Eastern Convertors 50526 Catalytic Converter - Rear

Direct-Fit Catalytic Converter for Buick Regal

Eastern Convertors 50526 is a Federal / EPA direct-fit rear catalytic converter built for the 2011 Buick Regal, undercar. It is engineered to match OE dimensions and fitment for a straightforward replacement on the rear exhaust position.

The DIRECT FIT product line focuses on application-specific exhaust fitment, using advanced manufacturing methods to maintain consistent dimensions and efficient production. For buyers searching for a 2011 Buick Regal rear catalytic converter or an OE-style undercar replacement, this part number 50526 is built for that exact application.

Key Features

• Federal / EPA direct-fit undercar catalytic converter
• Fits 2011 Buick Regal, rear
• 3-bolt welded inlet and 2-bolt welded outlet
• Standard catalyst type
• 38-inch overall length
• No O2 sensor ports
• Built to OE dimensions for fitment consistency
• Uses proprietary NANO substrate chemistry for efficient catalyst loading

Detailed Product Overview

Eastern Convertors part number 50526 is a rear catalytic converter for the 2011 Buick Regal with an undercar configuration. It is a Federal / EPA direct-fit unit, making it a practical choice for replacing a worn or restricted converter while maintaining the original exhaust layout. The DIRECT FIT line is produced with automated workstations, spinner welding equipment, and high-speed manufacturing processes to help keep dimensions aligned with OE requirements.

The converter uses a standard catalyst design and does not include O2 sensor ports. Inlet and outlet connections are welded in place, with a 3-bolt welded inlet and 2-bolt welded outlet. This makes it a focused replacement for the specified Buick Regal rear exhaust application, and part number 50526 is the reference to use when matching the correct unit.

Common Problems This Part Can Address

• Failed emissions testing caused by a restricted or inefficient rear converter
• Check engine light conditions related to catalytic converter performance
• Exhaust flow loss from a damaged or deteriorated converter core
• Rattling or internal breakage inside the converter housing
• Fitment issues when replacing the original rear undercar converter on a 2011 Buick Regal

Installation Notes and Tips

Verify the vehicle is a 2011 Buick Regal with the rear undercar converter configuration before ordering. This part uses welded inlet and outlet connections, so the existing exhaust setup should be inspected for flange condition and alignment before installation. Because there are no O2 sensor ports on this converter, confirm the vehicle’s sensor placement matches the original exhaust design. For best results, compare the original converter dimensions and connection style to Eastern Convertors 50526 before installation.

Quality Assurance

Eastern Convertors uses automated production methods and OE-dimension manufacturing controls to support consistent fitment and repeatable build quality. The DIRECT FIT line is designed around application-specific exhaust replacement, and the NANO substrate chemistry is used to improve catalyst efficiency through higher loading performance.