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- USA
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Ships within 48 hours · Estimated delivery Jul 12 - Jul 17
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Description
Fits 2016-2021 Bmw 230I/M240I High Performance Heat Exchanger-D780-0002The factory B4x B58 heat exchanger is not built to cater to the rigorous demands often associated with a modified build. The thin core is easily overwhelmed with IAT's rising dramatically once pushed beyond a few successive WOT pulls or even a few minutes at the track. This elevation in temperature gives way to the factory ECU fail safes pulling timing and reducing overall power in order to keep the system from overheating to the point of permanent
The factory B4x/B58 heat exchanger is not built to cater to the rigorous demands often associated with a modified build. The thin core is easily overwhelmed with IAT's rising dramatically once pushed beyond a few successive WOT pulls or even a few minutes at the track. This elevation in temperature gives way to the factory ECU fail safes pulling timing and reducing overall power in order to keep the system from overheating to the point of permanent damage. On an application where enjoyment is directly attributed to pushing the platform to its limits this constraint to cooling presents a challenge for the automotive enthusiast. The Dinan B4x/B58 heat exchanger for the F2x/F3x chassis assists in mitigating these issues with a more robust core (48mm thick Dinan core vs. 27mm thick OEM core) that wields 78% more heat transfer surface area for improved cooling capacity. The significant increase in core thickness requires unique "L" shaped end tanks to be incorporated as well, which also contributes to the overall thermal mass (ability to absorb, store, and release heat) improvement beyond the OEM setup. With up to a 15° IAT delta recorded over stock the Dinan heat exchanger is ready, and able, to assist in extending your vehicles ability to deliver maximum performance time and time again for your driving enjoyment!
Features:
- Average of 8° reduction in IAT's with a maximum reduction of 15° over 15 successive WOT pulls
- Reduces the tendency to heat soak / go in to limp mode
- 48mm thick Dinan cooler vs. 27mm thick stock cooler
- 78% more cooling surface area and volume than stock
- 100% TIG welded and pressure tested
- Installation hardware included (inclusive of xDrive specific transmission oil cooler brackets)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 1533 reviews
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Product Reviews
★★★★★ 5
Get these! You won't regret it!
These are my go-to winter shoes! They are waterproof- I love them bc they don't look like your typical "rainboots"! Stylish- I get compliments everytime I wear them! Comfortable- first time I wore them they were tight through the middle of my foot, but after two wears I had them nice and broke in, now my most comfortable shoes!
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Reviewed in the United States on February 17, 2021
★★★★★ 3
So nice but not a good fit on my foot
I love these boots so much, they’re exactly what I wanted. Unfortunately, they are too big in the heel and flop, while too tight in the toe. I know the toe would stretch with wear, but can’t deal with a floppy heel, they pulled my socks down off my feet. I do have narrow feet. Too bad, I’m so disappointed! They seem well made and would go with everything. Comfortable, too, if they fit right.
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Reviewed in the United States on October 31, 2018
★★★★★ 5
Extremely comfy!!!
I’m from Alaska and these boots are amazing!! I’m ordering a second pair. Cute for the office, but also 100% keep your feet warm from Snow or water.
These are so Comfy
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Reviewed in the United States on April 3, 2021
★★★★★ 5
Best boots I have ever purchased
I do appraisal work so I was looking for something cute/professional yet durable and rugged for when I work outside in all types of weather. Found it! So comfortable, so cute, and waterproof. I wear them most days for both office work and inspection work. I range between 8.5-9 and I got a 9 and they fit great both with thin socks or thick socks. I very highly recommend.
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Reviewed in the United States on October 7, 2020
★★★★★ 5
Perfect for travel... very comfortable!
These things are amazing! I bought these a couple weeks before a trip to Italy and had planned on doing a lot of walking in them. I only got to wear them a couple times before we went on our trip, but no blisters, even during LOTS of walking in them on the trip! They wore in super quickly while still keeping their durability. My feet stay dry even in lots of rain. The photos show the wear on them after a few months, including a couple weeks of travel, and weeks of wear around town.
My only complaint is that there is a tiny something (a little knot of thread with glue? not sure...) that is at the top of the opening of the boot, and it rubs the back of my ankle and makes a sore. That isn't enough to make me not wear them though. There's a photo that shows this. As you can see it's super tiny, and probably not even a flaw, it just hits my ankle *just* right so that it rubs.
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Reviewed in the United States on August 10, 2018