2002-2006 Audi A4 Thermostat Housing Tube / Coolant Hose 06B121057A

OEM Part #: 06B-121-057-A (06B121057A)

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Used OEM parts are one-of-a-kind. We sometimes get another when we dismantle a matching vehicle, but we can’t say when — browse what’s in stock now:

Other Thermostat Housing that may fit your vehicle

Coolant Thermostat w/ Housing 06D121111G

Coolant Thermostat w/ Housing

$14.99
Fits 2005–2009 Audi A4
OEM: 06D121111G
Used Only 1 left
Thermostat Housing 06B121111K

Thermostat Housing

$11.99
Fits 2002–2006 Audi A4
OEM: 06B121111K
Used Only 1 left
Thermostat Housing 06E121111G

Thermostat Housing

Starting at $13.71
Fits 2005–2011 Audi A4 / A6
OEM: 06E121111G
Used
  • Genuine OEM — real photos
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Ensure your Audi A4 or A4 Quattro operates at peak efficiency with the OEM Thermostat Housing Tube / Coolant Hose, part number 06B121057A. This essential component links the thermostat housing to the coolant pipe, facilitating optimal engine temperature control. Compatible with 2002-2006 Audi A4 and A4 Quattro models featuring the 1.8L L4 gas engine, it helps prevent overheating and coolant leaks caused by wear or damage. By replacing worn or malfunctioning hoses, you maintain proper coolant flow and enhance engine performance. Trust in this genuine factory-original part for your vehicle's needs and avoid the pitfalls of non-functioning hoses.

Links the thermostat housing to the hard coolant pipe.

Specifications

Specifications for Thermostat Housing Tube / Coolant Hose 06B121057A
Fits Vehicle ModelA4
Fits Vehicle MakeAudi
OEM Part No06B-121-057-A (06B121057A)
CategoryRadiator / Coolant

Compatible Vehicles

Fits 16 vehicle configurations across 1 make, 2002-2006.

Check your specific vehicle before ordering. This list shows year, make, and model. Some years have multiple trims or engines that use different parts, and individual listings may have additional fitment notes (e.g. “with sunroof only”). Review the full variant list below, or message us with your VIN and we’ll confirm the match.

Audi

  • A4 2002-2006 · 16 variants
View all 16 vehicle configurations
Full vehicle fitment list for Thermostat Housing Tube / Coolant Hose 06B121057A
Year Make Model Trim Engine Note
2002 Audi A4 Sedan 1.8L l4 Turbo
2002 Audi A4 Quattro Wagon 1.8L l4 Turbo
2002 Audi A4 Quattro Sedan 1.8L l4 Turbo
2003 Audi A4 Sedan 1.8L l4 Turbo
2003 Audi A4 Convertible 1.8L l4 Turbo
2003 Audi A4 Quattro Wagon 1.8L l4 Turbo
2003 Audi A4 Quattro Sedan 1.8L l4 Turbo
2004 Audi A4 Sedan 1.8L l4 Turbo
2004 Audi A4 Convertible 1.8L l4 Turbo
2004 Audi A4 Quattro Wagon 1.8L l4 Turbo
2004 Audi A4 Quattro Sedan 1.8L l4 Turbo
2005 Audi A4 Sedan 1.8L l4 Turbo
2005 Audi A4 Convertible 1.8L l4 Turbo
2005 Audi A4 Quattro Wagon 1.8L l4 Turbo
2005 Audi A4 Quattro Sedan 1.8L l4 Turbo
2006 Audi A4 Convertible 1.8L l4 Turbo

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Asking about: Thermostat Housing Tube / Coolant Hose 06B121057A · OEM #06B121057A