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Description
CSF Top Mount Dual-Pass Charge-Air-Cooler - F8x M2 Competition & CS, M3 & M4The 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 BMW F8X M3, M4, & M2 COMPETITION
The BMW F80 M3, F82/F83 M4 & F87 M2 Competiton are still regarded as some of the best performance platforms available. BMW’s S55 Motor has amazing potential for power and there are countless performance parts available for it. However, like most production engines, the S55 doesn’t come equipped from the factory with sufficient cooling capabilities to cope with added power or even prolonged performance driving. CSF have designed a full line of S55 cooling options to help you get the most out of your BMW F8X. The CSF Charge-Air-Cooler, Heat Exchanger, and Transmission Cooler will keep you ahead of the competition.
BMW F8X TOP MOUNT DUAL-PASS CHARGE-AIR-COOLER
The S55 suffers heavily from heat soak. Many tuners witnessed this early on after doing multiple dyno pulls and seeing significant drops in power after each consecutive pass. Many F8X owners experienced the same loss of power on the track as the engine just could not cool off during laps. The solution is two fold: The Charge-Air-Cooler & Front Mount Heat Exchanger work together to keep the intake temps down and power up. The factory units simply cannot dissipate enough heat to keep up with prolonged performance driving. Our Charge-Air-Cooler boasts a core size that is 60% larger, greatly increasing the capacity for heat transfer from the hot charge air coming from the turbos. Paired with the Front Mount Heat Exchanger the system is able to maintain lower intake temps and keep your BMW F8X’s power up.
The CSF Dual-Pass Top Mount Charge Air Cooler is a direct replacement for BMW part number 17517846235.
FEATURES
- World’s 1st cast end tank designed top mount charge-air-cooler for the BMW S55 engine.
- Multiple air dividers cast into both the hot/cold side end tanks for optimized air flow through the custom designed CSF liquid-to-air intercooler core (CFD analysis and testing completed to ensure optimal performance).
- 60% increase in core size compared to the OEM cooler.
- Left/right, cross-flow, dual-pass core configuration with 2-stage water cooling for maximum efficiency and intake temperature reduction (vs. OEM single-pass vertical-flow design).
- Designed with 3D scanning / rapid prototype technology to ensure precise fitment and maximum surface area utilization.
- “Drop-in fit” design for an easy & quick plug-and-play installation, complete with OEM style “Quick-Connect” water connections and sensor ports.
- Finished with a Raw Aluminium finish (CSF8082R) or a professional "Crinkle Black" powder coat finish (CSF8082). Optional finishes also available for an additional cost.
Models
- 2 Series / F87 M2 (2016-2021) / M2 Competition
- 2 Series / F87 M2 (2016-2021) / M2 CS
- 3 Series / F80 M3 (2014-2019) / M3
- 3 Series / F80 M3 (2014-2019) / M3 Competition
- 3 Series / F80 M3 (2014-2019) / M3 CS
- 4 Series / F82 / F83 (2014-2019) / M4
- 4 Series / F82 / F83 (2014-2019) / M4 Competition
- 4 Series / F82 / F83 (2014-2019) / M4 CS
- 4 Series / F82 / F83 (2014-2019) / M4 GTS
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.5 ★★★★★
Based on 25 reviews
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Product Reviews
★★★★★ 5
WorthIt! Nighttime ritual , Creates functional system. We drink on evenings of heavy dinners
Flavor Name: Unflavored, Size: 1.1 Pound (Pack of 1)
WorthIt! Every other night before bed routine. Creates a happy and well functioning system. We add a splash of flavored electrolytes . Nice treat as well.
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Reviewed in the United States on May 18, 2026
★★★★★ 4
Good quality
Flavor Name: Unflavored, Size: 1.1 Pound (Pack of 1)
Seems to work as expected and looks consistent in quality. The only problem I have with it, is the opening being too small for my hand when it is running low. I bought a another brand last time with the same quality and I could reach inside. I comfortably fit men's large size gloves, so my hands aren't huge. Maybe a long handle scoop would help...
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Reviewed in the United States on April 27, 2026
★★★★★ 5
No taste or texture - it completely dissolves!
Flavor Name: Unflavored, Size: 1.1 Pound (Pack of 1)
Easy way to add fiber to diet. Stir it in coffee or a non-carbonated cold drink. You can't tell it as even added because it completely dissolves.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
★★★★★ 5
Keeps me feeling full. Perfect addition to protein shake
Flavor Name: Unflavored, Size: 1.1 Pound (Pack of 1)
Tasteless pretty much. I’ve added to coffee, lemonade, cereal with milk, sauces, stir fry, pasta sauce, yogurt. It’s great addition to my protein drink. It helps me both keeping good on the bathroom but it helps me feel more full and snack less. It has been a secret in helping me lose weight.
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Reviewed in the United States on April 3, 2026
★★★★★ 5
A Convenient Fiber Supplement- Digestion, Regularity, Microbiome, Satiety, Hair, Skin, Nails
I’ve tried quite a few fiber supplements over the years, and this one stands out mostly because it combines digestive support with beauty-focused ingredients instead of being just another plain fiber gummy. The formula includes inulin and chicory root fiber, along with a fairly large probiotic blend containing multiple strains like Lactobacillus acidophilus, Lactobacillus plantarum, and Bacillus coagulans. That combination makes sense since prebiotic fiber and probiotics are often paired together to help support digestive balance and regularity.
The added hair, skin, and nail ingredients are also interesting here. Biotin is commonly used for supporting stronger nails and healthier-looking hair, while collagen peptides and keratin are popular ingredients for skin elasticity and hair structure. Vitamin C helps support collagen production naturally, and Vitamin E adds antioxidant support. The apple cider vinegar and saw palmetto are smaller additions, but they round out the formula nicely for overall wellness support.
One thing I appreciated is that these are gummies instead of powders or large capsules. Fiber supplements can sometimes feel like a chore, especially the gritty drink mixes, so having a chewable option made it easier to stay consistent. The blueberry flavor was actually pleasant and not overly artificial. Texture-wise, they were softer than expected and easy to chew.
As far as results, I mainly noticed gradual digestive benefits after about a week or so of consistent use. Things felt more regular and less sluggish overall, especially on days where my diet wasn’t as balanced as it should have been. The fiber content is fairly substantial for gummies, so I’d definitely recommend drinking enough water with them because increasing fiber too quickly can sometimes cause bloating at first. Starting with a smaller serving may help if you’re not used to fiber supplements.
I can’t say I noticed dramatic changes with hair, skin, or nails during the time I used them, but those ingredients usually take longer to show visible effects anyway. Even without obvious cosmetic changes, the combination of biotin, collagen, keratin, and antioxidants gives the formula a more well-rounded feel compared to standard digestive gummies.
Another positive is the allergen-friendly formula. Being gluten-free and free from dairy, wheat, peanuts, and eggs makes it accessible for many people with dietary restrictions. The overall ingredient profile feels thoughtfully put together instead of overloaded with unnecessary fillers.
Overall, I think this works best for someone looking for an easy daily fiber supplement that also offers some additional wellness support beyond digestion alone. The biggest benefit for me was the digestive regularity and convenience factor. The beauty-support ingredients are a nice bonus, even if they may require long-term consistent use before noticeable results appear.
**As always, results can vary from person to person. Consulting a healthcare provider before starting any new supplement is advisable. Keep well (:
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Reviewed in the United States on May 11, 2026
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