CSF High-Performance Auxiliary Radiator - BMW G8X M2 / M3 / M4 (Single)

CSF High-Performance auxiliary radiator for the BMW G8X M2, M3 and M4. Its TIG-welded aluminum tanks are larger than the OE plastic units for more strength and fluid volume, and a 2-row 42mm core with CSF's exclusive B-Tube technology and 5mm fins increases cooling capacity and recovery. It is a true drop-in that fits both the left and right side, uses OEM-style quick-connect fittings, and includes a detachable rock guard. Sold individually; all applications use two auxiliary radiators.

Specifications

This part fits:

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy