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Description
Cap Expansion Tank for BMW 2, 3 & 4 - 431420Vehicle Fitment & Part Details The Cap Expansion Tank is listed for the BMW 2 Coupe (2021 2026). Pressure: 2. 0 Bar. Confirm compatibility by matching the listed fitment details. Verify VIN engine. Key Details SKU 431420 Component Cap Expansion Tank Specs Pressure: 2. 0 Bar Primary Fitment BMW 2 Coupe (2021 2026) Listing Highlights Listed for selected BMW applications shown in the fitment table. Pressure: 2. 0 Bar. Vehicle Fitment Includes 76 supplied
Vehicle Fitment & Part Details
The Cap Expansion Tank is listed for the BMW 2 Coupe (2021-2026). Pressure: 2.0 Bar. Confirm compatibility by matching the listed fitment details. Verify VIN/engine.
Key Details
- SKU
- 431420
- Component
- Cap Expansion Tank
- Specs
- Pressure: 2.0 Bar
- Primary Fitment
- BMW 2 Coupe (2021-2026)
Listing Highlights
- Listed for selected BMW applications shown in the fitment table.
- Pressure: 2.0 Bar.
Vehicle Fitment
Includes 76 supplied applications covering BMW. An additional 5 applications are not shown here due to listing-length limits - see the live product listing for the complete fitment list. Use the full table below to confirm model, chassis, year range, engine and power before ordering.
View Full Vehicle Fitment (76 applications)
| Make | Model | Chassis | Years | Engine | Power |
|---|---|---|---|---|---|
| BMW | 2 Coupe | G42, G87 | 2021-2026 | M2 S58 B30 A | 338 kW / 460 HP |
| BMW | 3 | E90 | 2004-2011 | M3 S65 B40 A | 309 kW / 420 HP |
| BMW | 3 | F30, F80 | 2011-2018 | M3 S55 B30 A | 317 kW / 431 HP |
| BMW | 3 Convertible | E93 | 2006-2013 | M3 S65 B40 A | 309 kW / 420 HP |
| BMW | 3 Coupe | E92 | 2006-2013 | M3 S65 B40 A | 309 kW / 420 HP |
| BMW | 3 Coupe | E92 | 2006-2013 | M3 GTS S65 B44 A | 331 kW / 450 HP |
| BMW | 4 Convertible | F33, F83 | 2013-2026 | M4 S55 B30 A | 317 kW / 431 HP |
| BMW | 4 Coupe | F32, F82 | 2013-2026 | M4 S55 B30 A | 317 kW / 431 HP |
| BMW | 5 | E60 | 2001-2010 | 523 i N52 B25 A; N52 B25 B; N52 B25 BE | 130 kW / 177 HP |
| BMW | 5 | E60 | 2001-2010 | 523 i N52 B25 A; N52 B25 BE | 140 kW / 190 HP |
| BMW | 5 | E60 | 2001-2010 | 523 i N53 B25 A | 140 kW / 190 HP |
| BMW | 5 | E60 | 2001-2010 | 525 i M54 B25 256S5 | 141 kW / 192 HP |
| BMW | 5 | E60 | 2001-2010 | 525 i N52 B25 A; N52 B25 B; N52 B25 BF | 160 kW / 218 HP |
| BMW | 5 | E60 | 2001-2010 | 525 xi N52 B25 A | 160 kW / 218 HP |
| BMW | 5 | E60 | 2001-2010 | 530 i M54 B30 306S3 | 170 kW / 231 HP |
| BMW | 5 | E60 | 2001-2010 | 530 i N52 B30 A; N52 B30 BF | 190 kW / 258 HP |
| BMW | 5 | E60 | 2001-2010 | 530 i N52 B30 A; N52 B30 BF | 200 kW / 272 HP |
| BMW | 5 | E60 | 2001-2010 | 530 i N53 B30 A | 200 kW / 272 HP |
| BMW | 5 | E60 | 2001-2010 | 535 i N54 B30 A | 225 kW / 306 HP |
| BMW | 5 | E60 | 2001-2010 | 545 i N62 B44 A | 245 kW / 333 HP |
| BMW | 5 | E60 | 2001-2010 | 550 i N62 B48 B | 270 kW / 367 HP |
| BMW | 5 | E60 | 2001-2010 | M5 S85 B50 A | 373 kW / 507 HP |
| BMW | 5 | F10 | 2009-2016 | 523 i N52 B25 A; N52 B25 AF; N52 B25 B; N52 B25 BF | 150 kW / 204 HP |
| BMW | 5 | F10 | 2009-2016 | 530 i N52 B30 A; N52 B30 AF; N52 B30 BF | 190 kW / 258 HP |
