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Ships within 48 hours · Estimated delivery Oct 9 - Oct 14
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Description
CSF BMW B58/B48 Front Mount Triple-Pass Heat Exchanger w/Rock GuardThe original OEM B58 heat exchanger is a 1 row unit that is 27mm thick. In comparison, CSF has used its industry exclusive world's largest 2 row core (68mm) with CSF's B Tube technology. A unique tank design allows the larger CSF core to still fit into the OEM cooling system housing. Another critical feature of the CSF BMW B58 high performance heat exchanger is its unique triple pass flow design. The water traveling through the upgraded heat exchanger
The original OEM B58 heat exchanger is a 1-row unit that is 27mm thick. In comparison, CSF has used its industry-exclusive world's largest 2-row core (68mm) with CSF's B-Tube technology. A unique tank design allows the larger CSF core to still fit into the OEM cooling system housing. Another critical feature of the CSF BMW B58 high-performance heat exchanger is its unique triple-pass flow design. The water traveling through the upgraded heat exchanger flows through the radiator three times before exiting the cooler and flowing back into the manifold charge cooler. This ensures that the outlet water temperature of the heat exchanger is the absolute lowest it can be. The OEM design, as well as more expensive aftermarket designs, all have single-pass flow structures.This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2017-2021 | BMW | 230i | Base |
| 2017-2021 | BMW | 230i xDrive | Base |
| 2016,2018 | BMW | 330e | Base |
| 2017 | BMW | 330e | iPerformance |
| 2017-2018 | BMW | 330i | Base |
| 2017-2018 | BMW | 330i GT xDrive | Base |
| 2017-2019 | BMW | 330i xDrive | Base |
| 2016-2018 | BMW | 340i | Base |
| 2017-2019 | BMW | 340i GT xDrive | Base |
| 2016-2018 | BMW | 340i xDrive | Base |
| 2017-2020 | BMW | 430i | Base |
| 2017-2020 | BMW | 430i xDrive | Base |
| 2017-2020 | BMW | 430i xDrive Gran Coupe | Base |
| 2017-2020 | BMW | 440i | Base |
| 2017-2020 | BMW | 440i Gran Coupe | Base |
| 2017-2020 | BMW | 440i xDrive | Base |
| 2017-2020 | BMW | 440i xDrive Gran Coupe | Base |
| 2017-2021 | BMW | M240i | Base |
| 2017-2021 | BMW | M240i xDrive | Base |
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 16 reviews
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Product Reviews
★★★★★ 5
This stuff really works — turns sunburn into a tan! ☀️🌺⭐️⭐️⭐️⭐️⭐️
I was skeptical, but this really does what it says! I got a little too much sun and used this right after showering no peeling, no pain, and within a day or two, my skin turned a gorgeous golden brown instead of burning. It feels soothing, smells great, and absorbs quickly without being sticky. Definitely a must-have for beach trips or after any sun exposure. I’ll never go without it again!
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Reviewed in the United States on October 7, 2025
★★★★★ 5
Saved My Skin and Left Me With a Tan (and I'm a Redhead!)
Disclosure: For the first week I did layer the Burn to Brown with Solar Recover Save Your Skin Spray
As a redhead who accidentally used 30 spf for a long weekend on the beach - this stuff 100% works!!! 3 months later and I still have a tan!!! Not only did it turn the burn to tan, it also cooled down my skin so I could sleep a little more comfortably! For the first week I used both the Burn to Brown lotion (which I prefer for it's cooling effect) and Solar Recovery spray (which I believe helped more with peeling). Would 100% buy both again, especially if you're like me and spend every free moment at the beach despite your fair skin. I used generously multiple times a day after my horrible burn and still had half a bottle left.
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Reviewed in the United States on October 27, 2025
★★★★★ 5
Sunburn relief
Works like a charm. Smells delicious!! Takes the sting out of sunburn.
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Reviewed in the United States on April 25, 2026
★★★★★ 5
Highly recommend!!
I honestly cannot put words how much this stuff has helped my sunburn. It smells good, instantly make the burn feel better, and lasts a long time. If you need something, that’s a little bit better than aloe vera 10 out of 10 would recommend this one!!!
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Reviewed in the United States on May 31, 2026
★★★★★ 4
URGENT NOTE: Test in a small area first! Worked, but I'm covered in a rash from contact dermatitis.
You may want to test this stuff on a small area first before slathering it on. I had a bit of sunburn on my face and after showering, applied the gel and it worked great! Then.....contact dermatitis. My whole face blew up in a rash. Unfortunately, this didn't happen until the second day and I had already used the gel on my arms and legs as well. My face has cleared up, but the rest of me looks like I rolled around in poison ivy. I want to scratch my skin off. Pics don't do it justice. This is day 4 of the rash breaking out, so it's cleared up a little and I plan to borderline OD on benadryl this evening before I scratch my skin off. I wish I wasn't allergic, because it truly did work for my sunburn. I've not peeled at all and I was rather crispy.
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Reviewed in the United States on November 21, 2025