AP Exhaust 643169 Catalytic Converter - Rear

AP Exhaust Direct Fit Converter 643169

AP Exhaust Direct Fit Converter 643169 is a Federal / EPA direct-fit undercar catalytic converter for select BMW rear applications with SULEV emissions. It is built with a flange inlet and pipe outlet for a direct replacement path on the exhaust system.

The AP Exhaust Direct Fit Converter line focuses on application-specific replacement parts that follow the original exhaust layout. For BMW 328i, BMW 428i, and BMW 428i xDrive rear converter service, this part number 643169 provides a direct-fit format for the listed vehicles.

Key Features

• Federal / EPA direct-fit undercar catalytic converter
• Rear position replacement for listed BMW applications
• Flange inlet and pipe outlet connection style
• Non-CARB certified
• Direct-fit design for OE-style exhaust routing
• Cross-reference: BMW 18307633119

Vehicle Fitment

• Fits 2014-2016 BMW 428i, rear, SULEV emissions; direct fit converter
• Fits 2016 BMW 428i Gran Coupe, rear, SULEV emissions; direct fit converter
• Fits 2014-2016 BMW 428i xDrive, rear, SULEV emissions; direct fit converter
• Fits 2016 BMW 428i xDrive Gran Coupe, rear, SULEV emissions; direct fit converter
• Fits 2012 BMW 328i, rear, SULEV emissions; direct fit converter

What It Helps Address

• Failed catalytic converter emissions testing
• Check engine light concerns related to catalyst efficiency
• Exhaust restriction from a worn or damaged converter
• Rattling or deteriorated converter substrate
• Replacement needs on rear SULEV-equipped BMW exhaust systems

Installation Notes

Verify the vehicle’s emissions configuration, rear converter location, and connection style before installation. This part number 643169 is listed for rear-position BMW applications only, so match the year, model, and SULEV notes exactly to the vehicle being serviced.

Quality Assurance

AP Exhaust Direct Fit Converter parts are built for application-specific exhaust replacement and are identified here by the listed Federal / EPA direct-fit undercar configuration. Confirm fitment against the vehicle’s emissions label and OE reference before installation.