SKU: 79774087373

CSF High-Performance Radiator (N20, N55) - F2x, F3x

Sale price$544.05 Regular price$604.50
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Ships within 48 hours · Estimated delivery Aug 26 - Aug 31

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Description

CSF High-Performance Radiator (N20, N55) - F2x, F3xThe 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 F-SERIES N20 AND N55 ENGINE


The CSF High Performance Radiator is the ultimate cooling solution for race and high-performance N20 or N55 powered F2x and F3x models.

This high-efficiency, all-aluminium radiator removes the plastic end tanks which are prone to failure and 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 which improves cooling by up to 25-30%.

Direct replacement for BMW part number 17117618807 (Automatic) or 17117600520 (Manual).

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.
  • 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.
  • Available for Auto/DCT (#CSF7081) and manual (#CSF7080) models.
  • 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
  • 1 Series / F20 (2012-2019) / M135i
  • 1 Series / F20 (2012-2019) / 125i
  • 2 Series / F22 / F23 (2014-2021) / M235i
  • 2 Series / F22 / F23 (2014-2021) / 228i
  • 2 Series / F22 / F23 (2014-2021) / 220i
  • 3 Series / F30 / F31 / F34 (2012-2018) / 335i
  • 3 Series / F30 / F31 / F34 (2012-2018) / 328i
  • 3 Series / F30 / F31 / F34 (2012-2018) / 320i
  • 4 Series / F32 / F33 / F36 (2014-2020) / 435i
  • 4 Series / F32 / F33 / F36 (2014-2020) / 428i
  • 4 Series / F32 / F33 / F36 (2014-2020) / 420i
                    Shipping Notes
                    • Free Standard Shipping on $100+ Orders to the USA.
                    • Except Preorder products are shipped in 48 hours.
                    • Delivery to the USA:
                    1. Standard Shipping : 3-10 business days
                    • If time is of the essence, please consider selecting expedited delivery for faster service.
                    Exchange/Return Notes
                    • We offer a 30-day return/exchange service after receiving.
                    • Final sale items are not eligible for returns or exchanges.
                    • To process your return/exchange, please contact us at [email protected]
                    • Please click here for more details>>> Return & Exchange Policy
                    SKU: 79774087373

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                    4.9 ★★★★★
                    Based on 20 reviews
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                    Verified Purchase
                    geoffrey desmond
                    West Palm Beach, US
                    ★★★★★ 5
                    Soft heels, here I come!
                    Color: Blue Haven
                    ⭐️⭐️⭐️⭐️⭐️ I bought these for my 16-year-old daughter, and she loves them. They’re super soft and cozy, and they’ve really helped with dry heels. The moisturizing lining works great, and her feet feel noticeably smoother after wearing them. She even wears them around the house because they’re comfortable, not bulky or slippery. Great quality and a fun little self-care item — definitely a win! I even bought myself and my mom a pair!
                    WAS THIS REVIEW HELPFUL?YesReportShare
                    Reviewed in the United States on February 10, 2026
                    E
                    Verified Purchase
                    Emily Ross
                    Lowell, US
                    ★★★★★ 5
                    Works great!
                    Color: Lavender Luxury
                    Kind of surprising but these actially work and are comfortable. I noticed a difference in my calloused heels after the first use.
                    WAS THIS REVIEW HELPFUL?YesReportShare
                    Reviewed in the United States on May 21, 2026
                    C
                    Verified Purchase
                    Chris
                    Port Orchard, US
                    ★★★★★ 5
                    Best thing ever!
                    Color: Lavender Luxury
                    These are the best thing ever! Put your favorite foot balm on then cover your heels with these socks and go to bed. You’ll wake up with the softest feet and no cracked heels!
                    WAS THIS REVIEW HELPFUL?YesReportShare
                    Reviewed in the United States on April 16, 2026
                    L
                    Verified Purchase
                    Lauren Day | Hawaii Mom Life
                    Carnegie, US
                    ★★★★★ 4
                    Works well if you wear them every day
                    Color: Lavender Luxury, Color: Lavender Luxury
                    These heel socks do work, but you need to be consistent and patient. The socks are soft with a gel lining on the inside that basically traps your body heat and moisture—kind of like a mini spa for your feet. My heels felt noticeably softer after just one hour of wearing them. That said, I don’t love sleeping with socks on, so it took me two nights to get used to them. I even took them off the first night because I couldn’t stand the feeling. After five nights of use with nightly exfoliating, my heels are definitely softer, but still cracked in some areas. I’m hoping they keep improving with continued use. If you stick with it and exfoliate regularly, these socks definitely help soften rough skin. Not a miracle fix overnight, but a helpful tool for healing cracked heels.
                    WAS THIS REVIEW HELPFUL?YesReportShare
                    Reviewed in the United States on June 6, 2025
                    A
                    Verified Purchase
                    Alyssa Marie
                    West Palm Beach, US
                    ★★★★★ 5
                    Amazing product
                    Color: Teal Tranquility
                    Great product worked within a week of consistent use
                    WAS THIS REVIEW HELPFUL?YesReportShare
                    Reviewed in the United States on April 23, 2026

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