BMW F8X M2C/M3/M4 CSF Performance Auxiliary Radiator with Rock Guard

CSF Performance Auxiliary Radiator Upgrade with Rock Guard for BMW F8X M2C/M3/M4

CSF High Performance Auxiliary Radiator upgrade with Rock Guard made to be a direct replacement to either the left or right side.

Like the other cooling systems on the F8X, the factory auxiliary radiators do a pretty good job in stock form. 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.

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.

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.

Direct Replacement, Plug and Play

Radiator sold as 1 piece, 2x are required for all applications

Multi-Fit - Fits Both Left & Right Side

2-Row 42mm High-Performance Core Featuring CSF's B-Tube Technology

Ultra Efficient 6.5mm Tall Fins with a Multi-Louvered Design for Maximum Surface Area Contact

Tank Volume increased by 10% and Core Size Increased by 6.4%

Finished in Satin Black for OEM+ Look

PLEASE NOTE: This listing is for 1x Radiator, 2 are required per vehicle.

Series / Chassis

F80 / F80N / F82 / F82N / F83 / F83N / F87N / MOSP

Models

M2 / M3 / M4

Engines

S55

This item will fit Vehicles with the following Engine Codes:

F80 S55 M3 Saloon
F80N S55 M3 Saloon
F82 S55 M4 Coupe
F82 S55 M4 GTS Coupe
F82N S55 M4 Coupe
F82N S55 M4 CS Coupe
F83 S55 M4 Convertible
F83N S55 M4 Convertible
F87N S55 M2 Competition Coupe
MOSP S55 M4 GT4 Coupe

Replaces Genuine BMW Part Number:

17 11 2 284 603 - 17112284603 - 2 284 603 - 2284603
17 11 2 284 604 - 17112284604 - 2 284 604 - 2284604