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

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

Marsoni

M251S

$347.50

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 Guard - BlackThe 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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Fast: 2-3 business days
Express: 1-2 business days

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I have been buying Under Armour undergarments for years and have noticed a steady decline in quality. These socks are no different. I purchased another six packs of very similar styled Under Armour socks in 2023 and recently they have started wearing out. Those socks are no longer available for reorder, but these extremely similar socks were so I ordered them. The quality difference is obvious just by looking at and feeling them. They are more of a faded black/brown than the black pictured or the black that the three year old socks still are. The material is completely different and feels lighter. When wearing them they already feel like they are bunching up in my shoes, which the old ones never did. I do not expect these to last even a year and will not buy them again.

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Reviewed in the United States on March 29, 2026

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Regina Hall

Waukegan, US

★★★★★ 5

Happy Son

Size: Large, Color: (001) Black / Black / Castlerock

My sons loves them. They are all he wears.

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Reviewed in the United States on April 19, 2026

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Bibiana colon

Bozeman, US

★★★★★ 5

Medias

Size: One Size, Color: (403) Washed Navy / White / Halo Gray

Muy buenas, cómodas me encantaron

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Reviewed in the United States on April 5, 2026

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K M

Phoenix, US

★★★★★ 5

Excellent sport sock!

Size: One Size, Color: (100) White / White / Halo Gray

Molds onto foot, super soft and breathable. A lot of my ankle socks tend to slip or cut off blood circulation. This one literally is a perfect fit. No slip. After playing hours of tennis every week, my feet don't feel sore or bruised. Must buy!

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Reviewed in the United States on October 9, 2025

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Placeholder

Boise, US

★★★★★ 5

Comfort!

Size: One Size, Color: (100) White / White / Halo Gray

Very comfortable! Thinner than the picture shows, but I like the fact that they are no show but still higher in the back and front to protect my heels and such.

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Reviewed in the United States on September 6, 2025