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  1. Home
  2. Audi Cooling Upgrades
  3. CSF 97-02 Audi S4 (B5) Aluminum Radiator
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CSF 97-02 Audi S4 (B5) Aluminum Radiator
Load image into Gallery viewer, CSF 97-02 Audi S4 (B5) Aluminum Radiator

CSF 97-02 Audi S4 (B5) Aluminum Radiator

$ 499.00 $ 469.00
Brand:
CSF
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Shipping info

Shipping info

Processing Time: If the kit is in stock, allow 1-2 business days lead time before the kit ships.

Special order kits may have a lead time of up to 6 business days.

Custom built items have a lead time of 2 to 5 weeks in most circumstances.

Availability: Worldwide shipping is available for most items.

Airbags can only be shipped within the Continental US.

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CSF 97-02 Audi S4 (B5) Aluminum Radiator
$ 499.00 $ 469.00
  • Description
  • Bill's Take
  • Warranty
Description
EZT Logo

CSF 97-02 Audi S4 (B5) Aluminum Radiator

CSF Radiator upgrade. Clear fitment guidance, benefits, and fast availability verification through EZT.

Overview

What it is: A CSF Radiator upgrade designed to improve thermal management compared to the factory setup.

Why it matters: Improves coolant temperature stability and reduces heat soak during hard driving, hot weather, or tuned use.

Fitment at a glance
  • Leak Tested: Each unit is individually tested to guarantee reliability under high-pressure conditions.
  • Year: 1997-2002
  • Make: Audi
  • Model: S4
  • Chassis: B5
  • Engine: 2.7T
Stock check by chat Category: Radiator Ships: Fast supplier fulfillment

Who should buy this

Tuned vehicles, aggressive driving, track days, towing, or hot-climate owners who want more consistent temps and reliability.

How to get it quickly

Use live chat with your VIN or exact trim info. We will confirm the correct CSF part and verify availability before it ships.

If you have any questions, message us via live chat. Include your year, make, model, trim, and engine. VIN is best for accuracy.

What This Upgrade Does
  • Helps reduce heat soak during repeated pulls, long drives, or track sessions
  • Improves temperature stability compared to aging factory components
  • Supports reliability for tuned setups and hard use
  • Provides peace of mind in hot weather and stop-and-go traffic
Key Features
  • CSF engineered core design for improved heat rejection
  • Direct-fit form factor for OEM-style mounting in most applications
  • High-quality construction intended for performance use
  • Designed to integrate with your factory cooling system layout

Exact construction details vary by part number. If you want the full CSF spec sheet, message us and we will send it.

Fitment Details

Fitment can vary by engine, trim, and factory cooling package. We recommend confirming with VIN before ordering.

  • Leak Tested: Each unit is individually tested to guarantee reliability under high-pressure conditions.
  • Year: 1997-2002
  • Make: Audi
  • Model: S4
  • Chassis: B5
  • Engine: 2.7T
Installation Notes

This is a direct-fit replacement for the factory component in most applications. No tuning is required for installation. Professional installation is recommended if you are not familiar with cooling system service.

  • Plan for coolant and or fluid service during installation
  • Bleed the cooling system properly after install as required by your platform
  • If your car has additional sensors or cooling packages, confirm compatibility first
Shipping and Availability

Most CSF items ship quickly. If it is in stock at our supplier network, it typically leaves within 1 to 2 business days. If it is backordered, we will contact you with the best ETA before it ships. Need it fast? Message us on live chat and we will verify stock for your exact CSF part number.

Fastest way to order correctly
Live chat us your VIN and your goals (daily, tuned, track, towing). We will confirm the right CSF part and get it moving.
Original Product Notes

We kept your original imported notes here for reference.

