Walker 31887 Exhaust Flange

Exhaust flange overview

Walker 31887 is a steel exhaust flange built for exhaust system service on select International medium-duty trucks. It uses a 2-bolt design with a 2.50-inch inside diameter and natural finish for a straightforward replacement fit.

For buyers searching for an International exhaust flange 31887, this part supports OE-style exhaust connections where the original flange has worn, warped, or corroded. It is a practical choice for restoring a secure joint in the exhaust path.

Key features

• Steel construction for exhaust system durability
• 2-bolt flange design for common service applications
• 2.50-inch inside diameter for matched pipe connection
• Natural finish
• Walker 31887 replacement flange

Fitment details

• Fits 1991-1993 International 1652SC, N/A, exits in front of rear wheel; with right hand mounting.
• Fits 1991-1993 International 1652SC, N/A, ahead of rear axle; with long tailpipe.
• Fits 1990-1993 International 3700, N/A, exits in front of rear wheel.
• Fits 1990-1993 International 4600, N/A, with right hand mounting.
• Fits 1991-1992 International 1452SC, N/A, exits in front of rear wheel; with right hand mounting.
• Fits 1991-1992 International 1452SC, N/A, ahead of rear axle; with long tailpipe.
• Fits 1990 International 3800, N/A, exits in front of rear wheel.
• Fits 1980 International Cargostar, N/A, except transmission codes 13552.
• Fits 1980 International S1723, N/A, except transmission codes 13552 aux Spicer 4 speed; 152 in. - 276 in. wheelbase.
• Fits 1980 International S1724, N/A, except transmission codes 13552 aux Spicer 4 speed; 152 in. - 276 in. wheelbase.
• Fits 1980 International S1724, N/A, except transmission codes 13552.
• Fits 1980 International S1823, N/A, except transmission codes 13552 aux Spicer 4 speed; 152 in. - 276 in. wheelbase.
• Fits 1980 International S1824, N/A, except transmission codes 13552.
• Fits 1980 International S1824, N/A, except transmission codes 13552 aux Spicer 4 speed; 152 in. - 276 in. wheelbase.
• Fits 1980 International S1924, N/A, except transmission codes 13552.
• Fits 1980 International S1924, N/A, except transmission codes 13552 aux Spicer 4 speed; 152 in. - 276 in. wheelbase.
• Fits 1980 International S1925, N/A, except transmission codes 13552.
• Fits 1980 International S1925, N/A, except transmission codes 13552 aux Spicer 4 speed; 152 in. - 276 in. wheelbase.

What it is used for

• Replacing a cracked or rusted exhaust flange
• Restoring a sealed exhaust joint
• Correcting exhaust leaks at the flange connection
• Servicing worn exhaust connection points on International trucks

Installation notes and tips

Confirm pipe diameter, bolt-hole spacing, and flange dimensions before installation. Match the application notes carefully, especially transmission-code and wheelbase exclusions on 1980 International models. Walker 31887 is an OE-style exhaust component, and the part number 31887 should be verified against the original flange before service.

Quality assurance

Walker states that its OE partnerships and manufacturing capabilities support OE-style fit, appearance, and dependability in emissions control components. This part cross-references Monroe Shocks & Struts (e.g., 15031-1, 15031-10) for the same application.