Our 10 Best Mk4 Gti Thermostats - Top Product Reviwed
To find the mk4 gti thermostats, we assembled a list of products, taking a close look at the factors that would make each great for a camping trip or other outdoor adventure, including each product’s overall size, weight, and durability. We compared the products to each other to find out which one was best.

It is important to know all about it to make an informed decision when buying a mk4 gti thermostats. This guide will help you understand how to choose a mk4 gti thermostats that will meet your needs.

10 mk4 gti thermostats: Editor Recommended

10 mk4 gti thermostats Review:

1. Aluminum Coolant Flange Upgrade Kit with Cooling Hose Flange Coolant T-Fitting Thermostat Housing Cover Water Distribution Pipe Fits VW Golf Jetta GLI GTI Mk4 TT 337 1.8T Replace 06A121121C

Features :

  • Material: Upgrade Aluminum as pic shows.
  • This is a complete kit of all the parts that commonly fail causing coolant leaks on 1.8T engines.
  • Replacement Manufacturer Part Number: 06A121121C 06A121121F 1J0121087C 1J0121087E 06A121132AP 06A121132AH
  • Fits The Following Vehicles: Fits 2000-2005 VW Golf Mk4 1.8T, 2000-2005 VW Jetta Mk4 1.8T, for 2000-2002 Audi TT.
  • Package Included: 1xCooling Hose Flange, Mk4 1.8T; 1xCoolant T-Fitting, Mk4 1.8T; 1xThermostat Housing Cover, Mk4 1.8T / 2.0L; 1xWater Distribution Pipe, Mk4 1.8T / 2.0L; 1 x Gasket

Additional Info :

Color Silver

2. Partol Aluminum Coolant Flange Upgrade Kit Fits VW MK4 Golf Jetta GLI GTI TT 337 1.8T (Cooling Hose Flange+Coolant T-Fitting+Thermostat Housing Cover + Water Distribution Pipe)

Features :

  • Fitment: 2000-2005 Mk4 Golf/Jetta 1.8T, 2000-2002 Audi TT. Does not fit ANY New Beetles
  • Note: Fitment for the 2000+ 1.8T Automatic Transmission will require removal of the adapter plate on the head of the engine where the flange with the coolant temperature sensor sits
  • Replacement Manufacturer Part Number: 06A121121C 06A121121F 1J0121087C 1J0121087E 06A121132AP 06A121132AH
  • Material: Upgrade Aluminum as pic shows
  • Package Included: 1xCooling Hose Flange, Mk4 1.8T; 1xCoolant T-Fitting, Mk4 1.8T; 1xThermostat Housing Cover, Mk4 1.8T / 2.0L; 1xWater Distribution Pipe, Mk4 1.8T / 2.0L; 1 x Gasket

Additional Info :

Color Silver

3. GSKMOTOR Coolant Flange Upgrade Kit Replacement Fit for VW MK4 Golf Jetta GLI GTI TT 337 1.8T (Cooling Hose Flange+Coolant T-Fitting+Thermostat Housing Cover + Water Distribution Pipe)

Features :

  • 【Compatibility】Coolant Flange Upgrade Kit Fit For 2000-2005 MK4 Golf/Jetta 1.8T, 2000-2002 Audi TT
  • 【How to use】Coolant Flange Upgrade Kit Fitment for the 2000+ 1.8T Automatic Transmission will require removal of the adapter plate on the head of the engine where the flange with the coolant temperature sensor sits.
  • 【NOTICE】Does not fit ANY New Beetles
  • 【100% satisfied】we are experts in the field of auto parts, if you have any questions, please contact us in time,we will serve you online 24 hours to ensure your satisfaction.
  • 【About us】We are automotive enthusiasts and want to ensure you’re getting the most for your money. As automotive technology continues to advance, our commitment to developing the newest performance products is stronger than ever. For whatever you drive now and in the future, We will have the most advanced performance products available.

