SKU: 85725849918

CSF All-Aluminium Triple-Pass Radiator - E46 M3

Sale price$742.50 Regular price$825.00
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Description

CSF All-Aluminium Triple-Pass Radiator - E46 M3The Racing & High Performance Division of CSF Inc. strives to build and engineer the most advanced, efficient, and reliable cooling systems in the world. CSF manufacturers a wide variety of sophisticated cooling systems with more than 250 different applications, ranging from high performance all aluminum direct fit radiators, intercoolers, and oil coolers, to complete custom manufacturing for racecars, power sports, off road, marine, and industrial

The Racing & High Performance Division of CSF Inc. strives to build and engineer the most advanced, efficient, and reliable cooling systems in the world. CSF manufacturers a wide variety of sophisticated cooling systems with more than 250 different applications, ranging from high performance all-aluminum direct-fit radiators, intercoolers, and oil coolers, to complete custom manufacturing for racecars, power sports, off-road, marine, and industrial use. All CSF cooling systems are designed and engineered to maintain optimal engine temperatures, even under the most extreme driving conditions.

With over 50 years of experience and over 40 million cooling systems sold globally, CSF has earned the industry reputation of being “THE COOLING EXPERTS”.

  • Over 50 Years in Business
  • ISO 9001 Certified – True Manufacturer
  • Over 150,000 Radiators and Condensers in Stock over North America
  • Over 650,000 Units Sold Annually, with Manufacturing and Warehousing Capacity for 1 Million Units

CSF prides itself on using the most advanced technologies, machines, and experienced personnel to design, develop, and manufacture the world’s best cooling systems. With three privately owned manufacturing facilities, and a global cooling network formed over the past 75 years, CSF houses the industry’s best machines and brightest minds. Our engineering staff designs many of the machines in-house, giving CSF the innovative edge when introducing new technologies to the industry.

PRODUCT INFORMATION

THE ULTIMATE COOLING SOLUTION FOR THE E46 M3


The CSF All-Aluminium Triple-Pass Radiator is the ultimate cooling solution for race and high-performance S54 powered E46 M3, including those with high cooling demands found in forced induction and high-power naturally aspirated engines.

This high-efficiency, all-aluminium radiator features an industry-leading core design with CSF's exclusive B-Tube technology along with an ultra-efficient 6.5mm multi-louvered fin height design. 

To further the cooling efficiency, the integrated three-pass flow system guarantees the lowest possible outlet temperatures of any upgraded cooling system available for the platform today. Lab tested using CSF's in-house wind tunnel showed heat rejection results approximately 20% more efficient than the OEM unit - enough to keep coolant temperatures fully stabilized during the most demanding driving and high-ambient-temperature conditions.

Direct replacement for BMW part number 17102228941.

FEATURES

  • Two-row 42mm core (dual core) featuring CSF's exclusive B-tube technology.
  • Core features an ultra-efficient fin with 6.5mm fin height and multi-louvered design for maximum surface area contact.
  • Triple-pass flow structure allows the coolant to flow across the core of the radiator three times before exiting, creating the lowest outlet temperatures possible.
  • CNC-machined "quick-connect" inlet/outlet connections.
  • CNC-machined brackets and fittings for superb fit and durability.
  • All-aluminium drain plug.
  • Hand-polished mirror finish.
  • Drop-in fitment, requiring no modifications to install. Accepts all standard attached OEM components including "quick-connect" hoses, AC condenser, mounting brackets, and fan shroud.


