


CSF 11-16 BMW 135i(X) 5 Door F20 / M135i(X) 3 Door F21 Race-Spec Oil Cooler
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
CSF 11-16 BMW 135i(X) 5 Door F20 / M135i(X) 3 Door F21 Race-Spec Oil CoolerUtilizing CSF's AC Condenser technology, their innovative dual core in series system features an additional 5 rows of super high pressure multi channel micro tubes on the rear side of the oil cooler. The high performance tube spec, along with the high efficiency multi louvered fin design allows for maximum surface area contact and an approximate 40% increase in heat rejection. The High Performance Race Spec Oil Cooler directly replaces the factory
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Your CSF 11-16 BMW 135i(X) 5 Door F20 / M135i(X) 3 Door F21 Race-Spec Oil Cooler orders ship within 1-2 business days.
Delivery Options:
- 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.
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4.1 ★★★★★
Based on 1304 reviews
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Product Reviews
★★★★★ 1
My last Timex and why.
Color: Black/Gray/Digital, Color: Black/Gray/Digital
New edit. Upon further reflection, I’ve only had, a couple of exploratory years with Swatch excepted, Timex watches.
My first one was when my mother replaced the Chicita Banana “tickity tock” sticker with a real Timex wind up watch before my first Cub Scout camp.
In addition to many other Timex products, I’ve had these Ironman watches for the past 25+years. Usually the band wears out and can’t be replaced after three or four years. This particular watch fell apart less than six weeks old. It wasn’t hit by impact. It just came apart while I was driving down the road. I wonder if they’ve changed their manufacturing process. See photo for details. What is truly infuriating is that rather than replacing it, because it is truly a warranty issue, the told me to ship it to their offshore repair facility (which could take 3-5 months) and pay what might be half the value of the watch. Things happen, but the intentional friction they have created to avoid their obligations borders on malpractice and speaks to their indifference toward customer experience and subsequent lifetime value.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 4, 2025
★★★★★ 5
Good watch
Color: Black/Black/Digital
Bought for my 8 yo, durable
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Reviewed in the United States on October 19, 2025
★★★★★ 5
As expected
Color: Gray/Gray/Digital
Just an old school digital timex. Tried and true. Has both 12hr and 24hr function on the time setting. Has a standard stop watch and timer. The battery is great, just as it always is on a timex. Good water resistance and very easy to use. Overall very good watch for the price!
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Reviewed in the United States on July 6, 2025
★★★★★ 2
Can’t read numbers
Color: Gray/Gray/Digital
Numbers are too small to tread on a 44mm watch
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Reviewed in the United States on May 5, 2026
★★★★★ 5
Love the Timex Ironman Shock watches!!
Color: Black/Black/Digital
I really like the Timex Ironman Shock watches. They are very durable and reliable. Simple to use and modeled after the. Original Ironman watches of the late 80s and 90s.
Buttons are clearly marked and easy to press.
They used to make many colors of this Shock model of the watch inc a cool shiny red color my wife still has .
I have been a runner many many years and at 65, am still out although a lot slower than my 20s. But Timex Ironman watches have. Been my constant companion on the roads and track for 35 years now.
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Reviewed in the United States on March 27, 2026