Additional Info :

4. Mishimoto MMTS-GTI-99 Racing Low Temp Thermostat Compatible With Volkswagen Golf GTI 1.8T 1999-2005

Features :

  • Direct fit for the 1997-2001 Audi A4 1.8T
  • Direct fit for the 2000-2006 Audi TT 1.8T/3.2L
  • Lower activation temperature allows coolant to flow through the engine earlier, maintaining lower temperatures (Mishimoto thermostat activates at 180F vs. stock 188.6F)
  • Mishimoto Lifetime Warranty
  • Order now and receive FREE SHIPPING!

Additional Info :

Color MMTS-GTI-99
Item Dimensions
Height 3
Width 3
Length 3
Weight 0.1984160358
Release Date 2016-08-27T00:00:01Z

5. Google Nest Thermostat – Smart Thermostat for Home – Programmable Wifi Thermostat – Snow

Features :

  • ENERGY STAR certified smart thermostat for home that helps you save energy and stay comfortable.Product note: You can also check your system’s compatibility before purchasing a Nest thermostat with our online Nest Compatibility Checker on the Google Nest support page
  • The Nest Thermostat is designed to work without a C wire in most homes, but for some systems, including heating only, cooling only, zone controlled, and heat pump systems, you’ll need a C wire or other compatible power accessory. Lock feature: No
  • Nest Thermostat turns itself down when you leave, so you don’t waste energy heating or cooling an empty home; easily program an energy efficient schedule in the Google home app on your Android or iPhone
  • Remote control lets family members change the thermostat temperature from anywhere on a phone, laptop, or tablet[1]
  • Savings Finder looks for more ways your thermostat can help you save, and suggests tweaks to your schedule in the app; check with your energy provider to learn more about rebates and more ways to save on a Nest thermostat
  • Smart thermostat with HVAC monitoring, which looks out for your heating and cooling systems; sends an alert if something doesn’t seem right, along with helpful reminders to make maintenance easier[2]
  • It’s easy to install your thermostat, typically in 30 minutes or less, with everything you need included in the box; it’s compatible with 85% of heating and cooling systems
  • Control the temperature with your voice using smart home devices that work with Google Assistant or Alexa[3]
  • Nest Renew makes it simple to support clean energy right from home; it works with your Nest Thermostat[5] to help you automatically prioritize your usage[6] to times when energy is cleaner or less expensive
  • Please refer to the product description section below for all applicable legal disclaimers denoted by the bracketed numbers in the preceding bullet points (e.g., [1], [2], etc.)

Additional Info :

Color Snow
Item Dimensions
Height 1.0728346
Width 3.30709
Length 3.30709
Weight 0.61875
Release Date 2020-10-30T00:00:01Z

6. Ecobee3 Lite SmartThermostat, Black

Features :

  • Save up to 23% annually on heating and cooling costs (compared to a hold of 72°F)
  • Control from anywhere using your Android or iOS device
  • Add SmartSensor to manage hot or cold spots and deliver enhanced comfort to the rooms that matter most
  • Automatically pauses your heating or cooling when a door or window is left open (requires ecobee SmartSensor for doors and windows and a Smart Security subscription)
  • PLAYS WELL WITH OTHERS: ecobee3 lite works with your favorite smart home setups, including Apple HomeKit, Amazon Alexa, Google Assistant, Microsoft Cortana, Samsung SmartThings, Wink, and IFTTT
  • WORKS WITH ROOM SENSORS: Place them in the rooms that matter the most and have the temperature balanced throughout your whole home. Measuring both occupancy and temperature, sensors signal your ecobee Smart Thermostat to automatically switch to the right mode for comfort when you’re home or for savings when you’re not. 2-pack sold separately.
  • EASILY INSTALL YOURSELF: It only takes about 30 minutes, thanks to an easy to follow installation guide and an in-app step-by-step walkthrough. Everything you need comes in the box, including a Power Extender Kit for homes with no common wire (C-wire)

