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Description
Expansion Tank for Audi A1 Sportback, VW Polo & T-Cross - ET34Vehicle Fitment & Part Details This expansion tank for the Audi A1 Sportback cross references OE 2Q0121407, shared across Audi, Seat, and VW. Material is plastic. Confirm compatibility by matching the listed fitment details, any OEM reference numbers supplied, and VIN engine chassis information where variants exist. Key Details SKU ET34 Component Expansion Tank Brand Partquip OEM References Audi Seat VW: 2Q0121407 Audi Seat VW: 2Q0121407A Audi Seat
Vehicle Fitment & Part Details
This expansion tank for the Audi A1 Sportback cross-references OE 2Q0121407, shared across Audi, Seat, and VW. Material is plastic. Confirm compatibility by matching the listed fitment details, any OEM reference numbers supplied, and VIN/engine/chassis information where variants exist.
Key Details
- SKU
- ET34
- Component
- Expansion Tank
- Brand
- Partquip
- OEM References
-
- Audi / Seat / VW: 2Q0121407
- Audi / Seat / VW: 2Q0121407A
- Audi / Seat / VW: 2Q0121407B
- Audi / Seat / VW: 2Q0121407C
- Audi / Seat / VW: 2Q0121407D
- Primary Fitment
- Audi A1 Sportback 30 TFSi DKJA / DKRF (2019-)
- Specs
- Material: Plastic
Key Benefits
- Cross-references 5 OEM numbers shared across Audi, Seat, and VW including 2Q0121407 for verification before ordering.
- Plastic construction matching the original expansion tank material.
OEM Reference Numbers
- Audi / Seat / VW: 2Q0121407
- Audi / Seat / VW: 2Q0121407A
- Audi / Seat / VW: 2Q0121407B
- Audi / Seat / VW: 2Q0121407C
- Audi / Seat / VW: 2Q0121407D
Product Specifications
| Specification | Value |
|---|---|
| Material | Plastic |
Vehicle Fitment
Includes 10 supplied applications.
View Full Vehicle Fitment (10 applications)
| Make | Model | Engine | Years |
|---|---|---|---|
| Audi | A1 Sportback | 30 TFSi DKJA / DKRF | 2019- |
| Audi | A1 Sportback | 35 TFSi DADA / DPCA | 2019- |
| Audi | A1 Sportback | 40 TFSi CZPC / DKZC | 2019- |
| VW | Polo | 1.0 TSi Comfort CHZL | 2018- |
| VW | Polo | 1.0 TSi Comfort CHZJ / DKJA | 2018- |
| VW | Polo | 2.0 GTi CZPC / DKZC | 2018- |
| VW | T-Cross | 1.0 TSi DKJA / DKRF | 2018- |
| VW | T-Cross | 1.0 TSi CHZL / DKLA | 2020- |
| VW | T-Cross | 1.5 TSi DADA / DPCA | 2020- |
| VW | Tiguan | 2.0 | 2019-2021 |
Fitment Notes
- Always match OEM reference number(s) and vehicle details before ordering. Confirm exact fitment using VIN, engine code, or chassis number if multiple variants exist.
Installation / Use / Maintenance Tips
- Compare the new expansion tank to the removed unit before installation to confirm the mounting points, cap type, and hose connections match.
- Flush or clean the cooling system where required before fitting the new part.
- Replace related seals, hoses, or coolant as needed during installation.
- Fill with the correct coolant mixture specified for the application and bleed the cooling system fully.
- After installation, check for leaks and verify the coolant level after the first heat cycle.
Common Questions
Does this expansion tank fit my Audi A1 Sportback?
This part (ET34) is listed for the fitments shown on this page. Confirm by matching the fitment details and verifying VIN/engine/chassis information where variants exist.
What OEM part numbers does this cross-reference?
Listed cross-references: 2Q0121407, 2Q0121407A, 2Q0121407B, 2Q0121407C, 2Q0121407D. Match at least one OEM reference to your original part before ordering.
What brand is this part?
This listing is for a Partquip expansion tank.
How do I confirm fitment if there are multiple variants?
