AP Exhaust 771161 Catalytic Converter with Integrated Exhaust Manifold - Rear

Overview of AP Exhaust Catalytic Converter 771161

The AP Exhaust catalytic converter with integrated exhaust manifold, part number 771161, is designed specifically for BMW 128i, 328i, and 328xi models. This direct-fit, carb compliant manifold ensures proper emission control and exhaust flow for these vehicles.

• Executive Order: D-798-9 compliant
• Includes 3 inlet gaskets and 1 outlet gasket for secure sealing
• Features an 8-bolt welded manifold inlet and 2-bolt welded flange outlet
• Equipped with 2 O2 sensor ports for accurate emissions monitoring
• Overall length of 22.5 inches for precise fitment
• Ceramic substrate material for effective catalytic conversion
• Carb compliant direct-fit manifold design

About the 7BMXB03.0N52 Product Line

The 7BMXB03.0N52 product line from AP Exhaust focuses on integrated catalytic converters with exhaust manifolds tailored for BMW vehicles. This line emphasizes direct-fit solutions that meet strict emissions standards, such as Executive Order D-798-9, ensuring compatibility and regulatory compliance for specific BMW models including the 128i, 328i, and 328xi.

Detailed Product Description

This catalytic converter with integrated exhaust manifold is engineered to replace the factory component on select BMW models. The 8-bolt welded manifold inlet and 2-bolt welded flange outlet provide a secure and leak-free connection to the exhaust system. The ceramic substrate inside the converter facilitates efficient catalytic reactions to reduce harmful emissions. Two O2 sensor ports allow for proper sensor placement, maintaining engine performance and emissions control. The included inlet and outlet gaskets ensure a tight seal during installation. With an overall length of 22.5 inches, this part is designed for a precise fit without modification.

Common Applications and Issues Addressed

• Replacement for damaged or clogged catalytic converters on BMW 128i, 328i, and 328xi
• Restores proper exhaust flow and reduces emissions to meet regulatory standards
• Fixes exhaust leaks caused by manifold or gasket failure
• Supports accurate O2 sensor readings for engine management systems
• Helps resolve check engine light issues related to catalytic converter performance

Installation Notes and Tips

Ensure the vehicle is cooled down before beginning installation. Verify that the O2 sensors are properly disconnected and reinstalled in the designated ports. Use the supplied inlet and outlet gaskets to prevent exhaust leaks. Tighten all bolts to manufacturer torque specifications, especially the 8-bolt manifold inlet and 2-bolt flange outlet connections. This part is designed as a direct-fit replacement for the specified BMW models, minimizing the need for modifications.

Quality Assurance and Compliance

This AP Exhaust catalytic converter with integrated manifold is issued under Executive Order D-798-9, confirming its compliance with emissions regulations. Manufactured by AP Exhaust Holdings, LLC, the part meets OEM standards for fit and function. While no specific warranty information is provided, the product is built to maintain emissions control and durability consistent with factory requirements.