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Description
Dinan High Performance Heat Exchanger - BMW / F2X / F3X / 230i / M240i / 330i / M340i and moreThe 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!
ENDURANCE TESTING
Charge Air Temp Reduction, or Intercooler Temperature drop (Intercooler dT), is a measurement of the temperature drop across the intercooler (inlet temperature - outlet temperature). For this testing and data presentation, the measurement was taken at the end of each pull (~100mph WOT). The end of the pull was chosen as it generally represents the highest load on the charge cooling system. The charge cooling system has two parts, the intercooler and heat exchanger. The data shows that by implementing the Dinan heat exchanger, with the OEM intercooler, the charge cooling system pulls more heat from the intake air (lower IAT's) and performance decays slower (longer time on track before cooldown required).
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
4.4 ★★★★★
Based on 459 reviews
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Product Reviews
★★★★★ 1
Do not buy Epson if you expect it to last.
Style: WF-3820 (Renewed)
I had previously had HP printers and they worked extremely well, honestly I had them for years and years at a time, much longer than would probably be typical for an at-home printer that gets a lot of use. I bought an Epson replacement as the price was right. I replaced the ink once in it, and it worked fine...then it would never read new ink. Well, it would read it was full, but it would print extremely light and if you had a barcode (like to return an Amazon package) the barcode would not print correctly to be able to use for shipment. So, I thought I must have just gotten a bad printer and that it was a year old so I guess it was due...so I bought this one. I have had it since May and just replaced the black in - and it is now doing the SAME thing as the previous Epson. It will not print correctly. I called Espon support and was told they could send me a new one BUT I had to give a CC# for them to 'hold' and it would not be charged if I returned the item. Well, then once it got down to it, she then stated that when the new one was sent back, they would 'review to make sure it is covered under warranty' and that it is 'their property' then, and if it is not under warranty, I would be charged...which was TWICE what I paid for the printer originally. So I told her nevermind. She could not understand why, which they state some arbitrary statement that 'if' it is found to be 'under warranty' then I would not be charged, but also specifying once returned it is their property. So, basically that sounded too 'iffy' to me and I am not going to return something to MAYBE not get charged DOUBLE what I paid for the item to begin with. That seems like a scam to get paid for the replacement item to be honest.
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Reviewed in the United States on September 11, 2023
★★★★★ 5
Prints perfectly
Style: WF-3820 (Renewed)
Fast and clear printing
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Reviewed in the United States on March 17, 2024
★★★★★ 5
Fast easy set up and comes with ink
Style: WF-3820 (Renewed)
Fast easy set up and comes with ink. A larger touch screen would help.
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Reviewed in the United States on March 10, 2024
★★★★★ 2
Bad worst experience.
Style: WF-3820 (Renewed)
Unfortunately I couldn't enjoy this all in one printer. I'm sure that it is a well-made printing machine. I had to return my printer the next day since it didn't came with the proper ink cartridges the proper instruction manual or the CD to set the computer up. I did manage to purchase new ink cartridges for this Epson printer unfortunately when I went through the setup process and install the ink cartridge the printer kept jamming on me. I don't know if the reason that I was having difficult with this printer it's because it was a refurbished printer. Try to resolve issue with printer over the phone with Amazon but that was a disappointment.
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Reviewed in the United States on February 4, 2025
★★★★★ 5
Trustworthy
This protection plan is honest and true. I never purchase any electronics without it, not because I don't trust the product, but because anything can happen and ASURION has always come through when I needed them.
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Reviewed in the United States on May 8, 2026