2012-2015 Volkswagen Passat Thermostat Housing 03L121111Q

OEM Part #: 03L-121-111-Q (03L121111Q)

This page covers one exact OEM part number. Every unit we stocked has sold.

We may be able to get another

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

Thermostat Housing 03H121117B

Thermostat Housing

$99.99
Fits 2010–2023 Porsche & Volkswagen
OEM: 03H121117B Porsche: 95810606000
Used
Thermostat Housing / Cover 07K121121B

Thermostat Housing / Cover

$29.99
Fits 2005–2014 Volkswagen
OEM: 07K121121B
Used Only 1 left
Thermostat Housing Cover 03H121121D

Thermostat Housing Cover

$34.99
Fits 2010–2023 Porsche & Volkswagen
OEM: 03H121121D Porsche: 95810613100
Used
  • Genuine OEM — real photos
  • 30-day returns on eligible parts
  • eBay Top Rated · 100,000+ positive ratings
  • Ships from our own indoor warehouse

Replace your aging or malfunctioning thermostat housing with this genuine OEM part, part number 03L121111Q, sourced directly from a donor Volkswagen Passat. This factory-original thermostat housing is designed to maintain proper engine cooling by housing the thermostat securely. Common issues this part addresses include coolant leaks and overheating due to a worn or damaged housing. Compatible with 2012-2014 Volkswagen Passat models featuring the 2.0L L4 TDI Diesel engine, this component is also known as the thermostat unit. Ideal for restoring reliable engine performance, it ensures optimal cooling system function. Other compatible part numbers include 06B121119B and 03L121011P. Ensure your engine runs smoothly with this trusted replacement.

Specifications

Specifications for Thermostat Housing 03L121111Q
Fits Vehicle ModelPassat
Fits Vehicle MakeVolkswagen
OEM Part No03L-121-111-Q (03L121111Q)
CategoryRadiator / Coolant

Compatible Vehicles

Fits 4 vehicle configurations across 1 make, 2012-2015.

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.

Volkswagen

  • Passat 2012-2015 · 4 variants 4 with notes
View all 4 vehicle configurations — 4 with fitment notes
Full vehicle fitment list for Thermostat Housing 03L121111Q
Year Make Model Trim Engine Note
2012 Volkswagen Passat Sedan 2.0L l4 Diesel Turbo For Vehicles with Engine Code(s) CKRA
2013 Volkswagen Passat Sedan 2.0L l4 Diesel Turbo For Vehicles with Engine Code(s) CKRA
2014 Volkswagen Passat Sedan 2.0L l4 Diesel Turbo For Vehicles with Engine Code(s) CKRA
2015 Volkswagen Passat Sedan 2.0L l4 Diesel Turbo For Vehicles with Engine Code(s) CKRA

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