SKU: 20823783065

Expansion Tank for Audi A1 Sportback, VW Polo & T-Cross - ET34

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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:
  1. 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
SKU: 20823783065

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4.0 ★★★★★
Based on 22 reviews
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Product Reviews
C
Verified Purchase
Crad
Belleville, US
★★★★★ 4
8/10 Front Pocket Wallet
Color: Black (Front Pocket)
It's a pleasing solution for me. The slim, pocketed design fits well in my front pocket. It probably fits other pockets well too. It's not perfect. But, it's solving for an imperfect solution that Apple is takling with their phones. Tap to pay with phones and digital ID will change the market for wallets. The physical size of cards limits how readily you can access any one card. It takes a bit of extra dexterity to pinch or slide some of the cards out. Ideally you'd have 4 on the outside, with remaining cards tucked in the center pocket. I just need more than 1/4 inch of card face to slide one out readily.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2026
D
Verified Purchase
David Poll
Los Angeles, US
★★★★★ 5
Very nice wallet.
Color: Carhartt Brown (Trifold)
Very nice.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026
D
Verified Purchase
D. A.
Birmingham, US
★★★★★ 5
Size
Color: Black (Bifold)
It’s not a thick wallet, which is what my husband likes. Makes sitting or driving for long periods with it in his back pocket better. Has everything larger wallets have. Will purchase it again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 19, 2026
W
William P
Whiting, US
★★★★★ 5
Rugged wallet built to last (even if wallets themselves are becoming obsolete)
Color: Black (Trifold), Color: Black (Trifold)
This is a really well-made wallet. If you’re familiar with Carhartt products, the construction here is exactly what you’d expect: tough, practical, and clearly designed to take some abuse. The material is "700D nylon duck fabric", which feels thick and durable—more like a piece of work gear than a fashion accessory. In the photos you can see the tight stitching, heavy canvas-like texture, and reinforced seams, all of which suggest it should last for years. It feels like the kind of wallet that could live in a back pocket, get sat on, tossed around, and still keep going. Inside, the layout is simple and functional. The see-through mesh ID window is one of my favorite touches—it makes it easy to show an ID without removing it. The card slots are snug and the trifold layout keeps everything organized. There’s also a small zippered pocket, which you can see in the photos along the side. It’s not huge, but it can hold a few coins or maybe a couple of small keys. The wallet also includes RFID blocking, which is nice if you’re concerned about wireless card scanning. On the flip side, that also means you can’t just tap the wallet against a reader for contactless payments. You’ll need to take the card out first. Carhartt also advertises water resistance, which makes sense given the nylon construction. Realistically, most of us aren’t dunking our wallets in water, but it’s nice to know it could handle rain or the random spill (though come-on! How often does that happen with a wallet??) One interesting thing: wallets themselves are starting to feel a little outdated. I rarely carry one anymore, and most of my family uses phone wallets or digital payments. But if you’re someone who still likes having a physical wallet for cards, ID, and some cash, this is a solid one. It’s a simple, rugged, no-nonsense wallet that should last a long time - very much in line with the Carhartt reputation. If you’re still in the wallet camp, this is a dependable choice. Plus it makes a nice gift.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 2, 2026
C
cella wilson
Omaha, US
★★★★★ 5
Sturdy, well-made wallet
Color: Black (Trifold)
Sturdy, well-made wallet, soft to the touch. nice looking. seems comfortable enough in the back pocket. good size. made from quality materials.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026

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