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Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
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CSF
CSF 7071 High-Performance All-Aluminum Radiator for 2000-2002 Audi S4 (B5)
This product will be available for sale in 2 weeks, but you can pre-order now to receive 10% discount!
Fits 2000-2002 Audi S4 Base and Avant (B5).
Maintain optimal engine temperatures on the street or track with the CSF High-Performance All-Aluminum Radiator. This drop-in replacement is engineered to handle the increased cooling demands of high-horsepower builds and motorsport environments where factory radiators often fail. Built from lightweight, high-strength aluminum, this radiator replaces the plastic-tank OE unit with a durable, satin-finished race-style core.
The heart of this radiator is CSF’s exclusive B-Tube technology. Unlike standard "O" shaped tubes, the B-tube design uses a seam-brazed internal structure that increases the heat transfer surface area by approximately 15%. This creates the efficiency of two smaller tubes within a single 42mm 2-row core, promoting dual liquid laminar flow. To further enhance heat rejection, CSF utilizes 6.5mm multi-louvered fins that are precision-calculated for maximum airflow. Every unit features CNC-machined brackets and quick-connect inlet/outlet fittings to ensure a perfect factory-style fit with OEM hoses, fans, and mounting points.
- Manufacturer Part Number: 7071
- High-efficiency 2-row 42mm core with B-Tube technology
- 6.5mm multi-louvered fins for maximum surface area contact
- CNC-machined quick-connect inlet/outlet connections
- CNC-machined mounting brackets and fittings for a drop-in fit
- All-aluminum race-style drain plug
- Compatible with OEM quick-connect hoses, AC condenser, and fan shroud
- Smooth satin finish
🔧 Fitment & Compatibility
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2001-2002 | Audi | S4 | Avant |
| 2000-2002 | Audi | S4 | Base |
Choose your Location
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Atlus
1340 Cobb Dr, Unit 1, Eustis, FL 32736
352-234-4458
Mon – Fri: 8:30 am – 4:30 pm
Sat: 9:00 am – 2:00 pm
Sun: Closed
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If you can find the part for a lower price from an authorized dealer/shop, we'll match the price! Reach out to Hello@AtlusAuto.com, our live chat located at the bottom right of your screen, or request an Atlas Price Guarantee, or visit our dedicated APG page to submit a request.
CSF 7071 High-Performance All-Aluminum Radiator for 2000-2002 Audi S4 (B5)
This product will be available soon, but you can pre-order now to get on the list before others!
US Based Support - In Florida
30 Days Satisfaction Guarantee
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Fits 2000-2002 Audi S4 Base and Avant (B5).
Maintain optimal engine temperatures on the street or track with the CSF High-Performance All-Aluminum Radiator. This drop-in replacement is engineered to handle the increased cooling demands of high-horsepower builds and motorsport environments where factory radiators often fail. Built from lightweight, high-strength aluminum, this radiator replaces the plastic-tank OE unit with a durable, satin-finished race-style core.
The heart of this radiator is CSF’s exclusive B-Tube technology. Unlike standard "O" shaped tubes, the B-tube design uses a seam-brazed internal structure that increases the heat transfer surface area by approximately 15%. This creates the efficiency of two smaller tubes within a single 42mm 2-row core, promoting dual liquid laminar flow. To further enhance heat rejection, CSF utilizes 6.5mm multi-louvered fins that are precision-calculated for maximum airflow. Every unit features CNC-machined brackets and quick-connect inlet/outlet fittings to ensure a perfect factory-style fit with OEM hoses, fans, and mounting points.
- Manufacturer Part Number: 7071
- High-efficiency 2-row 42mm core with B-Tube technology
- 6.5mm multi-louvered fins for maximum surface area contact
- CNC-machined quick-connect inlet/outlet connections
- CNC-machined mounting brackets and fittings for a drop-in fit
- All-aluminum race-style drain plug
- Compatible with OEM quick-connect hoses, AC condenser, and fan shroud
- Smooth satin finish
🔧 Fitment & Compatibility
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2001-2002 | Audi | S4 | Avant |
| 2000-2002 | Audi | S4 | Base |
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