Walker 31657 Exhaust Pipe Flange Gasket

Walker 31657 Exhaust Pipe Flange Gasket

Walker 31657 is a donut-style exhaust pipe flange gasket built for sealing exhaust connections with a high-temperature graphite material and wire mesh core. It is sized with a 2.5-inch inside diameter, 3.5-inch outside diameter, and 0.97-inch thickness for a precise exhaust repair fit.

Compatible with select Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Tahoe, GMC Yukon, and GMC Yukon XL applications, this gasket is made to work with OE exhaust components and Walker aftermarket replacement parts. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Key Features

• Donut-style exhaust pipe flange gasket
• High-temperature graphite construction with wire mesh core
• 2.5-inch inside diameter for exhaust pipe sealing
• 3.5-inch outside diameter and 0.97-inch thickness
• Built for OE exhaust components and Walker replacement parts
• Walker 31657 exhaust gasket for repair and replacement use

Detailed Description

Walker 31657 is an exhaust pipe flange gasket designed to seal the joint between exhaust components and help restore a tight connection after service. The graphite-and-wire-mesh construction is selected for high-heat exhaust environments, while the donut profile supports a secure seal at the flange connection. For buyers searching for a Walker exhaust pipe flange gasket 2.5 inch, this part number provides a direct replacement option for a range of GM truck and SUV applications, including Chevrolet Silverado 1500 and GMC Sierra 1500 models.

Fits 2014-2018 Chevrolet Silverado 1500, N/A; Fits 2014-2018 GMC Sierra 1500, N/A; Fits 2015-2017 Chevrolet Tahoe, N/A; Fits 2015-2017 GMC Yukon, N/A; Fits 2015-2019 GMC Yukon XL, N/A.

What It Helps Fix

• Exhaust leaks at the flange connection
• Noise from a worn or damaged exhaust seal
• Soot marks around the exhaust joint
• Loss of sealing after exhaust service
• Fitment issues when replacing a flange gasket on GM trucks and SUVs

Installation Notes and Tips

Confirm the gasket dimensions before installation: 2.5-inch inside diameter, 3.5-inch outside diameter, and 0.97-inch thickness. Inspect the mating flange surfaces for warping, corrosion, or debris before assembly, and replace damaged exhaust hardware or components as needed for a proper seal. This Walker 31657 gasket is also listed for 2002-2009 Chevrolet Trailblazer, GMC Envoy, Buick Rainier, Isuzu Ascender, and Oldsmobile Bravada applications, including select models with suspension-related notes.

Quality Assurance

Walker supplies exhaust sealing components intended to work with OE exhaust systems and Walker aftermarket replacement parts, giving technicians and DIY buyers a direct-fit repair option for exhaust flange service.