| BMW | 5 | F10 | 2009-2016 | 535 i N55 B30 A | 225 kW / 306 HP |
| BMW | 5 | F10 | 2009-2016 | 550 i N63 B44 A | 300 kW / 408 HP |
| BMW | 5 | F10 | 2009-2016 | ActiveHybrid N55 B30 A | 250 kW / 340 HP |
| BMW | 5 | G30, F90 | 2016-2026 | M 550 i xDrive N63 B44 D | 390 kW / 530 HP |
| BMW | 5 | G30, F90 | 2016-2026 | M5 S63 B44 B | 441 kW / 600 HP |
| BMW | 5 | G30, F90 | 2016-2026 | M5 Competition S63 B44 B | 460 kW / 625 HP |
| BMW | 5 | G30, F90 | 2016-2026 | M5 CS S63 B44 B | 467 kW / 635 HP |
| BMW | 5 Gran Turismo | F07 | 2009-2017 | 535 i N55 B30 A | 225 kW / 306 HP |
| BMW | 5 Gran Turismo | F07 | 2009-2017 | 550 i N63 B44 A | 300 kW / 408 HP |
| BMW | 5 Touring | E61 | 2004-2010 | 523 i N52 B25 A; N52 B25 B; N52 B25 BE | 130 kW / 177 HP |
| BMW | 5 Touring | E61 | 2004-2010 | 523 i N53 B25 A | 140 kW / 190 HP |
| BMW | 5 Touring | E61 | 2004-2010 | 525 i M54 B25 256S5 | 141 kW / 192 HP |
| BMW | 5 Touring | E61 | 2004-2010 | 525 i N52 B25 A; N52 B25 B; N52 B25 BF | 160 kW / 218 HP |
| BMW | 5 Touring | E61 | 2004-2010 | 530 i N52 B30 A; N52 B30 BF | 190 kW / 258 HP |
| BMW | 5 Touring | E61 | 2004-2010 | 530 i N53 B30 A | 200 kW / 272 HP |
| BMW | 5 Touring | E61 | 2004-2010 | 545 i N62 B44 A | 245 kW / 333 HP |
| BMW | 5 Touring | E61 | 2004-2010 | 550 i N62 B48 A; N62 B48 B | 270 kW / 367 HP |
| BMW | 5 Touring | E61 | 2004-2010 | M5 S85 B50 A | 373 kW / 507 HP |
| BMW | 5 Touring | F11 | 2009-2017 | 523 i N52 B25 A; N52 B25 AF; N52 B25 B | 150 kW / 204 HP |
| BMW | 5 Touring | F11 | 2009-2017 | 530 i N52 B30 A; N52 B30 AF | 190 kW / 258 HP |
| BMW | 5 Touring | F11 | 2009-2017 | 535 i N55 B30 A | 225 kW / 306 HP |
| BMW | 5 Touring | F11 | 2009-2017 | 550 i N63 B44 A | 300 kW / 408 HP |
| BMW | 6 | E63 | 2003-2010 | 645 Ci N62 B44 A | 245 kW / 333 HP |
| BMW | 6 | E63 | 2003-2010 | 650 i N62 B48 B | 270 kW / 367 HP |
| BMW | 6 | E63 | 2003-2010 | M S85 B50 A | 373 kW / 507 HP |
| BMW | 6 Convertible | E64 | 2004-2010 | 645 Ci N62 B44 A | 245 kW / 333 HP |
| BMW | 6 Convertible | E64 | 2004-2010 | 650 i N62 B48 B | 270 kW / 367 HP |
| BMW | 6 Convertible | E64 | 2004-2010 | M6 S85 B50 A | 373 kW / 507 HP |
| BMW | 6 Convertible | F12 | 2010-2018 | 640 i N55 B30 A | 235 kW / 320 HP |
| BMW | 6 Convertible | F12 | 2010-2018 | 650 i N63 B44 A | 300 kW / 408 HP |
| BMW | 6 Coupe | F13 | 2011-2017 | 640 i N55 B30 A | 235 kW / 320 HP |
| BMW | 6 Coupe | F13 | 2011-2017 | 650 i N63 B44 A | 300 kW / 408 HP |
| BMW | 7 | F01, F02, F03, F04 | 2008-2015 | 740 i, Li N54 B30 A | 240 kW / 326 HP |
| BMW | 7 | F01, F02, F03, F04 | 2008-2015 | 750 i, Li N63 B44 A | 300 kW / 408 HP |
| BMW | 7 | F01, F02, F03, F04 | 2008-2015 | 760 i, Li N74 B60 A | 400 kW / 544 HP |
| BMW | 8 Convertible | G14, F91 | 2018-2026 | M 850 i xDrive N63 B44 D | 390 kW / 530 HP |
| BMW | 8 Convertible | G14, F91 | 2018-2026 | M8 Competition S63 B44 B | 460 kW / 625 HP |
| BMW | 8 Coupe | G15, F92 | 2018-2026 | M 850 i xDrive N63 B44 D | 390 kW / 530 HP |
| BMW | 8 Coupe | G15, F92 | 2018-2026 | M8 Competition S63 B44 B | 460 kW / 625 HP |
| BMW | 8 Gran Coupe | G16, F93 | 2019-2026 | M 850 i xDrive N63 B44 D | 390 kW / 530 HP |
| BMW | 8 Gran Coupe | G16, F93 | 2019-2026 | M8 Competition S63 B44 B | 460 kW / 625 HP |
