CSF High Performance Heat Exchanger w/rock guard - BMW B58/B48

CSF High Performance Heat Exchanger w/rock guard - BMW B58/B48

Marsoni

M251S

$325.00

Get it in 3 business days with 1 day shipping. Friday, May 29

CSF High Performance Heat Exchanger w/rock guard - BMW B58/B48Core size: 524mm Length x 478mm Height x 69mm Wide 68mm 2 row core with CSFs B tube technology (worlds largest 2 row core) 6. 5 mm multi louvered fin height Triple pass flow design Included detachable rock guard OEM CNC Machined mounting location pins and brackets Direct Plug and Play, including CNC, machined Quick connect inlet outlet water fittings No Modifications needed to install Fits: F2x 220i F2x 230i F2x M240i F3x 320i 420i F3x 330i 430i F3x

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The quality is excellent. They are more of a faded red. I ordered a 10 worried they might be snug but that was a mistake. I should have stuck with my normal size 8. (I purchased an Amazon brand of this style that runs small and the size 10 feels more like an 8.) I love the length-not too short and not too long. They are sturdy cotton. There is not any stretch to the fabric. I’m giving them to a friend. I actually tried to shrink them by washing them in hot water and hot dryer but it didn’t make them fit me any better. Since they were already too big, I can’t really say if they shrunk by doing this. They weren’t huge on me before washing and seemed to fit the same way after. I tried wearing them all day and they seemed to loosen up even further. I was continuously pulling them up. I really feel like the sizing is accurate and you can be pretty confident of ordering your regular size. I’ve already reordered the size 8. I’ll update my review if there any issues with that size.

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Reviewed in the United States on July 19, 2025

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Emily C.

Draper, US

★★★★★ 3

Unattractive but well made

Size: 4, Color: Sand

The style was unflattering overall. The shorts fit well in the waist, legs, and seat; they just made me look masculine which is not the look I was going for. For reference I am 5’7, 135#, and purchased a size 4 (which again, fit me well). I’m not sure if the issue was the length, or maybe they just down have a flattering cut - they are very boxy and hide any curves I have. 3 stars because the fit was good and they are well made. But just not attractive.

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Reviewed in the United States on May 4, 2026

Verified Purchase

Wild-T

Phoenix, US

★★★★★ 5

Nice look and feel

Size: 6, Color: Sand

These are beautiful shorts. Bought these for my wife and they look great and have a nice texture that gives them a higher and look and feel.

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Reviewed in the United States on January 10, 2026

Verified Purchase

Louisville, US

★★★★★ 4

Nice design Size runs big

Size: 4, Color: Nautical Navy

The size 4 runs kinda big. It’s a very relaxed fit. I’m 5’8” 140 lbs and I need a belt to keep the size 4 up. Very nice fabric, great cut. I’m happy with them just didn’t expect them to be as baggy.

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Reviewed in the United States on August 6, 2025