Wagner Tuning Competition Radiator Kit - BMW F8x M3/M4

Wagner Tuning Competition Radiator Kit

Maximise performance with the Wagner Tuning Competition water cooler kit for the BMW F80/F82/F83 M3/M4. Developed to push your BMW's cooling capacity to a whole new level, this complete kit replaces both the front and side low-temperature radiators with significantly larger, higher-capacity units — now with parts certificate.

The 3.0-litre S55B30 turbo engine in the BMW M3/M4 uses an indirect charge-air cooling circuit, meaning compressed intake air is cooled via a separate low-temperature water circuit rather than a direct air-to-air intercooler. Keeping that circuit cool is critical — if it heats up, charge air temperatures rise and power drops. This Wagner kit addresses that directly with innovative cooling technology to reduce cooling water temperature and improve charge air performance.

Thanks to the high-performance competition racing cores, radiator volume increases by an impressive 89% (front) and 94% (side). This enables maximum heat transfer while ensuring sufficient airflow for adjacent components such as the engine water cooler. Both water coolers are equipped with a thermally conductive anti-corrosion coating for a long-term, reliable cooling effect, and installation is straightforward and almost plug & play thanks to detailed installation instructions.

Fitment: BMW F80 M3, F82 M4, F83 M4 (S55B30 engine)

Part number: 400001003

Dimensions:
- OEM front mounted radiator: 590mm x 308mm x 25mm, V = 4.5L, A = 1817cm²
- Wagner Tuning front mounted radiator: 568mm x 468.4mm x 32mm, V = 8.5L (+89%), A = 2660.5cm² (+46.4%)
- OEM side mounted radiator: 250mm x 165mm x 40mm, V = 1.65L, A = 412.5cm²
- Wagner Tuning side mounted radiator: 252mm x 188mm x 68mm, V = 3.2L (+94%), A = 473.8cm² (+14.9%)

Kit includes:
- 1x front water cooler (low-temperature circuit)
- 1x side water cooler (low-temperature circuit)
- 1x carbon air duct for the side water cooler
- 1x mounting material
- 1x certificate + installation instructions

Important Information: This product is intended for performance use and should be installed by a qualified professional. It is the customer's responsibility to ensure compatibility with their specific vehicle prior to purchase. If you are unsure, please contact us before ordering. Gridline Custom Motorsports is not responsible for issues arising from incorrect installation, misuse, or improper product selection. Due to the nature of performance parts, some items may be special order and subject to supplier availability and lead times.