| BMW | X5 | E70 | 2006-2013 | 3.0 si N52 B30 A; N52 B30 AF; N52 B30 BF | 200 kW / 272 HP |
| BMW | X5 | E70 | 2006-2013 | 4.8 i xDrive N62 B48 B | 261 kW / 355 HP |
| BMW | X5 | E70 | 2006-2013 | M S63 B44 A | 408 kW / 555 HP |
| BMW | X5 | E70 | 2006-2013 | xDrive 30 i N52 B30 A | 200 kW / 272 HP |
| BMW | X5 | E70 | 2006-2013 | xDrive 35 i N55 B30 A | 225 kW / 306 HP |
| BMW | X5 | E70 | 2006-2013 | xDrive 48 i N62 B48 B | 261 kW / 355 HP |
| BMW | X5 | E70 | 2006-2013 | xDrive 50 i N63 B44 A | 300 kW / 408 HP |
| BMW | X5 | G05, F95 | 2018-2026 | M S63 B44 B | 441 kW / 600 HP |
| BMW | X5 | G05, F95 | 2018-2026 | M Competition S63 B44 B | 460 kW / 625 HP |
| BMW | X6 | E71, E72 | 2007-2014 | M S63 B44 A | 408 kW / 555 HP |
| BMW | X6 | E71, E72 | 2007-2014 | xDrive 35 i N54 B30 A; N55 B30 A | 225 kW / 306 HP |
Fitment Notes
- Always match vehicle details before ordering. Verify VIN/engine.
Compatibility Verification Notes
- Confirm compatibility using VIN, engine code, chassis / platform, OE reference and original part comparison before ordering.
- Match the supplied fitment details to your vehicle, including model, year range and any listed engine or chassis information.
- Fitment data may vary by production date, market, import history and engine variant.
- This listing is for part identification and compatibility checking only. Installation must be carried out according to the vehicle manufacturer's service information by a suitably qualified person.
Common Questions
Will the Cap Expansion Tank fit my BMW 2 Coupe?
This part (431420) is listed for the fitments shown on this page. Confirm by matching the fitment details. Verify VIN/engine.
How do I confirm fitment if there are multiple variants?
Compare the supplied fitment details, original part details and any listed variant information before ordering. Verify VIN/engine.
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
4.7 ★★★★★
Based on 20 reviews
Sort
Product Reviews
★★★★★ 5
Great, Large sturdy cabinet
Color: Black, Size: 23x29, Color: Black, Size: 23x29
I was looking to add more storage to my tint bathroom, and so a cabinet for over the toilet was my first plan of attack. This cabinet is large, has a semi open niche (protected from hella dust), and the doors match the style of my builders vanity, so i went with it.
Assembly:
It was VERY easy to assemble. Some things you get off amazon are a nightmare, this was thankfully pretty quick and sturdy. It came with all the hardware I needed, and the only assembly tool was a Philips Head screwdriver, and the different pieces were labeled well.
Mounting:
THE WALL ANCHORS INCLUDED ARE TRASH. Thank you for attending my TED talk. The cleat for mounting is about a foot long, so while i couldnt get it mounted in 2 studs, i mounted one side in a stud and used a toggle bolt for the other side. I would HIGHLY RECOMMEND using a toggle bolt for something this heavy, and having one end directly in a stud. The french cleat mount meant i could slide the cabinet a bit to center it above the toilet, but with some lifting. That isnt gonna move at all with everyday use. I also like that i can take it down and put it back up easily.
