BMW S55 M2 Competition M3 M4 side radiator ATRADBMW5

Direct-fit AIRTEC Motorsport auxiliary radiator for BMW S55-powered M2 Competition, M3 and M4. No cutting, drilling or coolant line mods needed.

• 65% more coolant capacity than OEM for sustained thermal stability
• 13% larger frontal area improves airflow and heat dissipation
• Includes mesh stone guard, full fitting kit and instructions
• Powder-coated black finish; uses all OEM mounting points and connectors

Proven on fast road and track day use - not a cosmetic trim piece, but real cooling headroom for stage 2 or spirited daily driving.