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CSF BMW B58/B48 Front Mount Triple-Pass Heat Exchanger w/Rock Guard

Marsoni M251S
Sale price$347.50
Pay 4 payments of $86.88 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
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
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Your CSF BMW B58/B48 Front Mount Triple-Pass Heat Exchanger w/Rock Guard orders ship within 1-2 business days.

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  • Standard: 3-7 business days
  • Fast: 2-3 business days
  • Express: 1-2 business days

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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]
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4.1 ★★★★★
Based on 220 reviews
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Verified Purchase
David
Birmingham, US
★★★★★ 5
Good quality
Size: Medium, Color: Black/Assorted
Comfy and sturdy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 27, 2025
B
Verified Purchase
Brooke
Louisville, US
★★★★★ 5
Favorite socks
Size: Medium, Color: Black/Assorted
These are my go to socks! Love these. Great towards sweat and different weather temperatures. Mostly use for working out and love them. Will be getting more!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2024
M
Verified Purchase
Maranda
Birmingham, US
★★★★★ 5
Great fit
Size: Medium, Color: White
Perfect fit and they don't slide off the back of your ankle.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2026
J
Verified Purchase
Jessica Burdett
Lexington, US
★★★★★ 5
Best socks!
Size: Medium, Color: Blue
I love these socks! They last for years and they fit so nicely on my feet. I love that I can wear the in tennis shoes or wool boots and they never move!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 21, 2025
J
Verified Purchase
john jeffrey elliott
Massapequa, US
★★★★★ 1
TOO SMALL
Size: Medium, Color: Blue
Nice socks, but they are way too small. Says they fit size 6 - 10. I kept 3 ( I wear size 8) and gave 3 to my daughter (size 8.5). We both agreed that they were just too small.
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Reviewed in the United States on May 12, 2026

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