Walker 31637 Exhaust Pipe Flange Gasket - Front Converter To Rear Converter

Walker 31637 Exhaust Pipe Flange Gasket

Walker 31637 is a 3-bolt exhaust pipe flange gasket built for exhaust repair work where a tight seal matters. It uses high-temperature graphite with a wire mesh core to help maintain sealing performance at the flange connection on select Ford, Mazda, and Mercury applications.

Compatible with OE exhaust components and Walker aftermarket replacement parts, this gasket is a direct-fit sealing solution for front converter to rear converter connections on the listed vehicles. Walker 31637 is a practical choice when servicing a leaking exhaust flange on a Ford Ranger, Ford Explorer, or Mazda B3000/B4000.

Key Features

• Part number: 31637
• 3-bolt exhaust pipe flange gasket design
• High-temperature graphite construction with wire mesh core
• Thickness: 0.051 in.
• Port 1 dimensions: 4.75 in. length x 2.375 in. width
• Bolt hole center spacing: 5.5 in. and 3 in.
• Bolt hole diameter: 0.5 in.
• Works with OE exhaust components and Walker replacement parts

Detailed Description

Walker 31637 is engineered for exhaust flange sealing at the front converter to rear converter connection on select 1999-2006 Ford and Mercury vehicles, plus 2004-2006 Mazda trucks. The graphite sealing material and wire mesh core are selected for high-temperature exhaust service, helping the gasket conform at the flange interface and maintain a secure seal under heat cycling. This makes it a strong match for repair work on a Ford Ranger exhaust flange, Ford Explorer exhaust connection, or Mazda B3000/B4000 exhaust joint.

This part cross-references Monroe Shocks & Struts 172286 and 182286 for the same application.

What It Helps Fix

• Exhaust leaks at the flange connection
• Noise from a leaking front converter to rear converter joint
• Loss of sealing after gasket wear or heat damage
• Service issues during exhaust component replacement
• Fitment problems when replacing a damaged flange gasket on listed Ford, Mazda, or Mercury models

Installation Notes and Tips

Verify flange style, bolt spacing, and port dimensions before installation. Clean both mating surfaces thoroughly so the gasket can seat evenly, and inspect the flange for warping, corrosion, or damage that could affect sealing. Confirm the application is front converter to rear converter on the listed vehicles before ordering Walker 31637.

• Fits 2001-2006 Ford Ranger, Front Converter To Rear Converter
• Fits 2004-2006 Mazda B3000, N/A
• Fits 2004-2006 Mazda B4000, N/A
• Fits 2001-2005 Ford Explorer Sport Trac, Front Converter To Rear Converter
• Fits 2001-2003 Ford Explorer Sport, Front Converter To Rear Converter
• Fits 2001 Ford Explorer, Front Converter To Rear Converter
• Fits 2001 Mercury Mountaineer, Front Converter To Rear Converter
• Fits 2000 Ford Explorer, Front Converter To Rear Converter, After 12/1999
• Fits 1999-2000 Mercury Mountaineer, Front Converter To Rear Converter, After 12/1999

Quality Assurance

Walker designs gaskets and flanges to work with OE exhaust components and Walker aftermarket replacement parts, supporting proper fitment and sealing in exhaust repair applications.