


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
Quick Dispatch:
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
Order Tracking:
You'll receive a tracking link by email once your CSF 11-16 BMW 135i(X) 5 Door F20 / M135i(X) 3 Door F21 Race-Spec Oil Cooler ships.
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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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4.8 ★★★★★
Based on 713 reviews
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Product Reviews
★★★★★ 4
Sizing is off, send me free pair!
Size: 3-4 Years Toddler, Color: Navy, Size: 3-4 Years Toddler, Color: Navy
Sizing is off. I’m very frustrated. I ordered it to Costa Rica thru shipping company in Miami, which takes about 3 weeks to deliver and + shipping fee that they apply (20$)
I spent time and checked the size guide. According to the size guide, I ordered “3-4 years old” which supposed to be 16cm from heel to toe) the pair I ordered ended up being 17cm!
My baby’s feet are 15cm, I was planning to get 16cm for him to grow into it, but 17cm is too big. The shoes it self looks good, the leather is very soft and nice. I’m not sure how durable they are. Ordering first time from this brand. I ordered 2 pairs of shoes from a similar brand and liked it. They just didn’t have the size I needed. Although, the leather the previous brand uses for shoes seems much thicker. Again, I don’t know how durable “Dooty Fish” but I like how soft on skin they are.
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Reviewed in the United States on August 21, 2024
★★★★★ 5
Wide and flexible
Size: 18-24 Months Toddler, Color: White
Very cute I love the width and flexibility of the shoe 18 to 24 month is a bit too big for my 18 month old and she generally wears a size 6 1/2 shoe. I’m going to try the smaller size.
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Reviewed in the United States on July 15, 2025
★★★★★ 1
Don’t buy
Size: 12-18 Months Infant, Color: Navy
Cute little shoes but I would not recommend people buy these. The elastic broke on both shoes within a month. And they cannot get even a tiny bit of water on them. (Which is impossible with a toddler) If they do get wet the bottoms become dangerously slick. I wanted to get nice little barefoot shoes that I could use as hand-me-downs for future kiddos but these were not it. Horrible quality and not worth the money.
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Reviewed in the United States on August 23, 2025
★★★★★ 3
Quality control?
Size: 6-12 Months Infant, Color: Navy, Size: 6-12 Months Infant, Color: Navy
These were true to color (in blue) and are a cute design, however we received a pair that was oddly mismatched size-wise. They were both 6-12mo, however one moccasin was visibly larger and wider than the other. They were both too big for my 7mo old, but even when he'd grow into one the other would be much too large so we returned. Too bad because these would have been perfect if the quality control was there.
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Reviewed in the United States on July 13, 2025
★★★★★ 5
Great first sandals
Special Size Type: Toddler (1-4 Years), Size: 18-24 Months Toddler, Color: Matthew Navy
Great quality, they are super cute and fit my toddler well.
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Reviewed in the United States on July 3, 2025