BMW Radiators for BMW 4 Series F33 (2014+)

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We sell only OE supplier or approved aftermarket upgrade radiators for your BMW. It seems BMW took some shortcuts when it came to radiator design and used weak materials like plastic for critical connection points. If you are tracking older models like E30, E36, or E46, you probably are well aware of these issues. As these cars age, the plastic pieces become more brittle and failure prone. The solution is to replace with upgraded radiators that perform as upgrades for the original, failure prone radiator to avoid being left on the side of the road or, worse yet, the track.

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Dinan High-Performance Heat Exchanger - F22/23 F3X B46/48 B58 ...

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T#:21045539

Part#: D780-0002

In Stock

11% off MSRP $ 658.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 584.99 USD

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11% off MSRP

$ 658.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 584.99 USD

Add to Wish List

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) NOTE: Due to the enlarged core and unique "L" shaped endtanks minor modification to the plastic core stack shroud may be required with some factory configurations ( particularly those with the optional OEM hot climate heat exchanger). Consult the installation PDF for full documentation on what exactly that entails. (https://documents.dinancars.com/d780-0002.pdf)

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CTS Turbo B58 Radiator

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:23053175

Part#: CTS-B58-HX

Ships in 8 Business Days

Sale - Save 15% $ 499.99

This product was last offered at the strikethrough price on
07-09-2026

$ 424.99 USD

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Qty

Sale - Save 15%

$ 499.99

This product was last offered at the strikethrough price on
07-09-2026

$ 424.99 USD

Add to Wish List

Enhance cooling performance for tuned B58 engines in your BMW with CTS Turbo's Front Mount Heat Exchanger. This aftermarket heat exchanger offers superior efficiency compared to the factory front-mounted one, addressing cooling inefficiencies.

Key Features:

Double-pass core designed for higher flow and increased size than the factory unit, fitting into the stock location
CNC machined mounting points and hose connections ensure seamless installation without modifying factory parts
Includes a vent for easy air bleeding post-installation
High-efficiency aluminum core with smooth bends on coolant connections
Hand-welded and pressure tested for reliability
Reduces intake air temperature, optimizing engine performance
Installation hardware, including transmission cooler relocation brackets, is included

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BMW Radiators for BMW 4 Series F33 (2014+)

Dinan High-Performance Heat Exchanger - F22/23 F3X B46/48 B58 ...

CTS Turbo B58 Radiator

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