Walker 31721 Exhaust Pipe Flange Gasket

Exhaust Pipe Flange Gasket for OE-Style Repair

Walker 31721 is an exhaust pipe flange gasket built for sealing repairs at a 3-bolt flange connection. It uses perforated metal with a fiber core and fire ring to help maintain a tight seal between exhaust components on select Chevrolet Malibu, Pontiac G6, and Saturn Aura applications.

Use Walker 31721 when replacing a worn exhaust flange gasket on vehicles that need a direct-fit sealing solution for the exhaust joint. This part is designed to work with OE exhaust components and Walker aftermarket replacement parts.

Key Features

• Part number: 31721
• 3-bolt exhaust pipe flange gasket design
• Perforated metal construction with fiber core and fire ring
• Thickness: 0.058 in.
• Port opening: 2.750 in. x 2.750 in.
• Bolt hole diameter: 0.5 in.
• Bolt hole center spacing: 4.625 in., 4.875 in., and 2.875 in.
• Built for exhaust sealing at flange connections

Detailed Description

Walker 31721 is made for exhaust repair work where the flange seal has deteriorated and exhaust leakage needs to be corrected. The gasket’s perforated metal body, fiber core, and fire ring are selected to support sealing performance at the joint while matching common OE-style exhaust flange dimensions. This makes it a practical choice for service on 2005-2010 Chevrolet Malibu, 2005-2010 Pontiac G6, and 2007-2008 Saturn Aura, including 2008 Saturn Aura with Federal Emission System and 2004 Chevrolet Malibu with Part Number 16437.

This part cross-references 24505057 for the same application. Walker 31721 is a focused replacement for flange sealing in exhaust systems where the original gasket has failed or the joint has begun to leak.

What It Helps Fix

• Exhaust leaks at a 3-bolt flange connection
• Noise caused by a failing exhaust gasket
• Soot or residue around the exhaust joint
• Loss of sealing after flange service or component replacement
• Fitment issues when replacing an OE-style exhaust pipe flange gasket

Installation Notes and Tips

Confirm flange bolt spacing, port size, and bolt hole diameter 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. For 2004 Chevrolet Malibu applications, use with Part Number 16437 as noted in the fitment data.

Quality Assurance

Walker supplies exhaust sealing components in styles and sizes intended to work with OE exhaust parts and Walker replacement systems. That product focus supports consistent fitment selection for repair work on the listed Chevrolet, Pontiac, and Saturn applications.

Compatible Vehicles

• Fits 2005-2010 Chevrolet Malibu, N/A
• Fits 2005-2010 Pontiac G6, N/A
• Fits 2008 Saturn Aura, N/A, with Federal Emission System
• Fits 2007 Saturn Aura, N/A
• Fits 2004 Chevrolet Malibu, N/A, Must Use with Part Number(s) 16437