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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 24 reviews
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Product Reviews
★★★★★ 5
Durable and fun
Size: 4 Pieces, Size: 4 Pieces
I have a chewer who gets bored in the afternoon. She loves these Lego blocks. They’re sturdy enough for a big chewer and they hold her interest . She really enjoys figuring out how to get her breakfast!
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Reviewed in the United States on June 4, 2026
★★★★★ 3
Love the idea!
Size: 6 Pieces, Size: 6 Pieces
Love the idea of this product! Arrived 3/25/2026 and started using it the same day. Lab puppies (8 months old) loved it too, until one of the tabs was chewed off 😞
One of the puppies ate something (not this product) last week and was sick & finally threw up the rubber pieces he ate. So they can’t use the toys they love!
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Reviewed in the United States on April 1, 2026
★★★★★ 5
Get 8 pack for bigger / stronger dogs
Size: 6 Pieces, Size: 6 Pieces
This is the best puzzle toy i have found for my GSD mix. All around high quality product 10/10. Thick, durable rubbery material that holds up against a strong chewer. Individual pieces are big and bulky enough that i don’t have to worry about my bigger dog accidentally (or intentionally) swallowing a piece, so i don’t need to supervise.
That being said, if you have a bigger dog or a strong chewer, i HIGHLY recommend getting the 8 pack if you actually want to keep them busy for more than 20 mins consistently. Bigger dogs just have more leverage to tug on the pieces because obviously…they are bigger, so its just easier for them. The more pieces you add and more tangled/thicker you can make it, the less leverage they have and the harder it is for them to get a good grip.
I have a german shepherd/pitbull mix (big boi, v smart, v strong) and i initially got the 4 pack which, after the first few times, only took him about 5 mins to get all the pieces apart even with level 5 connections. So I ordered an additional 6 pieces (i have a total of 10 pieces now) so i could make it harder for him and it was totally worth it.
Now I use 8 pieces with level 5 connections and vital essentials freeze dried beef liver treats inside for my GSD and it consistently takes him 30+ mins to get the whole thing apart. I have timed this lol. I can rebuild the 8 pieces multiple different ways to make it more or less challenging (but i always opt for as difficult as possible to keep him entertained for as long as possible)
I use the other two pieces with a level 1 or 2 connection for my other dog- bordercollie mix who is not a very strong chewer, he mostly just rolls it around/ licks it until it finally opens or i help him.
Both of my dogs are obsessed with this. And i love watching them try to figure it out.
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Reviewed in the United States on May 7, 2026
★★★★★ 5
Awesome Tough Chewer Focus Puzzle
Size: 8 Pieces, Size: 8 Pieces
Our 2 yr old busy Mini Goldendoodle (24lbs) looooves this!
The material is super tough, yet malleable; he has chewed away and you can’t even tell.
We got the 8 pack, worth it! I load them all up with mostly kibble and a treat or two. It took just a short time for him to figure out how to really get it apart. On 1 it came apart really easy for him. We are mostly on 3s, with 2s. When he gets down to only 2 pieces connected it’s usually a 3 and it takes a little longer to get apart due to less leverage.
It is mostly easy to use but the higher the plug end is, the more effort it will also take for YOU to get it together. The numbers are a little hard to see, more so on the yellow over the blue.
If you use kibble like me, don’t fill it too full as then it won’t connect fully and be prepared for kibble to fly everywhere when they finally get it off. There are holes in the plug part, if you put something in it like peanut butter, remember to poke the holes out! Eew! Other than that they are fairly easy wash out in the sink!
Overall, this has become our go to, extended focus, quiet time, [essentially a] slow feeder!
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Reviewed in the United States on April 24, 2026
★★★★★ 5
Great!
Size: 4 Pieces
I have a mini Australian Shepherd (37 lbs) and she loves this! She can get level one but has a tougher time with level 2. I have tried 3 but she gives up so she hasn't gotten further than that lol. She is quite stubborn and gives up easy if she can't figure something out and is totally over it. The quality is great as it is thick and not easy to destroy. My fur baby does love it, she seems to think it is fun for at least an hour so it is worth it in my eyes. There are times I have to do something that takes longer and I just can't play with her so this is perfect for her. It was definitely worth the money
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Reviewed in the United States on July 16, 2025
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