Smell:
I didnt notice any weird smells on mine, tho it did sit in my hallway for about a week before i got around to assembling it.
I used some stick and peel tile to dress up mine, and ill also add some hardware to make it look more bespoke, but overall im super thrilled with it. Would recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 10, 2023
★★★★★ 4
Beautiful and Sturdy
Color: Texture Grey, Size: 25x30, Color: Texture Grey, Size: 25x30
The cabinet relatively high quality and sturdy. Assembly was not difficult, it took less than an hour, and the color is beautiful and exactly as pictured. The soft close doors are such a big bonus as I tend to accidentally slam doors shut so these doors are me-proof. It arrived in well insulated packaging, there were no missing parts, and the instructions were not difficult to decipher. However, I do have a few items that bothered me enough to deduct a star from the rating
1) The wall mounting system, has predrilled holes that are not the standard 16 inch apart per house's studs. The mounting hardware was subpar and we ended up procuring more sturdy mounting hardware. The cabinet is fairly heavy when it's empty so we wanted to ensure adequate support. The cost of the cabinet is higher than many others I looked and would have liked better mounting hardware - minus one star
2) I wish I had paid closer attention to the shelf heights as the clearance from the middle shelf to the top shelf when it's in the top shelf is in the highest position (top shelf is the only shelf that can be moved) was not tall enough to hold my large industrial size shampoo and conditioner bottles so storage was a little disappointing but I consider it my mistake for not measuring before purchasing - no rating deduction
3) We tried multiple configurations to try and get the doors to perfectly align and could not make it happen. Alignment was disappointing but again I am going to blame that on operator error - no rating deduction
Overall, it is a nice cabinet and works well and looks good. I would absolutely recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
★★★★★ 5
Lovely cabinet but needs time to put together!
Color: White, Size: 23x29
The overall cabinet is what I was looking for. Very sturdy and good looking. The main problem my husband had was with the directions to put it together. The pictures were hard to see and the majority of written directions were hard to understand. Definitely took longer to put together than should have taken. But when it was completed and hung, I have to say I love it. Be prepared to have patience and enough time set aside to put it together.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 10, 2026
★★★★★ 5
Solid cabinet; all aligns well
Color: White-1927, Size: 19x27
Amazon declined my first buy/ship if this cabinet as it was damaged when it reached Amazon. That was fine, but I still had to go thru ‘return’ process of Amazons, w/o a product to return; so I used their ‘chat feature’ to explain—went smoothly, and they secured the replacement for me; I just need to check latest bill to be sure I was only charged once. OK, now onto the cabinet: Solid materials (for MDF-which I generally avoid), and assembled + installed in just 1hr. Btw, I add ‘glue’ the the provided 8 wood dowels used for assembly. The doors hinge adjustments are easy to align doors for final finish. While this cabinet ‘hangs’ on its cleat, I did add one screw to the inside-bottom of cabinet to ensure no one inadvertently may ‘lift’ the cabinet off its cleat. This is rock solid secured to me wall above toilet for great extra storage in the kids’ bath! Overall, a good buy; but did expect it to be cheaper price considering MDF material and made in China. I look for country of origin now and try to buy from US friendly countries. Good luck, Mark in NY.
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Reviewed in the United States on April 1, 2024
★★★★★ 5
Very impressive
Color: Navy Blue, Size: 23x29
I've had a lot of experience with modern furniture that you have to put together. Most of it, I worry about the durability of the product. Most is put together with repurposed particle board. So it's heavy and I would think not durable - especially in a damp environment.
Saying that, I was very impressed with this product.
My experience with the product to this point has been the best of those type of products. It shipped very well...everything in place and neatly packed. The engineered wood (resembles plastic) seems solid, water resistant at a minimum, and scratch resistant. The instructions provided - while the product was easy to assemble - were amongst the clearest I've seen from such a product.
What impressed me the most was the thought behind the design of this product. The hinges are perfect for the product. The doors can be easily removed by pushing a button on the hinge. The holes on the boards were perfectly drilled - so much so that I didn't have to pound any board to put them together. The back wasn't nailed on and the slot used for the backing was spot on.
If I had to choose negatives (and I'm really nit-picking because this is really designed that well) it was that the shelf ends up being a bit loose and I would have liked the mounting board to match the width of the slot it was being used to fill. Both can be fixed at the house by home products and screws.
I was so impressed that I would go and buy another product from this manufacturer (and look for the manufacturer by name). IT is that good.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 4, 2022
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