However, once you start adding a lot of power and pushing the car in aggressive driving conditions, the factory systems start to show its limitations. As more and more owners have pushed the limits of their S55, CSF saw the need and demand. The F8X platform is also almost a decade old with the newest examples being at least 5 years old. Over time the original coolers end up with damaged or clogged fins that greatly reduce their cooling capacity.
Compared to the OEM F8X coolers, the CSF units are a significant upgrade. CSF eliminated the OE plastic mounting pod by incorporating it into the modular design that fits both sides. This design improvement increases the size of both the core and tanks. The extra space taken from the mounting pod allowed for a ~7% increase in Core Size and an ~10% increase in Tank Volume. With a larger 2-row 42mm core, cooling efficiency and capacity are drastically increased. The high efficiency core using CSF’s Exclusive B-Tube Technology maximizes airflow and heat dissipation. 100% All-Aluminum construction ensures the best performance and durability. The mounting pins and brackets are much stronger and more durable than the OE plastic pod mounting system. In addition, the black finish provides extra protection and offers a stealthy look behind the grilles of your F8X.
Features
KEY FEATURES
- Sold Individually - all applications require 2 auxiliary radiators
- Multi-Fit - Fits Both Left & Right Side
- 2-Row 42mm High-Performance Core Featuring CSF’s B-Tube Technology
- 2026 Update: New "Track-Spec" 5mm Tall Ultra Efficient Fins with a Multi-Louvered Design for Maximum Surface Area Contact and Heat Dissipation
- Tank Volume increased by 10% and Core Size Increased by 6.4%
- 100% All-Aluminum TIG-Welded Construction
- OEM Style "Quick Connect" Inlet/Outlet
- True "Drop-in Fit" Requires No Modifications to Install
- Includes Detachable Rock Guard
- Individually Leak and Pressure Tested
- High-Performance Upgrade Suitable for Professional Racing, Street Performance, or OEM Replacement
- Satin Black Finish for OEM+ Look
- 2 Year Limited Warranty
DESIGN & ENGINEERING
CSF designed the coolers to be a true "Drop-in Fit" for easy installation. Each cooler mounts in the factory location and uses the OEM quick connections. The High-Performance Auxiliary Radiators work in conjunction with the rest of the cooling system to reduce temperatures. They not only help keep temperatures in optimal ranges, but prolong the heat soak threshold. There’s nothing worse than having your track session cut short because you need to do a cooldown lap.
Each CSF F8X Auxiliary Radiator can fit the left or right side. The fitting and plugs are swappable and can be easily set up for either side.
OEM VS CSF
Compared to the OEM F8X coolers, the CSF units are a significant upgrade. CSF eliminated the OE plastic mounting pod by incorporating it into the modular design that fits both sides. This design improvement increases the size of both the core and tanks. The extra space taken from the mounting pod allowed for a ~7% increase in Core Size and an ~10% increase in Tank Volume. With a larger 2-row 42mm core, cooling efficiency and capacity are drastically increased. The high efficiency core using CSF’s Exclusive B-Tube Technology maximizes airflow and heat dissipation. 100% All-Aluminum construction ensures the best performance and durability. The mounting pins and brackets are much stronger and more durable than the OE plastic pod mounting system. In addition, the black finish provides extra protection and offers a stealthy look behind the grilles of your F8X.
In addition, the CSF auxiliary radiators also feature integrated bolt on rock guards to keep the coolers safe. You’ve no doubt heard horror stories about OEM coolers getting punctured and spilling fluids all over the road or track. Now you can feel more confident that your cooling system is safer from road debris.
MODULAR DESIGN
CSF used a modular design so the auxiliary radiator can fit either side. There are several benefits to this type of design and it offers several benefits. One of those benefits is for serious track applications. Having spare parts is always a great idea. Having one auxiliary radiator that fits both sides where you’d normally need one of each is a big cost and space saver. Getting an extra as backup is more cost/space efficient with the CSF units.
F8X S55 COOLING SYSTEM
The F8X S55 cooling system is decently complex. Diagrams have been included for anyone who doesn’t understand how the whole system flows.
The cooling system consists of 6 to 7 heat exchangers depending on your transmission.
