MagnaFlow OEM Grade Direct-Fit Catalytic Converter 52257 for BMW 328i 2012-2016

MagnaFlow 52257 Direct-Fit Catalytic Converter

Upgrade your BMW's exhaust system with the MagnaFlow 52257 Direct-Fit Catalytic Converter, designed specifically for the 2012-2016 BMW 328i, 2013-2016 BMW 328i xDrive, and 2014-2016 BMW 428i. This high-performance component is engineered to keep your check engine light off while meeting or exceeding Federal and EPA emissions standards.

Key Features

• Body Material: Stainless Steel
• Substrate Material: Ceramic
• Overall Length: 18.75 inches
• Main Piping Diameter: 3.75 inches
• Converter Quantity: 1
• Inlet/Outlet Attachment: Clamp-On
• Oxygen Sensor Location: Pre Converter and Midbed
• Finish: Stainless Steel
• Type: Direct-Fit
• Series: OEM Grade
• Universal or Specific Fit: Specific

Performance and Installation

The MagnaFlow 52257 is built with free-flowing mandrel-bent tubing that enhances exhaust flow, improving overall engine performance. Installation is straightforward—no cutting or welding required—allowing you to tackle this project in your garage with basic tools. Plus, the single laser fusion weld design minimizes leak potential, ensuring a reliable, long-lasting fit.

Fitment

This catalytic converter is compatible with the following BMW models:

• BMW 228i (2014-2016)
• BMW 328i (2012-2016)
• BMW 428i (2014-2016)

It also interchanges with OE part number 18 30 7 607 665, making it a perfect replacement for worn or damaged factory units.

Customer Feedback

A BMW 328i owner shared, “I installed the MagnaFlow 52257 on my 2015 model, and I couldn’t be happier. The fit was spot on, and I noticed a subtle increase in throttle response. Plus, the installation was a breeze!”

Important Notes

This product fits in the front position of your exhaust system. Please note, the MagnaFlow 52257 is intended for racing competition only and is not legal for use on public highways or non-racing competition off-road vehicles. By purchasing this product, you agree to sign our Vehicle Compliance Waiver.