Walker 31801 Exhaust Flange

Walker 31801 Exhaust Flange for Ford Trucks

Walker 31801 is a steel 2-bolt exhaust flange built for OE-style exhaust repairs on classic Ford trucks. With a 2.30 inside diameter, 3.25 bolt hole center spacing, and natural finish, it supports a precise exhaust connection where the flange meets the rest of the system.

Compatible with 1965-1975 Ford F-100, Ford F-150, Ford F-250, and Ford F-350 applications listed below, this Walker exhaust flange is a direct-fit replacement for common exhaust service needs. The Walker 31801 part number is also cross-referenced to Anchor 8031 for the same application.

Key Features

• Steel construction for exhaust system durability
• 2-bolt flange design
• 2.30 inside diameter
• 3.25 bolt hole center to bolt hole center
• 4.5 flange length and 3.5 flange width
• 0.42 flange thickness
• Natural finish
• OE-style replacement from Walker

Detailed Description

Walker 31801 is an exhaust flange for repair and replacement work on Ford truck exhaust systems. It is built from steel with a natural finish and sized for a 2-bolt connection, making it a practical choice when restoring a secure exhaust joint on 1965-1972 Ford F-250, 1970-1974 Ford F-100, 1974 Ford F-250 before serial # V80001 with 133-inch wheelbase, and 1975 Ford F-150, F-250, and F-350 before serial # V80001. Walker’s OE-focused manufacturing approach supports consistent fit and dependable replacement performance across domestic vehicle applications. Part number 31801 is a useful reference when sourcing the correct exhaust flange for these Ford truck platforms.

What It Helps Fix

• Leaking exhaust joints at the flange connection
• Damaged or rusted original exhaust flange surfaces
• Loose exhaust connections caused by worn mounting points
• Service issues during exhaust pipe or muffler replacement
• Fitment problems when restoring factory-style exhaust routing on Ford trucks

Installation Notes and Tips

Verify flange dimensions, bolt spacing, and inside diameter against the existing exhaust connection before installation. Confirm vehicle details carefully for 1974 Ford F-250 and 1975 Ford F-250/F-350 applications that require serial-number-specific fitment. Clean mating surfaces before assembly to help achieve a proper seal and secure connection.

Quality Assurance

Walker develops replacement emissions control components with OE-style fit, appearance, and dependability in mind. The brand’s global OE partnerships and manufacturing experience support consistent aftermarket exhaust service parts for domestic and import vehicles.