Use VIN, engine code, and chassis/platform details and compare them to the fitment section above. If unsure, request fitment assistance before ordering.
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 2060 reviews
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Product Reviews
★★★★★ 5
Quality Product, Definitely Recommend
Size: 17.2"L x 3.15"W x 0.78"H, Color: Black Walnut, Size: 17.2"L x 3.15"W x 0.78"H, Color: Black Walnut
Looks and feels great. Amazingly smooth, and well-crafted. It fits the length of my keyboard, and has quality grippers on the base to prevent sliding. Was actually really pleased with it.
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Reviewed in the United States on September 15, 2025
★★★★★ 5
High quality solid wood rest
Size: 14.4"L x 3.15"W x 0.78"H, Color: Black Walnut
This wrist rest is nicely finished and was well packed in high-density foam as well as a cardboard box that was wrapped very tightly in thick plastic. It's sanded very, very smooth and is made of beautiful solid walnut, with nonskid pads on the back. The branding is on the side that touches the keyboard, so it is not visible or obtrusive at all. My keyboard is 15.5 inches long, and the 14.4 inch rest looks great up against it. The 0.78" thickness is also very suitable for the thickness of my keyboard.
The product gets 5 stars because it is accurately represented and this is entirely down to personal preference, but something about this rest that I don't love is the degree of incline. I have my keyboard up on the kickstands, and the wrist rest that I already owned slopes pretty dramatically starting from the middle, so it follows the angle of the keyboard. The ZQL wrist rest is about 75% flat and then has a small slope that rounds off on the bottom edge.
Again, this is very much a personal thing; I just brought it up because it's something that people might not think too much about until they actually use it. I think this rest would be great for anyone with very large hands, or with a flat keyboard. It's taking a little getting used to for me, but I really enjoy the smoothness and obvious quality of the wood. A wrist rest is an ergonomic must when it comes to thicker keyboards.
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Reviewed in the United States on August 28, 2025
★★★★★ 5
Nice. I like that the wood feels cool to the touch
Size: 14.4"L x 3.15"W x 0.78"H, Color: Black Walnut, Size: 14.4"L x 3.15"W x 0.78"H, Color: Black Walnut
A nice little wooden wrist rest.
I would suggest not using it as a wrist rest, but use it more as a palm rest, because if you are having pain, putting more pressure on those wrist tendons is not gonna help.
Quality of the item is good. My biggest worry about wooden wrist rests is that they'll not be sanded well, or not smooth, and you'll get a sliver or catch your skin on a piece. Second biggest worry is that they will be slippery, and slide around the desk, or just be covered with a coating or finish that is sticky for human skin.
I'm happy to say, that this didn't have those issues. Mine is smooth, and made of dense wood. It doesn't feel cheap and made with hollow wood. There are no burs or slivers. It's not lacquered or sticky for your hands. It doesn't stain my hands when in use. And it has rubber feet to help grip, so it doesn't slide around.
One benefit to having a wood wrist rest, is that it stays "cool" to the touch longer than cloth or gel pads. But, at the same time, one heated, it takes longer to cool back down.
I've found that I quite like the cool sensation that is unique to wood.
I'm happy with it and the overall quality.
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Reviewed in the United States on August 5, 2025
★★★★★ 4
Great looking wrist rest but lacks strong grip
The walnut wood looks and feels great and gives my desk setup a more premium look. The dimensions are as described on the product page. I have no doubt this wrist rest will last a long time given how solid and well made it is.
The only downside is that it tends to move around a bit more than my old silicon wrist rest. The grip on the bottom isn’t as strong so I find myself readjusting it occasionally when gaming. Overall, recommended.
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Reviewed in the United States on July 29, 2025
★★★★★ 5
Very classy looking! Perfect height and length for TKL keyboards!
This wrist rest is the perfect height and length for my TKL keyboards! The wood is soft and smooth. It looks VERY classy compared to some of the wrist rests I've used in the past. The non-slip pads work great too.
The only thing I could find that was wrong is that the logo is upside down. It's not visible though because it's the edge that meets the keyboard so it's never seen. I find it endearing actually! Everything else is perfect, so I'd definitely recommend!
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Reviewed in the United States on September 23, 2025
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