MagnaFlow 4481335 Catalytic Converter

California-legal universal catalytic converter

MagnaFlow 4481335 is a California Grade CARB-compliant universal catalytic converter built for 2.25-inch exhaust systems. It uses a stainless steel spun-body design with a ceramic substrate to help maintain exhaust flow while meeting the emissions requirements listed for approved applications.

Compatible With select 1996-2001 Volkswagen Beetle, Golf, Jetta, and Passat applications, this universal converter requires cutting and welding during installation. The compact 11.25-inch overall length and straight weld-on inlet and outlet make it a practical replacement for vehicles that need a CARB-approved OBDII catalytic converter.

Key features

• California Grade CARB-compliant universal catalytic converter
• 2.25-inch inlet and 2.25-inch outlet for matching exhaust tubing
• Stainless steel body and tube construction for corrosion resistance
• Spun-body round design with a single laser fusion weld to reduce leak potential
• Ceramic substrate for emissions control
• Post-converter oxygen sensor location with one sensor port
• Weld-on straight inlet and outlet for custom exhaust installation
• Fits listed Volkswagen Beetle, Golf, Jetta, and Passat applications

Product details

MagnaFlow’s 2.25in. Universal California OBDII Catalytic Converter line is built for emissions-focused repairs where CARB compliance matters. Part number 4481335 is engineered to meet or exceed California Air Resources Board requirements and has undergone additional testing for legal use in California and other CARB-restricted states on the listed vehicles. The stainless steel construction, spun body, and compact low-mass layout are designed to support thermal efficiency and long-term durability in demanding exhaust environments.

This part cross-references applications that require a CARB-compliant universal converter with a 2.25-inch exhaust connection and post-converter O2 sensor placement.

Common issues this part can address

• Check engine light caused by a failed catalytic converter
• Emissions test failure related to catalyst efficiency
• Corrosion or exhaust leakage at the converter body
• Restricted exhaust flow from a deteriorated converter substrate
• Need for a CARB-approved replacement on listed Volkswagen models

Installation notes and tips

Installation requires cutting and welding, so proper exhaust fabrication tools and alignment are important. Verify the vehicle’s engine family and emissions certification against the listed fitment before installation. Because this is a universal weld-on converter, confirm 2.25-inch tubing dimensions, sensor-port location, and available space under the vehicle before final welding.

Quality assurance

MagnaFlow states that this converter meets or exceeds California Air Resources Board requirements for the listed applications and has been tested for CARB guideline compliance. Part number 4481335 is intended for legal use in California and other CARB-restricted states only on the specified Volkswagen fitments.