Name: CSF High Performance All-Aluminum Radiator for F-Chassis BMW B48B20 / B58B30M0 Engines [7089]
Brand: CSF
SKU: 7089
Price: 649.00 USD
Availability: InStock

Description

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Shipping policy

BP PRICING DIFFERENCE

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Description

CSF High Performance All-Aluminum Radiator for F-Chassis BMW B48B20 / B58B30M0 Engines [7089]

CSF recognizes that as Gen 1 B58-powered BMWs in the F3x and F2x platforms accumulate mileage and become more accessible, they have become popular choices among tuners, track-day enthusiasts, and weekend warriors. With aging factory components and an increasing number of modified vehicles, demand for motorsport-grade performance parts has grown substantially. To meet the needs of those pushing the limits of the Gen 1 B58, CSF prioritizes advanced cooling solutions. As the industry leader in high-performance BMW cooling, CSF provides F3x and F2x owners with more than just OEM-level reliability. Whether the goal is to build a competitive track car or reinforce a daily driver, the CSF High-Performance Radiator offers unmatched durability and thermal performance for the Gen 1 B58 platform.

Design & Engineering

CSF has earned a strong reputation for developing the most effective B58 cooling systems available. Drawing on years of industry experience and valuable feedback from customers, race teams, and development partners, CSF continues to lead the way in Gen 1 B58 cooling innovation.
CSF has observed that as enthusiasts continue to elevate the performance of F-Chassis BMWs, the limitations of the factory radiator have become increasingly apparent. Elevated boost levels and turbocharger upgrades generate excess heat that the OEM cooling system often cannot manage. Combined with the front-mounted heat exchanger, these factors can cause elevated coolant temperatures — especially during track use — potentially triggering limp mode.
CSF also notes the long-term reliability concerns associated with OEM plastic radiators. Over time, these components are prone to issues such as clogged tubes, damaged fins, and a higher likelihood of tank cracking or gasket failure. As a result, upgrading the factory radiator is essential for maintaining performance and durability.

5mm Core Upgrade

While the initial 6.5mm fin version of the radiator performed exceptionally well in testing, CSF opted to push the design further. Prior to final production, the radiator was updated with CSF’s latest 5mm fin technology—introduced in late 2023. This revised core configuration delivers greater heat transfer and thermal efficiency than the original prototypes. CSF is confident that this radiator is capable of meeting the extreme demands of motorsport use.

CSF vs OEM

CSF acknowledges that the original OE radiator from BMW, while generally reliable, utilizes a plastic tank and single-row aluminum core. Although the 4.5mm fin design provided adequate efficiency for a factory part, the system’s limitations are most evident in the 34mm thick, single-row core — restricting overall cooling performance.
CSF addresses these shortcomings by incorporating its newest 5mm fin technology in the upgraded radiator. These fins expand the heat exchange surface area, increasing cooling efficiency and improving recovery while preserving airflow. The radiator features a significantly larger 2-row, 42mm aluminum core that not only increases coolant capacity but also enhances heat dissipation. CSF’s exclusive B-Tube Technology improves heat transfer by approximately 15% compared to standard oval welded tubes, and the multi-louvered fins maximize airflow for peak thermal performance.
CSF manufactures the radiator with TIG-welded, 100% all-aluminum construction, boosting structural integrity and longevity. This robust design ensures reliable performance under aggressive driving conditions. Installation is seamless, as the CSF radiator fits directly into the factory location without requiring modifications or cutting.

Features

20–25% increase in heat transfer efficiency using CSF’s exclusive 5mm fin technology
Improved cooling performance to support high-boost, big-turbo builds
All-aluminum construction for superior durability over OEM plastic tanks
Designed to work seamlessly with factory or aftermarket heat exchangers
Whether you’re building a street sleeper or prepping for your next track day, CSF’s Gen 1 B58 Radiator is engineered to handle the heat and then some.
2-row – 42mm ultra high-performance core
Cooling tubes with CSF’s exclusive B-Tube Technology
New 5mm tall ultra efficient fins with a multi-louvered design for maximum surface area contact
CNC-machined mounting brackets & OEM style inlet / outlet
100% all aluminum TIG-welded construction
Hand brushed satin finish
True plug-and-play “drop-in fit”, installation requires absolutely no modifications
Individually leak & pressure tested
2-year limited warranty

Applications

BMW 230i (with M Sport package): F22, F23 (2016-2021) [2.0L I4 turbo B48B20]
BMW 330i (with M Sport package): F30, F31, F34, F35 (2015-2019) [2.0L I4 turbo B48B20]
BMW 340i: F30, F31, F34, F35 (2015-2019) [3.0L I6 turbo B58B30M0]
BMW 430i (with M Sport package): F32, F33, F36 (2016-2019) [2.0L I4 turbo B48B20]
BMW 440i: F32, F33, F36 (2016-2019) [3.0L I6 turbo B58B30M0]
BMW M140i: F20, F21 (2016-2019) [3.0L I6 turbo B58B30M0]
BMW M240i: F22, F23 (2016-2021) [3.0L I6 turbo B58B30M0]

Notes

Compatible with xDrive models

About CSF

The Racing & High Performance Division of CSF Inc. is dedicated to designing and producing the world’s most advanced, efficient, and dependable cooling solutions. CSF offers a broad range of state-of-the-art cooling systems, with over 250 distinct applications. These include high-performance all-aluminum direct-fit radiators, intercoolers, and oil coolers, as well as bespoke manufacturing tailored for racecars, power sports, off-road vehicles, marine, and industrial applications. Every cooling solution from CSF is meticulously crafted to ensure optimal engine temperature management, even in the most rigorous driving scenarios. With a legacy spanning over 50 years and more than 40 million cooling units distributed worldwide, CSF is widely regarded as a luminary in the industry.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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CSF High Performance All-Aluminum Radiator for F-Chassis BMW B48B20 / B58B30M0 Engines [7089]

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CSF High Performance All-Aluminum Radiator for F-Chassis BMW B48B20 / B58B30M0 Engines [7089]

Design & Engineering

5mm Core Upgrade

CSF vs OEM

Features

Applications

Notes

About CSF

Reviews