Mahle F31877 Exhaust Pipe Flange Gasket

Mahle Catalytic Converter Gasket F31877

Mahle F31877 is an OEM-standard exhaust pipe flange gasket built with steel construction for a secure seal at the catalytic converter connection. It is a direct-fit style replacement for a wide range of Honda, Acura, Nissan, and INFINITI applications, including rear, outlet, front, and rearward flange locations.

Mahle’s catalytic converter gasket line focuses on dependable sealing performance for exhaust joints where heat and vibration can cause leaks over time. This part number, F31877, is used in many long-tail fitment searches such as rear catalytic converter gasket for 2017-2020 Honda Accord, rear exhaust pipe flange gasket for 2018-2020 Acura MDX, and outlet gasket for 2019-2020 Honda Passport.

Key Features

• Steel exhaust gasket material for high-temperature sealing
• OEM standard item grade for factory-style replacement
• Designed for catalytic converter and exhaust pipe flange applications
• Fits multiple rear, outlet, front, and rearward positions
• Brand line: Mahle Catalytic Converter Gasket
• Cross-reference part numbers include FEL-PRO 61338 and Honda 18393-SDB-A00 for the same application

Detailed Description

Mahle F31877 is an exhaust pipe flange gasket used to seal the joint between exhaust components and help maintain proper exhaust flow. The steel construction supports a tight seal in demanding exhaust environments, and the OEM-standard grade makes it a practical replacement for service work on vehicles such as Honda Accord, Honda Civic, Acura RDX, and Acura MDX. This part is also listed across additional applications including Honda Odyssey, Honda Pilot, Honda Ridgeline, Nissan Quest, Nissan Maxima, Nissan Murano, and INFINITI I35.

For buyers searching by vehicle, this gasket covers applications such as Fits 2017-2020 Honda Accord, rear; Fits 2018-2020 Acura MDX, rear; and Fits 2003-2007 Nissan Murano, N/A. The Mahle F31877 part number is also useful when matching OE-style exhaust sealing components across multiple model years.

What It Helps Fix

• Exhaust leaks at the catalytic converter or flange joint
• Noise from a leaking exhaust connection
• Soot or odor around the exhaust sealing surface
• Loss of sealing after gasket wear or heat cycling
• Service replacement for damaged exhaust pipe flange seals

Installation Notes and Tips

Confirm the flange style, position, and model year before installation. Clean both mating surfaces thoroughly so the steel gasket can seat evenly, and inspect the flange for warping, corrosion, or damage that could prevent a proper seal. Verify the application against the vehicle’s exhaust layout, especially on Honda and Acura rear or outlet positions where multiple gasket styles may appear across different years.

Quality Assurance

Mahle gaskets are used in OEM-style sealing applications and are trusted by technicians for exhaust service work. This part is built to OE-standard expectations for fit and sealing performance in the listed applications.