Home » MDP - Cast Aluminum Thermostat Housing - Mk1 1.8T

MDP - Cast Aluminum Thermostat Housing - Mk1 1.8T

  • Vendor MDP
  • Part # 06A121121C
$17.99
$19.99 Sale $17.99
In stock
Usually ships within 1 business day

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Description Fitment Guide

Heavy duty cast aluminum replacement for the factory plastic thermostat housing. The plastic factory part is prone to cracking and leaking. Replaces part number 06A121121C 

Includes new Thermostat O-Ring.

Let customers speak for us

from 5 reviews
Very nice!

Love my new side markers - very clean looking and unique in how they flash when turning left or right. The only suggestion I’d make is provide instructions for both installing them and for being very careful with the wire once you disconnect the old light housing Left side went in ok, but I lost the right side into the fender black hole which required me to remove the tire and unscrew most of the lining so I could find the wire!

Jon W.
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I like them!

This product is fantastic! The smoked side markers look incredible, and the sequential leds are a huge upgrade. Installation was a breeze truly plug-and-play and I had them on in minutes without any hassle. They really modernize the car's look. Highly recommend!

Dan C.
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Perfect Upgrade for My TT Mk1

Totally transformed my 2005 TT Mk1! This German Auto Stuff carbon spoiler looks incredible and was a perfect fit. The quality is outstanding. Installation was quick and easy. My car looks sharp! Highly recommend for any Mk1 owner looking for a premium upgrade!

Dan C.
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TT parts

Part worked perfectly and arrived on time. I spoke with them before ordering and they took the time to ensure I was receiving the correct part. I will definitely use them again for parts
John M

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