Coolant Outlet Water Pipe Connector suitable with BMW F30/ F35 /G12 & F49 - 11118511205

Water Pipe Connector / Coolant Outlet Pipe (Engine Block to Upper Radiator Hose) – BMW

OEM / Part Number: 11118511205 (BMW format: 11 11 8 511 205)

The BMW 11118511205 is a coolant outlet pipe / water pipe connector that mounts at the engine block and connects coolant flow toward the upper radiator hose. It’s a critical cooling-system junction piece designed to maintain proper coolant routing and sealing under heat and pressure.

What it does (Function)

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  Routes coolant from the engine block outlet to the upper radiator hose circuit

  
  
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  Maintains coolant flow integrity and helps prevent leaks at a high-stress connection point

  
  
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  Ensures stable operating temperature by preventing coolant loss/air ingress

  
  

Key features & benefits

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  Direct replacement for BMW OEM specification (correct geometry and connection points)

  
  
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  Commonly supplied as the plastic coolant outlet pipe assembly for the application (OEM design)

  
  
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  Many listings note a new gasket/seal included for proper reseal during replacement (confirm per supplier/brand)

  
  
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  Helps restore cooling-system reliability where older connectors become brittle/age-affected

  
  

Symptoms of a failing connector (When to replace)

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  Visible coolant seepage/leak around the outlet/connector area

  
  
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  Coolant smell, low coolant warnings, or frequent top-ups

  
  
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  Overheating or temperature fluctuations (especially under load)

  
  
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  Cracking/brittleness at the connector or flange (common on aging plastic cooling parts)

  
  

Vehicle fitment (Applications)

This part is widely cataloged for BMW models using B46/B48-family configurations in multiple chassis. Examples commonly listed include:

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  BMW F30 / F31 / F34 (3 Series variants)

  
  
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  BMW F32 / F33 / F36 (4 Series variants)

  
  
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  BMW G12 (7 Series variants shown in aftermarket fitment lists)

  
  
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  BMW F48 / F39 / G30 / G01 / G02 are also frequently referenced for the same part number in catalogs

  
  

About your requested chassis list (F30 / F35 / G12 / F49):

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  F30 and G12 are commonly associated with 11118511205 in multiple catalogs.

  
  
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  F35 and F49 can be market/engine dependent. The safest professional practice is to confirm by VIN / engine code (B46/B48) before sale to avoid mismatch.

  
  

Specifications (Professional listing data)

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  Part name (common): Coolant Outlet Pipe / Water Pipe Connector / Engine Block Connector Pipe

  
  
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  OEM number: 11118511205 / 11 11 8 511 205

  
  
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  System: Engine Cooling System

  
  
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  Placement: Engine block coolant outlet → upper radiator hose circuit

  
  
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  Brand options:

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    Genuine BMW (OEM)

    
    
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    Aftermarket equivalents (some suppliers offer upgraded aluminum versions to address plastic brittleness)