Models
  • 3 Series / E46 (1998-2006) / M3
  • 3 Series / E46 (1998-2006) / M3 CSL
            Shipping Notes
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            Exchange/Return Notes
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            • Final sale items are not eligible for returns or exchanges.
            • To process your return/exchange, please contact us at [email protected]
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            SKU: 85725849918

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            BB
            Cuba, US
            ★★★★★ 3
            Works but will Dry Out Your Skin
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            I am a swim instructor at an outdoor pool and this stuff DOES work. I can apply it at the beginning of a 5 hour shift and while I have experienced light tanning it has protected against burning completely without reapplication. The white cast is significant though I don't mind it aesthetically, I know its there for protection . It does rub off on things though so consider yourself warned. Major Con: it is incredibly drying, and the soap needed to scrub it off is A LOT. That coupled with chlorine is a lot for my skin . Still on my sunscreen journey.
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            Reviewed in the United States on May 4, 2026
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            Jay83
            Birmingham, US
            ★★★★★ 5
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            Style: SPF 70, Size: 6.5 Ounce (Pack of 1)
            The Neutrogena Beach Defense Sunscreen Spray SPF 50 has quickly become my favorite sunscreen for beach days, my Florida hot runs, and everyday outdoor activities. It offers everything I need in a sun protection product and more. Why I Love It: Excellent Protection: The SPF 50 broad-spectrum coverage does a fantastic job shielding my skin from both UVA and UVB rays. I’ve used it for hours on my runs, at the beach and never burned. Water & Sweat Resistant: I love that it stays on even after swimming or sweating. It’s labeled as water-resistant for up to 80 minutes, and it lives up to the claim. Quick & Easy Application: The spray format is super convenient. It applies evenly, dries fast, and doesn’t leave my skin feeling sticky or greasy. Great Scent: It has a light, fresh scent that smells like summer without being overwhelming. Gentle on Skin: I have sensitive skin, and this sunscreen never causes any irritation or breakouts like others have in the past. This sunscreen checks all the boxes; strong protection, easy to apply, and pleasant to wear. I’ve already repurchased it multiple times and always keep a bottle in my beach bag. Highly recommend for anyone looking for dependable and mess-free sun protection!
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            Reviewed in the United States on June 12, 2025
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            Savannah
            Grantham, US
            ★★★★★ 5
            Best sunscreen I have
            Style: SPF 70, Size: 6.5 Ounce (Pack of 1)
            Alright, let’s dive into the Neutrogena Beach Defense Spray Sunscreen! This little gem is like your skin’s best friend on a sunny day. First off, let’s talk about the spray application—it’s so easy to use! Just a few spritzes, and you’re good to go. No more awkward rubbing in thick creams that leave you feeling like a sticky mess. The formula is lightweight and feels super comfortable on the skin. Plus, it’s water-resistant for up to 80 minutes, which means you can splash around in the waves without worrying about your sunscreen washing away. And let’s be real, nobody wants to look like a lobster after a day at the pool! What I really love is that it provides broad-spectrum protection against both UVA and UVB rays, so you can soak up the sun without the burn. Just remember to reapply, because no one wants to be that person who forgets and ends up looking like a tomato. I usually do so every hour or so if I’m in the pool or the sun is extra radiant. Overall, Neutrogena Beach Defense Spray Sunscreen is a total winner! It’s convenient, effective, and keeps your skin protected while you enjoy those sunny vibes. So grab your beach towel, slather on this sunscreen, and get ready to soak up the sun like the fabulous summer lover you are!
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            Reviewed in the United States on March 14, 2025
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            Kitti
            Whiting, US
            ★★★★★ 5
            Get it! It's the best spray sunscreen on the market
            Style: SPF 70, Size: 6.5 Ounce (Pack of 1)
            The best spray sunscreen there is. I have very fair skin and I don't tan, I burn, but as long as I use 70+ I'm good. I've tried a lot of sprays and what makes this one my favorite is that it feels great on the skin even moisturizing, sprays very well until empty and it doesn't pill up on my skin when I rub it. I've never gotten a sunburn with it and it smells great too. I will never use any other sprays again.
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            Reviewed in the United States on November 8, 2025
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            Faye Stallard
            Draper, US
            ★★★★★ 5
            Good quality comparable to expensive salon brands.
            Style: SPF 70, Size: 6.5 Ounce (Pack of 1)
            Excellent product works as described.
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            Reviewed in the United States on June 2, 2026

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