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  See more parts for BMW 230i
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CSF Radiators BMW F3X/F2X B58/B48 Triple-Pass Heat Exchanger, 2012-2021, Polished Silver - 8131
CSF Radiators BMW F3X/F2X B58/B48 Triple-Pass Heat Exchanger, 2012-2021, Polished Silver - 8131 - Image 4 CSF Radiators BMW F3X/F2X B58/B48 Triple-Pass Heat Exchanger, 2012-2021, Polished Silver - 8131 - Image 2 CSF Radiators BMW F3X/F2X B58/B48 Triple-Pass Heat Exchanger, 2012-2021, Polished Silver - 8131 - Image 3 CSF Radiators BMW F3X/F2X B58/B48 Triple-Pass Heat Exchanger, 2012-2021, Polished Silver - 8131 - Image 4
If you’re running a BMW with the B58 engine, you probably know how crucial it is to keep things cool, especially when you start pushing the limits with tuning or upgraded turbos. That’s where the CSF high-performance heat exchanger comes into play. This isn’t just some run-of-the-mill replacement; it’s designed for serious enthusiasts who want to maximize performance without worrying about overheating or hitting limp mode. Let’s break it down. The stock OEM heat exchanger is a 1-row unit, just 27mm thick. CSF took it up a notch with their 68mm 2-row core, which is the largest of its kind in the industry. Thanks to their B-Tube technology, you’re getting a serious upgrade in cooling capacity without a complete overhaul of your cooling system. It fits right into the OEM housing, so no need for extensive modifications—just a straightforward drop-in installation. One of the standout features here is the triple-pass flow design. This means that the coolant flows through the heat exchanger three times before heading back to the manifold charge cooler. The result? Lower outlet water temperatures, which translates to reduced intake air temperatures (IAT). It’s all about keeping your engine happy and performing at its best, especially during those spirited drives. The CSF #8131 comes in a polished finish that really shines, but if you prefer a more understated look, check out the satin black version (CSF #8131B). Plus, it includes a detachable rock guard to protect that shiny new piece from road debris. Here are some specs to chew on:
  • Core Size: 524mm Length x 478mm Height x 69mm Wide
  • Replaces OEM Part Number: 17118741830
  • Core Thickness: 68mm 2-Row Core
  • Fin Height: 6.5mm Multi-Louvered
  • Installation: Direct plug-and-play, no modifications needed
  • Included: CNC machined mounting location pins and brackets
  • Material: Aluminum
  • Finish: Polished
This heat exchanger fits a range of models, including:
  • BMW 125i (2012-2014)
  • BMW 220i (2014-2018)
  • BMW 230i (2017-2021)
  • BMW 320i (2012-2019 & 2021)
  • BMW 330e (2016-2018)
  • BMW 330i (2016-2019)
  • BMW 340i (2016-2019)
  • BMW 430i (2017-2020)
  • BMW 440i (2017-2020)
  • BMW M240i (2017-2021)
So, if you’re serious about keeping your B58 engine running cool and performing at its peak, this CSF heat exchanger is worth considering. It’s built for the enthusiast who knows that every degree counts.

Other Part Numbers:
CSF Radiators #csf8131

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle
2017-2021
 BMW 230i
2016-2018
 BMW 330e
2017-2019
 BMW 330i
2016-2019
 BMW 340i
2017-2020
 BMW 430i
2017-2020
 BMW 440i
2017-2021
 BMW M240i
CSF Radiator

Anyone who needs a new radiator should consider buying a CSF radiator. A CSF radiator and CSF cooling system offers the best performance for driving and racing enthusiasts. If you have a faulty radiator or are looking to upgrade to a high-performance radiator, a CSF radiator will get the job done. 

What is a CSF Radiator?

During the last 40 years, CSF has manufactured over 10,000 different models of radiators, oil coolers, heat exchangers and condensers for Automotive, Truck, Industrial and Marine applications. Today, their products are sold in over 60 countries throughout the world. Their US Aftermarket Division stocks over 1000 models that cover over 2100 applications for all popular Import vehicles.

CSF supplies radiators and condensers that are designed to meet or exceed original equipment (OE) engineering specifications. Their plants meet ISO 9000 standards and provide parts to OE manufacturers, and to top it all off - check out their industry leading warranty. Simply put, you cannot buy, sell, install or own a better value radiator or condenser.

Why Should I Buy a CSF Radiator? 

A CSF radiator offers a number of benefits over the competition. Below, we explain the main reasons why you should buy a CSF radiator.

A Market Leader for over 45 Years

CSF has been a market leader for over 45 years, as the company was initially established in 1975 and have been selling CSF radiators ever since. Over time, a CSF radiator has become known for its innovative design and impeccable quality.

High-Quality Radiator Testing

Every single CSF radiator and CSF cooling system has been put through a rigorous series of tests to make sure every system is reliable and performs at a high level. In their testing lab, CSF puts in the time to make sure every product works perfectly. 

Cutting-Edge Technology

Each CSF radiator uses cutting-edge technology to bring customers the best CSF full cooling system possible. CSF racing radiators combine a high-efficiency core, advanced endtank designs, and innovative design and engineering to give our customers the most advanced and efficient radiator possible.  

Get a CSF Radiator or CSF Cooling System From Vivid Racing 

Vivid Racing carries a wide selection of CSF radiator products, including CSF cooling systems and other accessories. If you are interested in learning more or would like to purchase a CSF radiator, please contact Vivid Racing today by calling (480) 966-3040.

CSF takes pride in the quality of its products and offers one of the best warranty’s in the industry. Please refer to the CSF warranty card in the shipping carton for details.

CSF warranty is applicable only to the original owner of the vehicle. Original paper work verifying the proof of purchase and pre-installation cooling system checklist signed by the professional installer is required to process warranty claims.

All warranty claims should be directed to the point of purchase. Due to CSF’s established agreements with Authorized CSF Warehouse Distributors, CSF is unable to handle and/or process warranty related calls/inquires from any individuals – all inquires/warranty related claims should be directed to the point of purchase or an authorized warehouse distributor.

Take care of your radiator, as under circumstances listed below the warranty will be void.

If the radiator is installed and is returned deformed (bulging tanks, warped core etc.), this is an indication that the radiator is the victim of some other problem and not the cause. The deformation is a result of the radiator being subjected to extremely high pressure and or temperature caused by any of the following reasons:Defective Pressure Cap, Defective Head Gasket, Defective Temperature gauge (incorrect readings), Defective Water Pump etc. Such units are not covered under the warranty.

If a radiator seems to have a “fit problem” there is the possibility that there is some confusion about a multi-fit radiator that might look different. Your nearest CSF WD can clarify the application, just give them a call. A perceived fit problem is not covered under warranty.

If a unit is damaged in shipping, please file a claim with the carrier. Damages caused during shipping, installation or handling are not covered under warranty.

Any repairs or alterations to the unit will automatically void the warranty.

Any form of abuse, including the use of improper coolant mixtures, damage caused by steam, corrosion etc and use on commercial vehicles voids the warranty. It is the vehicle owners’ responsibility to maintain the cooling system as specified in the owners manual.

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