Walker 31688 Exhaust Pipe Flange Gasket

Exhaust Pipe Flange Gasket for OE-Style Repairs

Walker 31688 is an exhaust pipe flange gasket built for sealing repairs at 3-bolt exhaust connections. It uses perforated metal with a fiber core and metal fire ring to support a tight seal between mating exhaust components. This gasket is a direct-fit style option for a range of Nissan and INFINITI applications, including 370Z, 350Z, G35, G37, Q50, Q60, Q70, Q70L, QX70, M35, M37, FX35, and Spark exhaust service points.

• 3-bolt exhaust pipe flange gasket design
• Perforated metal construction with fiber core and metal fire ring
• Port size: 2.250 in. x 2.250 in.
• Bolt hole center spacing: 2.75 in. and 3 in.
• Bolt hole diameter: 0.5 in.
• Thickness: 0.051 in.
• Walker part number 31688 for exhaust sealing service

Detailed Product Overview

Walker 31688 is designed for exhaust flange sealing where a 3-bolt gasket is required. The perforated metal face, fiber core, and metal fire ring work together to help maintain a secure seal at the flange joint under exhaust heat and vibration. This makes it a practical choice for exhaust pipe flange gasket replacement on vehicles such as the Nissan 370Z, Nissan 350Z, and INFINITI G37 when servicing OE exhaust components or Walker aftermarket replacement parts. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Repair Uses

• Exhaust leak at a flange connection
• Noise from a damaged or deteriorated gasket
• Soot marks around the exhaust joint
• Loss of sealing after exhaust service
• Replacement during converter or pipe repair on select applications

Installation Notes and Tips

Verify the flange pattern, bolt hole 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 pitting that could affect sealing. Confirm the application matches the vehicle and exhaust position listed for your repair, including 2013-2015 Chevrolet Spark manifold converter to converter service and the listed Nissan and INFINITI models.

Quality Assurance

Walker gaskets and flanges are offered in multiple styles and sizes to work with OE exhaust components and Walker aftermarket replacement parts. Walker 31688 is built as an exhaust sealing component for service work where accurate flange fitment and heat-resistant sealing materials matter.