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BMW

Genuine BMW Turbocharger Coolant Return Pipe (Bank 2, Cyl 4-6) - N54 - 11537558903 Fits E82 E88 E90 E91 E92 E93 E60 E61 E89 135i 335i 335xi 535i 535xi Z4 35i/35is

Genuine BMW Turbocharger Coolant Return Pipe (Bank 2, Cyl 4-6) - N54 - 11537558903 Fits E82 E88 E90 E91 E92 E93 E60 E61 E89 135i 335i 335xi 535i 535xi Z4 35i/35is

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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 Bank 2 Turbo Water Return Line for Cylinders 4 to 6

Restore dependable cooling on your N54 twin turbo with this factory original turbo water return hardline for the rear turbocharger bank. This OE cooling return tube routes coolant back from the turbo on cylinders 4 to 6, helping prevent heat soak, coolant loss and premature turbo wear during fast road use and track days.

Part number: 11537558903. Genuine BMW component for a precise fit and a leak free seal when installed with fresh sealing rings. Ideal when chasing a weep from the turbo cooling circuit, addressing overheating under load or refreshing ageing pipework on performance tuned cars.

Why enthusiasts choose this OE water return pipe

  • Authentic BMW part for exact alignment on N54 bank two
  • Durable metal hardline resists heat, pressure and vibration
  • Helps cure coolant seepage and protects turbo bearings
  • Direct swap for tired or corroded pipes on high mileage cars
  • Proven at MJ Modifications and by our customers for reliability

Compatible engines and chassis

Designed for BMW models fitted with the N54 straight six twin turbo engine. Covers the rear turbo cooling return on cylinders 4 to 6. Suits:

  • 1 Series
    • E82 135i and 1 Series M Coupé
    • E88 135i Convertible
  • 3 Series
    • E90 335i and xDrive
    • E91 335i Touring and xDrive
    • E92 335i Coupé and xDrive
    • E93 335i Convertible
  • 5 Series
    • E60 LCI 535i and xDrive
    • E61 LCI 535i Touring xDrive
  • Z Series
    • E89 Z4 sDrive35i and sDrive35is

Chassis codes covered include E82, E88, E90, E91, E92, E93, E60, E61 and E89.

Part details

  • Manufacturer: BMW
  • BMW reference: 11537558903
  • Location: bank two water return, cylinders 4 to 6
  • Function: turbo cooling circuit return hardline

Installation

Professional fitting recommended. We offer in house installation at MJ Modifications, Warwickshire. Request a quote at info@mjmodifications.co.uk. Replace any associated O rings or sealing washers during installation for best results.

Fitment check before dispatch

We will confirm compatibility prior to shipping. Add your UK registration or the last 7 characters of your VIN at checkout to ensure you receive the correct N54 bank two turbo water return pipe.

Warranty

Two years manufacturer warranty for UK customers and one year for international customers when a VIN is supplied at checkout on compatible vehicles.

Search friendly terms customers use

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