One Stop Solutions 13422 Radiator

Radiator for Volkswagen and Audi Applications

This One Stop Solutions radiator, part number 13422, is built for direct replacement in select Volkswagen and Audi vehicles. It uses a crossflow design with a PA core and plastic tanks to support consistent engine cooling in daily driving and high-mileage use.

Compatible With 2004-2009 Audi A3 Quattro, 2007-2009 Audi TT Quattro, 2007-2008 Volkswagen Eos, 2008 Volkswagen R32, 2009-2010 Volkswagen Passat, and 2012-2018 Volkswagen Passat, this radiator is engineered for OE-style fit and function.

Key Features

• Part number 13422 for direct identification and ordering
• Crossflow radiator design
• PA core material with plastic tank construction
• 1-row core layout
• Core dimensions: 25 9/16 in. height, 15 1/4 in. width, 1 in. thickness
• 1 1/4 in. inlet and outlet diameters
• No engine oil cooler, transmission oil cooler, or cap included
• Built to factory specifications for fit, form, and function

Detailed Description

One Stop Solutions 13422 is a replacement radiator engineered for Volkswagen Passat, Volkswagen CC, Audi A3 Quattro, Audi TT Quattro, Volkswagen Eos, and Volkswagen R32 applications. The radiator uses premium-grade tubes, fins, headers, and tanks, with fitted components torqued to factory specifications to support reliable installation and consistent cooling performance. Engineering updates focus on improving durability and extending service life, including design changes that address common failure points found in higher-mileage vehicles.

This part cross-references 5C0121251F and CU13422 for the same application.

Common Problems This Radiator Can Address

• Coolant leaks from a cracked or aging radiator tank
• Overheating caused by restricted or damaged radiator flow
• Cooling performance loss from worn core fins or internal wear
• Fitment issues when replacing an original radiator with a direct OE-style unit
• Heat buildup in higher-mileage Volkswagen Passat and Audi A3 Quattro cooling systems

Installation Notes and Tips

Verify inlet and outlet sizes, core dimensions, and vehicle application before installation. This radiator is a crossflow unit with 1 1/4 in. inlet and outlet connections, so matching hose routing and mounting points is important for proper fit. Because no cap is included, reuse or replace the cap separately as needed. For Volkswagen Passat and Audi TT Quattro service, confirm the vehicle’s cooling system configuration against the original part number before installation.

Quality Assurance

Each OSC radiator is tested up to three times during production. The transmission and engine oil cooler circuits are checked before tank installation, the core is tested before assembly, and the completed radiator is tested again after assembly to confirm performance and integrity.