Additional Info :

Color Black
Item Dimensions
Height 4.05
Width 1
Length 4.05
Weight 1

7. NewYall Cast Aluminum Thermostat Housing Cover Coolant Flange Cooling Hose Water Distribution Pipe Upgrade Kit

Features :

  • Fits: 2000-2005 MK4 Golf/Jetta 1.8T, 2000-2002 Audi TT

Additional Info :

Color Black

8. Emerson Sensi Wi-Fi Smart Thermostat for Smart Home, DIY, Works With Alexa, Energy Star Certified, ST55

Features :

  • PRIVACY PROTECTION*: Sensi won’t sell your personal information to third parties
  • SAVE ABOUT 23% ON HVAC ENERGY*: The ENERGY STAR-certified Sensi smart thermostat can help you save energy with features like flexible scheduling, remote access, and usage reports
  • EASY DIY INSTALLATION: Use the built-in level and step-by-step app instructions for a quick installation. Works with HVAC equipment found in most homes. Common wire (c-wire) is not required in most applications
  • SMART MAINTENANCE: Sensi can help monitor the performance and efficiency of your HVAC system by delivering valuable usage reports, alerts about your equipment, and maintenance reminders like filter replacement
  • SIMPLE CONFIGURATION: Looks and feels like a thermostat. Has buttons and fits the same space as a traditional thermostat so you don’t have to patch and paint your walls

Additional Info :

Color White
Item Dimensions
Height 1
Width 5.88
Length 3.75
Weight 0.85
Release Date 2017-05-22T00:00:01Z

9. labwork Cast Aluminum Coolant Flange Upgrade Kit Fit for 2000-2005 VW Golf Mk4 / Jetta Mk4 1.8T 2000-2002 Audi TT 1J0121087E 06A121121C 06A121133J

Features :

  • Fit For 2000-2005 VW Golf Mk4 1.8T
  • Fit For 2000-2005 VW Jetta Mk4 1.8T
  • Fit For 2000-2002 Audi TT
  • *Fitment for the 2000+ 1.8T Automatic Transmission will require removal of the adapter plate on the head of the engine where the flange with the coolant temperature sensor sits.
  • *Does not fit ANY New Beetles

10. Amazon Smart Thermostat – ENERGY STAR certified, DIY install, Works with Alexa – C-wire required

Features :

  • Smart upgrade – Amazon Smart Thermostat is an easy way to switch from a traditional thermostat and help reduce energy usage.
  • Save money – After purchase, Amazon will send you an email with details about rebates that may be available from energy providers in your area. Explore rebates above.
  • Save energy – According to EPA estimates, ENERGY STAR certified thermostats save an average of $50 on yearly energy bills.
  • Automatic comfort – Alexa can do the programming for you, updating the temperature to keep you comfortable.
  • On-the-go control – Let Alexa set the temperature, or set it yourself from anywhere with the Alexa app.
  • You can do it – The Alexa app will guide you through the installation process, but customer service is always available.
  • Reliable – Made with Honeywell Home Thermostat Technology and backed by 130 years of experience.

Additional Info :

Color WHITE
Item Dimensions
Height 0.84
Width 3.56
Length 3.56
Weight 0.24125
Release Date 2021-11-04T00:00:01Z

How To Choose Your mk4 gti thermostats

If you want to purchase products like the mk4 gti thermostats, you need to follow a buying guide. Some features need to tick your product before buying. Let’s take a look at them:

  • Price: Online purchase has been renowned for offering items at the best possible prices. As such places have networks with many dealers and manufacturers, sellers offer the best deals. Moreover, there are no intermediaries, which lessens the additional costs.
  • Reliability: As online stores portray customer reviews,  purchasing them boosts reliability. If faced with any defect, there is a scope for you to change. Some stores have excellent customer service, pushing you to buy from there.
  • Convenience: Who does not love convenience? Having everything as per your wish is something to die for. Buying a product from an online store is such. You do not have to worry about the time, the place, or the crowd. Everything happens when you want it and how you want it.
  • Functionality: Check out your mk4 gti thermostats functionality when you buy it. An easy way to do that would be to check the specs. Remember, the more vast the specs, the greater your product’s functionality.

