CSF Race-Spec Oil Cooler - BMW E46 M3

Marsoni

M251S

$274.50

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

CSF Race-Spec Oil Cooler - BMW E46 M3Race spec oil cooler from CSF. Designed, developed, and track proven in collaboration with BMW M3 tuning specialist and parts manufacturer, Rogue Engineering Replaces OEM unit single pass design and plastic shroud with a unique top bottom dual pass design for maximum surface area and flow. Drop in fit requiring no modifications to install. Accepts factory oil line connections Fully TIG welded extruded endtank design vs. OEM mechanically jointed and

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We offer a 30-day return/exchange service after receiving.
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I'm going to write a review right away so I can't comment on if it keeps perfect time as I just got this watch ring 90 mins ago. But first impression - AWESOME! So comfortable for me, seems very well made and it is definitely keeping time for my tiny time I've had it. I am very hopeful it is going to be sturdy and last and the battery does well. A really stylish fun way to keep track of time and have a statement piece.

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Reviewed in the United States on April 18, 2026

Verified Purchase

Ruby L.

New York, US

★★★★★ 5

Unique watch for sure

Color: Silver, Size: 15MM

So good, so cute. The face is pretty small but what do you want from a ring watch? I would say it is not for bigger fingers. I wear a size 7.5 and it fits perfectly. It does have an elastic band but when I tried it on a larger finger, it definitely pinched. I am of fan of different watches so this fits the bill. It's unique and an eye-catcher. Well done Fossil.

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Reviewed in the United States on October 7, 2025

Verified Purchase

Amazon Customer

Charlottesville, US

★★★★★ 5

Pretty. Tiny. Hopefully has good battery life. UPDATE: The silver one was defective.

Color: Gold Raquel, Size: 14MM, Color: Gold Raquel, Size: 14MM

I bought both the gold and the silver ones. I have a collection of ring watches but most of them are sets you can buy for cheap. These are my first made by a well known watch company. They look big on picture but they are tiny. I bought it so when my smartwatch dies I have one on my ring to tell the time. I don't like going on my phone to check the time just to avoid distractions. I hope the battery lasts long. Updated review: I started using the gold one and it works great! The silver one wasn't working so I processed a return for it. However when they shipped the replacement, there was nothing inside the tin can fossil case. I called Amazon and they refunded me for the silver one. The product works great. I probably got a defective one. My fear is maybe someone took the ring before packing it for replacement. That's just wrong. I'm going to get the silver one from Macy's instead.

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Reviewed in the United States on October 13, 2024

Verified Purchase

Ss in calif

Natrona Heights, US

★★★★★ 5

Worth the money

Color: Gold Glitz, Size: 15MM

Beautiful watch ring. Looks more expensive than what the price. Very nice.

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Reviewed in the United States on March 12, 2026

Verified Purchase

Amazon Customer

Bozeman, US

★★★★★ 1

Cheaply made

Color: Gold Glitz, Size: 15MM

I really love the concept and honestly it’s super cute BUT the diamond around the face of the watch fell off within the first wear:/ so unfortunate because it has so much potential.

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Reviewed in the United States on September 15, 2025