CSF 97-02 Audi S4 (B5) Aluminum Radiator At Eurozone Tuning, we take pride in hand-selecting only the best products for our customers—products we trust to enhance performance, reliability, and value. The CSF High-Performance Aluminum Radiator for the Audi B5 S4 is a must-have upgrade for enthusiasts looking to improve their vehicle's cooling system. Built with cutting-edge technology and designed for a perfect OE-style fit, this radiator ensures your iconic B5 S4 stays cool, even during spirited driving or track sessions. Why Upgrade? The factory radiator on the Audi B5 S4 is prone to wear and inefficiency after years of use. With many of these vehicles now over 20 years old, replacing the original plastic tank radiator is inevitable. The CSF Aluminum Radiator offers a robust, all-aluminum construction with advanced cooling features that outperform the stock unit. Whether you're maintaining a daily driver or preparing for high-performance use, this radiator is an essential upgrade to prevent overheating and ensure consistent performance. Key Features: B-Tube Technology: Increases heat transfer by approximately 15% compared to standard oval welded tubes. Triple-Pass Design: Maximizes coolant flow through the core for improved cooling efficiency. 42mm Core: Features a high-efficiency 2-row core with multi-louvered fins for optimal airflow and heat dissipation. TIG Welded Military-Grade Aluminum: Provides unmatched durability and resistance to wear and corrosion. OE-Style Fitment: Includes machined quick-connect fittings and mounting points for a drop-in installation with no modifications required. Vibration-Free Design: Machined seating areas for rubber bushing pads ensure secure fitment and eliminate vibrations. Leak Tested: Each unit is individually tested to guarantee reliability under high-pressure conditions. Vehicle Fitment: Year: 1997-2002 Make: Audi Model: S4 Chassis: B5 Engine: 2.7T The Eurozone Tuning Advantage At Eurozone Tuning, we don’t just sell parts—we curate solutions that meet our rigorous standards for quality, performance, and reliability. The CSF Aluminum Radiator is trusted by enthusiasts worldwide for its ability to handle increased horsepower demands while maintaining optimal cooling efficiency. Whether you’re restoring your B5 S4 or upgrading it for spirited driving, this radiator is designed to deliver exceptional results. If you’re ready to upgrade your Audi’s cooling system with a product you can trust, order the CSF High-Performa
Bill's Take
CSF radiators and intercoolers really impress me. They do an amazing job of keeping everything cool, even when you're pushing the limits on the track or during some spirited driving. I trust their products completely—they’ve always performed like a champ for me. Plus, the quality and fitment are top-notch, making them an easy go-to for any build. You really can’t go wrong with CSF!
Warranty
  • Eurozone Tuning Branded Kits: These kits come with a 6-month warranty that covers replacement or repair due to manufacturing defects. Damage from improper installation, accidents, or misuse is not covered.
  • EZT Carbon Edition Steering Wheels: The EZT Carbon Edition steering wheels come with a 1-year warranty for workmanship. This warranty excludes damage caused by physical misuse, harsh environments, or improper installation.
  • Porterfield Brakes: Porterfield offers no warranty for brake pads due to the nature of the part.
  • AWE Tuning Products: AWE Tuning offers a lifetime warranty on their exhausts and a one-year warranty on their intakes and intercoolers. The warranty covers craftsmanship and materials under normal usage conditions. Abuse, improper installation, and modifications void the warranty.
  • ZAC Motorsports: ZAC Motorsports products are covered by a 2-year limited warranty. The warranty covers defects in materials and manufacturing, but does not include damage due to racing, misuse, or improper installation.
  • Motul Oils: Motul products come with a limited warranty that covers the shelf life and quality of the oil when used as directed. Warranty claims must be accompanied by proper documentation of vehicle usage and oil change intervals.
  • KW Coilovers: KW suspensions come with a limited lifetime warranty on their coilovers. This warranty is valid for the original purchaser and covers defects in workmanship and materials. Excludes damages from motorsports or improper installation.
  • ST Coilovers: ST Suspensions offer a 5-year limited warranty on their coilovers. The warranty covers craftsmanship, materials, and normal usage. Improper installation, racing, and modifications are not covered.
  • Eibach Coilovers: Eibach products carry a limited lifetime warranty. This covers defects in materials and workmanship but excludes damages caused by improper installation, racing, or misuse.
  • Ă–hlins Coilovers: Ă–hlins coilovers are covered by a 2-year limited warranty. This warranty applies to defects in materials and craftsmanship but excludes damages caused by improper installation or racing applications.
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