CSF High Performance All Aluminum Radiator for B5 A4 1.8T – Drop-In Fit

Description

Designed by CSF, a leader with over 50 years of experience in radiator manufacturing, this high-performance all aluminum radiator is engineered to keep your B5 Audi A4 1.8T or Volkswagen Passat running at optimal temperatures. Whether you’re on the street or racing at the track, this radiator enhances cooling efficiency, making it an essential upgrade for high horsepower builds or motorsports environments. Its 2-Row core features CSF’s exclusive B-Tube Technology, where the tubes are specially formed into a ‘B’ shape and brazed over the seam, resulting in a stronger, thinner, and lighter structure that improves heat transfer by approximately 15% compared to traditional oval tubes. This design enables dual liquid laminar flow, which significantly increases cooling performance and efficiency. The radiator also incorporates ultra-efficient multi-louvered fins that are precisely aligned to maximize airflow, tested rigorously in wind-tunnel environments for maximum heat rejection.
Installing this radiator is straightforward, as it is a true plug-and-play replacement that fits directly into the OEM location without modifications, unless specified otherwise. It features CNC-machined mounting brackets, OEM-style inlet and outlet connections, and is TIG-welded from 100% aluminum for durability and leak resistance. The unit is pressure tested and comes with a smooth satin finish, offering both performance and aesthetic appeal. Suitable for manual transmission models, this radiator provides a reliable cooling solution backed by a 2-year limited warranty, making it a trusted choice for enthusiasts and professionals alike.

Features:

• 6.5mm tall ultra-efficient fins with multi-louvered design for maximum surface contact

• True plug-and-play ‘Drop-in Fit’ installation with no modifications required

• CNC machined mounting brackets and OEM style inlet/outlet connections

• 45 cooling tubes with exclusive B-Tube technology for enhanced heat transfer

• 2-row, 42mm ultra-high-performance dual pass core

• 100% all aluminum TIG-welded construction for durability and corrosion resistance

• Individually leak and pressure tested for quality assurance

• Designed specifically for manual transmission models

• Includes smooth satin finish for a sleek look

• Backed by a 2-year limited warranty

Fitment:
Audi A4 Base 1997
Audi A4 Base 1998
Audi A4 Base 1999
Audi A4 Base 2000
Audi A4 Base 2001
Audi A4 Quattro Avant 1999
Audi A4 Quattro Avant 2000
Audi A4 Quattro Avant 2001
Audi A4 Quattro Base 1997
Audi A4 Quattro Base 1998
Audi A4 Quattro Base 1999
Audi A4 Quattro Base 2000
Audi A4 Quattro Base 2001
Volkswagen Passat GLS 1998
Volkswagen Passat GLS 1999
Volkswagen Passat GLS 2000
Volkswagen Passat GLS 2001