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Description
Expansion Tank for VW Amarok 2.0 TSI, TDI, BiTDI & 3.0 TDI (2010–2022) – ET39Vehicle Fitment & Part Details This Partquip ET39 expansion tank is a direct fit replacement for the Volkswagen Amarok (20102022), covering the full 2. 0 TSI, 2. 0 TDI, 2. 0 BiTDI, and 3. 0 TDI engine range across 4X2 and 4X4 drivetrains. The expansion tank stores excess coolant as it expands under heat, releasing it back into the cooling circuit once the engine cools. Confirm compatibility by matching the listed fitment details, any OEM reference
Vehicle Fitment & Part Details
This Partquip ET39 expansion tank is a direct-fit replacement for the Volkswagen Amarok (2010–2022), covering the full 2.0 TSI, 2.0 TDI, 2.0 BiTDI, and 3.0 TDI engine range across 4X2 and 4X4 drivetrains. The expansion tank stores excess coolant as it expands under heat, releasing it back into the cooling circuit once the engine cools. Confirm compatibility by matching the listed fitment details, any OEM reference numbers supplied, and VIN/engine/chassis information where variants exist.
Key Details
- SKU
- ET39
- Component
- Expansion Tank
- Brand
- Partquip
- OEM References
-
- VW: 2H0121407, 2H0121407C, 2H0121407D
- Primary Fitment
- VW Amarok 2.0 BiTDI (01-22)
Key Benefits
- Direct OE replacement (2H0121407 / 2H0121407C / 2H0121407D) ensures correct fit across all Amarok 2.0 and 3.0 variants.
- Durable plastic construction engineered to withstand repeated thermal cycling in the cooling circuit.
Vehicle Fitment
| Variant | Drivetrain | Engine | Years |
|---|---|---|---|
| 2.0 TSI | 4X2 | CFPA | 2011–2016 |
| 2.0 TDI | 4X2 | CDBA / CNFA / CNFB | 2010–2022 |
| 2.0 TDI | 4X4 | CDBA / CNFA / CNFB | 2010–2022 |
| 2.0 BiTDI | 4X2 | CDCA / CNEA | 2010– |
| 2.0 BiTDI | 4X4 | CDCA / CNEA / CSHA | 2010–2022 |
| 3.0 TDI | – | – | 2017–2021 |
Specifications
- Material: Plastic
- SKU: ET39
OE Reference Numbers
- VW: 2H0121407, 2H0121407C, 2H0121407D
Frequently Asked Questions
Which OE part numbers does the ET39 replace?
This expansion tank replaces VW OE numbers 2H0121407, 2H0121407C, and 2H0121407D, ensuring a direct fit on all compatible Amarok models.
Does the ET39 fit both 4X2 and 4X4 Amarok models?
Yes. The ET39 covers both 4X2 and 4X4 drivetrains across the 2.0 TSI, 2.0 TDI, 2.0 BiTDI, and 3.0 TDI engine range. Check the fitment table above for your specific variant.
Installation Tips
- Allow the engine to cool completely before opening the cooling system to avoid scalding.
- Drain coolant below the tank level before removing the old expansion tank.
- Inspect all connected hoses and clamps for cracks or wear — replace any suspect components while access is clear.
- Refill with the manufacturer-specified coolant type and bleed the system of air pockets to prevent overheating.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 190 reviews
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Product Reviews
★★★★★ 5
Better Design - Better Materials - No Sticking
Style: 2.5" Ball
Been using Chuck-It launchers and plastic balls for a very long time and they were always a little sticky on giving up the ball. This makes it tricky to throw grounders with precision and can overshoot the fence in the backyard. A couple of years ago, Chuck-It changed the material to a stiffer plastic that made this problem more pronounced. I even tried custom sanding the cup to get just the right grip.
The Fetch-It launcher (using the Chuck-It plastic balls) uses a three-pronged claw with soft rubbery ends that releases perfect every time. The material costs on this new one are noticeably higher while maintaining a somewhat lower price than the brand name original.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 9, 2026
★★★★★ 3
Meh
Style: 2.5" Ball
It "works" but it isn't very good. The grip is so loose on the ball, it lets go early and doesn't thrown very far. A Chuckit is so much better, I can get 3x the distance with a 25" Chuckit. This thing is kind of a waste.
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Reviewed in the United States on May 25, 2026
★★★★★ 5
Good size, Durable, Easy to use
My dog doesn't really play with balls that much. But she does love a laser which I was hoping the light in this ball might mimic for her. And it does. She loves this ball. And the winter months when the days are short finding games we can play at the park is critical for her well-being.
The ball came in an attractive packaging with a charger and charged quickly. It's a simple push of the button on the light to activate it. It will turn off on its own but light back up when it's moved, which is handy.
The light has a soft glow to it which is pleasant to be around. The ball is easy to see at night and has a good bounce to it as well. My dog chewed on it for quite a bit and it's held up really well, so I will say it's pretty durable and chewable.
The weight in the ball is nice and it's an easy throw. My only suggestion is to make sure that you have the light piece locked in place first. I have thrown it where the ball and the light went in two different directions. And that was my fault. Lol
We have had some great fun with this ball at the park. For the short winter days it's a perfect addition to your pet's play routine. We love it.
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Reviewed in the United States on December 28, 2025
★★★★★ 1
Defective on arrival
Second ball defective.
First ball received would not light.
Second ball battery charged and locked. When unlocked to switch on light, the cylinder stuck in the ball and will not come out.
I'm very disappointed. I've sent back and hope the third functions properly.
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Reviewed in the United States on December 30, 2025
★★★★★ 5
Our Dog Is OBSESSED – Night Play Game Changer!
This light-up dog ball is a total hit in our house. As you can see from the photos, the glow is bright and easy to spot even in complete darkness, which makes nighttime play so much safer and more fun. The motion-activated light turns on instantly when my dog nudges or bites it, and the 90-second auto glow is perfect.
The silicone material feels soft but durable, gentle on teeth, and my dog loves carrying it around. USB-C charging is super convenient, and one charge easily lasts multiple evening play sessions. It’s also water-resistant, so no worries about grass or dew.
Perfect size for small to medium dogs, and it keeps my pup engaged and active after sunset. Highly recommend for anyone who wants fun, visible, and stress-free night play with their dog!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 8, 2026
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