N54 Turbocharger Coolant Supply Pipe ZYL. 4-6 | OEM 11537558901 | Fits E82/E88 135i, E90/E91/E92/E93 335i/335ix/335is, E60/E61 535i/535ix, F01/F02 740i, E89 Z4 35i/35is, E71 X6 35i

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Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.

BMW N54 Turbo Water Feed Hardline ZYL. 4 to 6 – Part No. 11537558901

Restore dependable cooling to your twin‑turbo N54 with this factory water supply tube for the rear bank, cylinders 4 to 6. Part number 11537558901 is the correct original equipment metal line that routes coolant to the turbo on bank 2, ensuring stable temperatures, leak‑free joints and long‑term reliability on fast road and daily‑driven cars alike.

If you are chasing a coolant drip, refreshing an ageing cooling system or completing a turbo swap on an N54, this OE feed tube is the clean, correct solution. We fit these in our own builds and customer cars and the results speak for themselves – precise fit, no drama, consistent cooling performance.

  • Exact OE routing and geometry for proper coolant flow to the rear turbo
  • Direct replacement for tired, corroded or damaged water feed pipes
  • Prevents weeps at the unions and helps safeguard against overheating
  • Ideal during turbo replacement, water pump or thermostat service
  • Trusted in our workshop and praised by customers for fit and longevity

Part Number

BMW 11537558901

Fits the following N54 models

Designed for the 3.0 twin‑turbo N54 engine on the applications below. If you are unsure, we can confirm compatibility from your registration or last 7 of the VIN before dispatch.

1 Series

  • E82 135i
  • E88 135i

3 Series

  • E90 335i and 335ix
  • E91 335i and 335ix
  • E92 335i, 335ix and 335is
  • E93 335i and 335is

5 Series

  • E60 535i and 535ix
  • E61 535ix

7 Series

  • F01 740i
  • F02 740iL

X Series

  • E71 X6 35i

Z Series

  • E89 Z4 35i and 35is

Why choose the OE hardline

Using the proper BMW hardline means the sealing faces, bends and mounting points are exactly as intended. That gives you the right coolant delivery to the turbocharger on bank 2, a tidy install and the durability you expect from an original part.

Fitting and support

For professional installation, speak to MJ Modifications in Warwickshire. We can supply and fit this part with care and provide advice on associated seals and coolant. Request a fitting quote via info@mjmodifications.co.uk.

Check before you buy

We offer a quick compatibility check. Send us your UK registration or the last 7 digits of your VIN and we will verify fitment for your specific chassis and engine.

Common search terms

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