What to look for when buying the mk4 gti thermostats?

The products in the market are manifold. The variety of products is so high that it may be confusing to choose the right one for you. This is why we have created this guide for you to help you pick the right mk4 gti thermostats easily.

1. The authenticity of the Online Shop Website 

I did mention earlier that shopping online is very convenient yet it’s tough to know whether the shop is genuine. Everyone can seem to create an online shop with a couple of photos and prices just to be seen as legitimate. To know whether it’s genuine, make sure to look for the following:

  • Contact Details — make sure to contact them first before buying to ensure that there would be someone to attend to you and you can understand further about their service.
  • Website Layout – browse and feel if the site looks professional. How’s the quality of the images and more, that you can potentially find from the content of the website itself.
  • Website Encryption — when buying from a secure website, you’ll always see the following in the address bar:

The padlock icon in the URL bar and the “s” in the “https://” means that your communication within the website and your computer are secured and encrypted online transactions.

2. Product Details 

There are many important factors that you always have to look at. Especially if it’s something, you’re going to wear or even consume. It can be material type, ingredients, benefits, sizes, etc. The more product details, the better.

3. Compare Prices of Similar Products 

If you’re not a frequent online shopper, you might find few items with good deals. But don’t let these deals trap you, do make sure to compare prices first of the similar products to other online shops. With so many online shops offering the same items, you’ll be shocked that some of them sell at a higher price than they are supposed to. There are so many websites out there that can help you check and compare prices.

4. Returns, Cancellations, and Refunds Policies 

It is a very important part to know when buying items online. It’s good to know how the company handles returns or cancellations of items and whether there would be any refunds in any case. Purchasing online will always be risky because we usually cannot verify the quality of the items. Therefore, having the knowledge if there would be a refund will be a great point to consider if the items won’t be the same as expected.

5. Shipping 

While online shopping has made it easier for us to purchase anything we want worldwide, sometimes it can also be tricky. Say the shipping, if we bought it locally – usually will only take a few days but if we bought it from the international shop – then likely we have to wait for more than weeks, which I believe we don’t have an issue with that especially if we’re informed for the estimated delivery date. But it’s a matter of what if they ship it to the wrong address or there would be a longer wait than expected. Another thing that we’re also particular with especially buying international items would be the shipping fee – most of us don’t mind buying more to get free shipping. And there are just some of the online shops’ techniques to encourage customers to buy more and think that we’re saving money for the shipping fee. Lastly not to forget to have the tracking number of monitoring the progress of the delivery of your item.

6. Secured Payment Method 

this is the most crucial part when purchasing online; sharing your credit/debit card details. Options to pay via credit card, debit card, and Paypal or other Third-Party payments are considered secure. Also, try not to make any online purchase when using public wi-fi or mobile apps connected to a public hotspot – it can be potentially easy for hackers to steal your information.

7. Be alert for Scams and Fraud 

This never-ending story through calls, emails, and even contacting us through social media for these people to try to steal our information. Be wary and do necessary actions if you think you’ve encountered these tactics. Don’t open any suspicious links, don’t easily provide your particulars over the phone, make sure to ask a couple of questions to verify whether the call is not a fraud/scam. Check the person’s identity through other social media accounts if he/she exists. If you experience scamming, make sure to call your bank and police if needed. And do check your bank statement often, especially if you frequently buy online.

8. Customer Reviews 

Finally, to check the reviews. How can we know that the reviews are not fake ones? Thanks to social media, these online shops nowadays have their social media accounts. That’s the best place to try to contact them and view more real/organic customer reviews. This is also perfect for reaching out to those who tagged the shop and understanding their experience. On that, you’ll have a more secure feeling before buying items online.

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