Because each auxiliary radiator is used for a different system you can elect to replace one at a time. For those looking to further improve the Charge Air Cooling system replace the right side auxiliary radiator. Those looking to improve the engine cooling system should replace the left side.
Charge Air System (5 – right side auxiliary Radiator)
Engine Cooling System (1 – Left side auxiliary Radiator)
- 1. Auxiliary Radiator (Right Side) - Charge Air Cooling System: CSF #8258 - High Performance Auxiliary Radiator
- 2. Radiator - Engine Cooling System
- 3. Front Mount Heat Exchanger - Charge Air Cooling System: CSF #8075/8075V - High-Performance Front Mount Heat Exchanger
- 4. Charge Air Cooler - Charge Air Cooling System: CSF #8082 - Dual-Pass Top Mount Charge-Air-Cooler
- 8. Auxiliary Radiator (Left Side) - Engine Cooling System: CSF #8258 - High Performance Auxiliary Radiator
- 9. Engine Oil Cooler: CSF #8220 - High-Performance Engine Oil Cooler
- 10. DCT Transmission Cooler: CSF #8081 - Dual-Pass Race-Spec DCT Transmission Cooler
SPECIFICATIONS
| Feature | OEM | CSF |
|---|---|---|
| Core Width & Rows | 41mm - 1-Row | 42mm - 2-Row |
| # Cooling Tubes | 24 | 27 |
| # Cooling Fin Rows | 25 | 28 |
| Fin Height | 8mm | 6.5mm |
| Design | All-Aluminum Construction | 100% All-Aluminum TIG-Welded Construction |
REPLACES OEM PART NUMBERS
17112284603, 17112284604
WARRANTY
Limited warranty, 2 years, covering CSF High-Performance Cooling Systems under normal use and service (original purchaser).
Vehicle Compatibility
What’s Included
- 1x CSF Radiator
Availability & Shipping
In stock and ships from a US warehouse, typically within 1–3 business days. Standard Shipping applies to every order — rates are calculated at checkout, with tracking provided once your order ships. Some items may require additional processing time depending on the specific product and current demand. Track your order any time at eurospeed.co/pages/track for a live delivery estimate.
Delivery time depends on the product. Most in-stock parts ship within days, while carbon fiber and made-to-order items may require production time before they ship. For the specific timeline on any item, check the Availability & Shipping section on that product’s own page — the guide below covers our general shipping types.
Shipping Overview
Depending on the item, free air freight may be available for select carbon fiber components, with estimated shipping around 1–2 weeks after dispatch. Larger hoods, oversized body components, and certain made-to-order items may require sea freight and longer delivery windows. If timing is important, please contact us at support@eurospeed.co before placing your order.
Shipping Coverage
EuroSpeed ships to customers across the United States and internationally. Shipping is included in the price of eligible products for your convenience and covers the initial cost of delivery to your destination.
Import duties, taxes, clearance fees, or customs charges required by your destination country are not included and remain the recipient’s responsibility.
Order Processing & Fulfillment
Every order is reviewed, processed, and prepared before shipment. Most in-stock products are processed within 1–3 business days, though some orders may take up to 5 business days depending on fulfillment location, product type, order volume, or courier pickup timing.
EuroSpeed stocks select high-demand products at our U.S. facility and international fulfillment centers. Because our catalog includes many vehicle-specific and specialty parts, not every product is held in-house at all times.
Some orders may ship through our trusted fulfillment network, which may include verified manufacturing partners, authorized distributors, regional warehouses, and international fulfillment centers.
- Orders may ship from a U.S. warehouse, international warehouse, manufacturer, or authorized fulfillment partner.
- Some products may require additional handling, processing, production, or quality-check time before shipment.
- Orders enter fulfillment shortly after being placed and may no longer be eligible for cancellation once processing, production, or shipment preparation begins.
Custom, Made-To-Order & Oversized Items
Custom, made-to-order, and oversized product categories may include carbon fiber steering wheels, hoods, trunk lids, fenders, front lips, splitters, side skirts, diffusers, bumpers, body kits, widebody components, select spoilers, rear wings, and other large carbon fiber components.
Many carbon fiber items are made to order. Some products may already be stocked and ready to dispatch when available, but if inventory is unavailable, your purchase reserves the next available production slot instead of waiting for a separate restock listing.
Production time: Production can take 1–4 weeks depending on product type, selected options, finish, current queue, and quality-control timing.
