Wagner Tuning Radiator Kit – BMW M3 / M4 (G80/G81/G82)

OVERVIEW

The 3.0 liter S58 biturbo six in the BMW M3 and M4 uses an indirect charge-air cooling circuit, so charge air is cooled by a separate water circuit rather than by ambient air. Lowering the temperature of that cooling water translates directly into better charge-air cooling, and that is exactly what this Wagner Tuning upgrade water cooler does.

Wagner's competition racing core increases the volume of the standard water cooler by 60%. The ratio between the inner and outer cooling surfaces gives maximum heat transfer while still allowing enough airflow through to adjacent components such as the engine water cooler. The coolers carry a thermally conductive anti-corrosion coating for a long-term cooling effect, and installation is plug and play with the supplied instructions.

SPECS

• Wagner cooler dimensions: 505 mm x 605 mm x 48 mm
• Wagner cooler volume: 14.67 liters
• Wagner cooler frontal area: 3,055 cm²
• OEM cooler dimensions: 505 mm x 605 mm x 30 mm
• OEM cooler volume: 9.16 liters
• OEM cooler frontal area: 3,055 cm²
• Radiator volume: 60% greater than the standard water cooler
• Core type: competition racing core
• Coating: thermally conductive anti-corrosion coating
• Installation: plug and play

PARTS INCLUDED

• Complete radiator kit as supplied by Wagner Tuning; see the installation instructions for the full bill of materials.

TECH RESOURCES

Additional Parts Required

• None. Wagner Tuning specifies no additional hardware — the kit replaces the OEM low-temperature radiator in the original cooling package location.
• Coolant will need to be drained and refilled to BMW specification as part of the installation.

Installation

• Wagner Tuning 400001021 installation instructions (PDF)

PART NUMBER

• 400001021

VEHICLE APPLICATIONS