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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
4.0 ★★★★★
Based on 2214 reviews
Sort
Product Reviews
★★★★★ 5
Fit is great!
Size: 6-10, Color: Halo Gray/Assorted
These socks fit perfectly and never slip!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2026
★★★★★ 5
LOVE THEM!!
Size: Small, Color: (001) Black / Black / Castlerock
LOVE! These socks are so comfortable! I wear a 5 in women's and a 3 in big kid shoes. The small fit me perfectly. I see where some say they run small but I can't say that was an issue for me. They are "snug" but thats what you want with a no show sock. I feel they have support vs the ones i used to buy at Walmart. They are very soft! I am actually buying more today and throwing my other ones in the trash!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 18, 2026
★★★★★ 5
So will not write down your foot
Size: Medium, Color: (001) Black / Black / Castlerock
I love these socks. They have a little bit of gel on the top of the heel for support in your tennis shoes and so your socks don’t write down. Very good quality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
★★★★★ 5
Comfy and Stay Put
Size: Medium, Color: (002) Black / Black / Halo Gray
These socks are honestly great. They’re super thin and light, so once you have them on, you kind of forget they’re even there. No bulky feeling in your shoes at all.
The best part is they actually stay on. I hate no-show socks that slide down after five minutes, and these don’t do that. The little grip on the heel really works, so you’re not constantly adjusting them all day.
They’re breathable too, which is nice if your feet run warm. They dry fast and don’t get that gross sweaty feeling. And there’s no annoying seam on the toe, so nothing rubs or feels uncomfortable.
Basically, they’re just comfy, stay put, and don’t cause problems — which is all I want from socks.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 16, 2026
★★★★★ 5
Perfect sucks
Size: Medium, Color: (001) Black / Black / Castlerock
Wonderful socks . The weight is perfect !! These do not slip when in a shoe they stay out !!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026
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