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CSF  |  SKU: CSF8131

CSF BMW B58/B48 Front Mount Triple-Pass Heat Exchanger w/Rock Guard

$1,014.77 $1,092.95
Shipping calculated at checkout.

Description
The original OEM B58 heat exchanger is a 1-row unit that is 27mm thick. In comparison, CSF has used its industry-exclusive world's largest 2-row core (68mm) with CSF's B-Tube technology. A unique tank design allows the larger CSF core to still fit into the OEM cooling system housing. Another critical feature of the CSF BMW B58 high-performance heat exchanger is its unique triple-pass flow design. The water traveling through the upgraded heat exchanger flows through the radiator three times before exiting the cooler and flowing back into the manifold charge cooler. This ensures that the outlet water temperature of the heat exchanger is the absolute lowest it can be. The OEM design, as well as more expensive aftermarket designs, all have single-pass flow structures.

This Part Fits:

Year Make Model Submodel
2017-2021 BMW 230i Base
2017-2021 BMW 230i xDrive Base
2016,2018 BMW 330e Base
2017 BMW 330e iPerformance
2017-2018 BMW 330i Base
2017-2018 BMW 330i GT xDrive Base
2017-2019 BMW 330i xDrive Base
2016-2018 BMW 340i Base
2017-2019 BMW 340i GT xDrive Base
2016-2018 BMW 340i xDrive Base
2017-2020 BMW 430i Base
2017-2020 BMW 430i xDrive Base
2017-2020 BMW 430i xDrive Gran Coupe Base
2017-2020 BMW 440i Base
2017-2020 BMW 440i Gran Coupe Base
2017-2020 BMW 440i xDrive Base
2017-2020 BMW 440i xDrive Gran Coupe Base
2017-2021 BMW M240i Base
2017-2021 BMW M240i xDrive Base

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About K2 Industries

We're a team of passionate car enthusiasts located in South Florida. We are dedicated to assisting you in making your dream build a reality!

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Customer Reviews

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Let customers speak for us

from 199 reviews
Well worth it.

Just bought these clears for my mk7 and love them already. took under a hour to install and i feel like it was a much needed addition for my car. only thing i will say is if you buy them be aware that you have to take your reverse bulb out of your stock tail lights and put them into these (takes 30 seconds to get them out and put them in these new ones) follow my ig: dstagetwo ;)

Dawson Issac
VW MK7 Golf GTI Chrome/Clear LED Tail Lights (2012 - 2017)
Rear lights bmw e90

Absolutely incredible variants of modifications for lights, gadgets etc for all car specs!

Wolfy01
BMW 3 Series E90 Sedan Red / Chrome / Black LED Tail Lights (2005 - 2008)
Completely changed the look!

I love these headlights, I wouldn’t hesitate to buy them again if I got another truck my body style. Best looking headlights I’ve seen that they make for this truck.

Coltan Vice
Spec-D Full LED Headlights Chevy Silverado 1500 (2019-2021) Sequential LED Black Housing w/ Clear or Smoked Lens
Great purchase

Shopped on time, easy install, looks great! Would highly recommend!

Brittney Burriss
BMW 3 Series G20 DRL Module (2019+)

VW Golf 6th Gen Mk6 Hatchback LED Tail Lights (2008 - 2014)

Layne Coy
VW Golf 6th Gen Mk6 Hatchback LED Tail Lights (2008 - 2014)
Great little side marker!

GreEasy to install on my E46 M3 and it looks more modern with the LED lighting. Yes, the light does stay on for a minute (or two) after I un/lock it but it actually looks pretty cool. Definitely an easy modification to update your car's look.

Beemer Boii
BMW E38 7-Series E46 M3 Crystal Light Bar Clear/Smoke Lens Amber/White LED Side Marker Light (1995-2006)

If you buy these you have to program them to your car I have 06 325i

Steven Morales-Gonzalez
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Loved the product, great quality

Neville Mitchell
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Jay Morey
BMW E36 Sedan Custom Clear Tail Lights V3 (1992-1999)
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Glad that K2 offer this product. One of many carbon fiber parts that I want to add to my G80.

Joe Kelley
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A complete fresh look for my F20 with this blue DRL. I'm happy with the result with this upgrade!

Marion Khun
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Nice Upgrade

Fits like a glove! A sudtle race-inspired look for my G82.

Brandon Edwards
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Amazing Taillights

I absolutely love the product, they fit perfectly as if they are oem. I love the attention to detail

Sakir Hall
BMW 3 Series E90 Upgraded LED Tail Lights (2009 - 2011)
Beautiful Spoiler

The carbon fiber look is flawless! Had it installed for a week now and so far it's sturdy during high speeds. Worth the money, worth the wait!

Matthew Medina
BMW 2 Series G42 MP Style Carbon Fiber Spoiler (2022+)
Premium Interior Touch

This carbon fiber HUD cover added a high-end, sporty feel to my X4 M’s interior. The fit is precise, and the carbon fiber finish looks stunning. Small upgrade, big impact!

Vernon Mitchell
Toyota Supra Mk5 DRL Module (2019+)

Frequently Asked Questions

Why Buy from K2 Industries

What makes K2 Industries more than just a parts supplier?

We’re a team of USA-based car enthusiasts committed to helping you get your build right the first time. With our deep product knowledge and close relationships with trusted manufacturers, we ensure you receive high-quality parts that perform. We’re here to support you before, during, and after your purchase, providing personalized advice, part compatibility checks, and responsive customer service. When you buy from us, you’re joining a community that cares as much about your car as you do.

How do I know which parts are best for my car and goals?

Answer: Our team can provide personalized mod plans to match your performance and style goals. Whether you’re building for speed, aesthetics, or both, we’ll help you select the right parts for your vision. Contact us to discuss your project!

Do You Have Financing Options?

Answer: Yes, we offer flexible financing options to make it easier for you to upgrade your vehicle without paying the full amount upfront. Choose our financing option at checkout to split your purchase into manageable payments, so you can start your build now and pay over time.

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Shipping

Do you ship overseas?

Yes, we ship all over the world. Shipping costs will apply, and will be added at checkout. We run discounts and promotions all year, so stay tuned for exclusive deals.

How long will it take to receive my order?

It depends on where you are. Orders processed here will take 5-7 business days to arrive. Overseas deliveries can take anywhere from 7-16 days. Delivery details will be provided in your confirmation email.

Other

Any question?

You can contact us through our contact page! We will be happy to assist you.