CSF Performance Aluminum Radiator - Audi S4 (B5) 2000-2002

CSF High-Performance all-aluminum radiator for the 2000-2002 Audi S4 (B5), covering Base and Avant. It runs a dual-core 2-row 42mm core with CSF's exclusive B-Tube technology, which raises tube heat-transfer surface area by about 15% over standard O-shape tubes for stronger cooling on the street or at the track. Ultra-efficient multi-louvered fins with a 6.5mm fin height maximize airflow through the core. The radiator is a drop-in fit and accepts all factory components, including the quick-connect hoses, AC condenser, mounting brackets, and fan shroud.

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