Shipping time: Shipping can take 2–10 weeks depending on item size, freight method, destination, customs processing, carrier delays, warehouse transfers, and final delivery location. Carbon fiber steering wheels typically ship faster, with shipping usually taking 3–7 business days after dispatch.
By purchasing custom, made-to-order, or oversized items, you acknowledge and accept the extended production, fulfillment, and shipping timelines associated with these products.
Tracking Updates & Delays
All orders receive a tracking number once generated by the courier. Tracking may take 2–3 business days after dispatch to show movement in the courier’s system.
Certain international, oversized, or freight shipments may show limited updates during transfer between fulfillment locations, warehouses, customs, or final-mile carriers. In some cases, tracking is provided or begins updating once the item reaches a regional warehouse, local carrier, or final delivery network.
Shipping timelines are estimates and are not guaranteed. Delays caused by high order volume, weather conditions, customs inspections, carrier disruptions, production queues, warehouse transfers, holidays, or other external factors may occur and are outside of EuroSpeed’s direct control. These delays do not qualify for cancellations or refunds unless the carrier officially marks the package as lost.
Delivery Responsibility
Upon delivery, carefully inspect the item for visible defects or damage before signing for it. If the item is damaged or not as expected, do not accept the package. Once a damaged or defective product is accepted, EuroSpeed cannot cover return shipping costs.
EuroSpeed is not liable for packages marked as delivered by the carrier. If a package is lost, stolen, or missing after being marked as delivered, the customer must file a claim directly with the shipping carrier. Our team will assist with available documentation when needed.
Shipping addresses typically cannot be changed once an order has been marked as shipped. If an address change is possible through the carrier, any carrier redirect, correction, or address-change fee will be the customer’s responsibility.
Please ensure your shipping address is entered correctly at checkout. Orders shipped to incorrectly provided addresses are the customer’s responsibility. EuroSpeed is not responsible for failed deliveries, additional shipping costs, lost packages, or refunds caused by incorrect shipping information, failure to accept delivery, or failure to collect a package from the post office or carrier pickup location within the required time frame.
Customs, Duties & Import Fees
EuroSpeed’s free shipping policy does not include import fees, taxes, duties, clearance charges, or other fees required by your destination country. These charges are the responsibility of the recipient, and EuroSpeed is not responsible for any duties or taxes requested by local customs.
Most shipments clear customs automatically through the shipping provider. However, if additional information is needed to complete the process, our team will assist where possible to help ensure a smooth resolution.
If customs clearance fails and the item is returned or destroyed:
- EuroSpeed reserves the right to deny refund claims.
- Returned items may incur return shipping fees, which will be deducted from any eligible refund.
- Items deemed too costly to return may be destroyed, and no refund will be issued if this occurs.
Package Protection
For added peace of mind, EuroSpeed offers ShipInsure package protection as an optional service at checkout. When selected, this service provides coverage for lost or damaged packages. EuroSpeed is not responsible for shipping delays, lost packages, or damaged items if purchase protection is not selected during checkout.
- Protects against lost or damaged packages.
- Must be selected at checkout.
- Not all oversized body kit purchases are eligible. Please contact us before ordering if custom insurance arrangements are needed.
To file a claim, please visit our Claims Center.
- Claims must be filed within 14 days of delivery.
- Packages stuck in transit for 14 days are considered lost.
- Damage claims typically require photo evidence.
- A 2-day buffer after delivery may apply before lost or stolen claims can proceed.
- Police reports may be required for orders over $500 or where fraud is suspected.
- “Damaged” means the item is broken and unusable.
Questions?
For questions about your order, shipping timeline, customs clearance, or delivery status, please contact our team at support@eurospeed.co. We’re here to help.
Product Installation & Use Disclaimer
EuroSpeed is not liable for any damages, injuries, fitment issues, installation issues, or vehicle-related problems resulting from the installation, modification, misuse, or use of our products.
Products should be installed carefully and used only as intended. For complex installations, electrical components, performance parts, body components, or products requiring modification, professional installation is recommended to help ensure proper fitment, function, and safety.
Any damage caused by improper installation, misuse, modification, or failure to follow installation requirements is the sole responsibility of the customer. By purchasing, installing, or using this product, you acknowledge and accept all associated risks.