Walker 46748 Exhaust Muffler Assembly

Walker Quiet-Flow Muffler Assembly for BMW

Walker Quiet-Flow 46748 is a direct-fit exhaust muffler assembly built for OE-style replacement on select BMW 325i, 325is, and 325iX applications. It combines a precision-fit design with aluminized steel construction and a tuned sound profile for a factory-style exhaust note.

Key Features

• Direct-fit exhaust muffler assembly for select BMW applications
• Aluminized finish for added corrosion resistance
• Steel body and steel muffler construction
• Oval muffler shape with combination muffler design
• Offset inlet and offset outlet configuration
• Dual-tip outlet layout for the rear exhaust section
• 2-bolt loose flange inlet type for OE-style connection points
• Walker Quiet-Flow line focuses on precision fit, flow, and OE-style sound

Product Details

Walker Quiet-Flow 46748 is engineered as an OE-style replacement muffler assembly for 1987-1991 BMW 325i, 1987-1991 BMW 325is, and 1988-1991 BMW 325iX. The oval steel body measures 19.25 inches in body length, 11 inches in body diameter, 11 inches in body width, and 6.5 inches in body height, with an overall length of 71 inches. The assembly uses dual 2-bolt loose flange inlets, an offset inlet configuration, and dual offset outlets with 2.25-inch and 2.5-inch outside diameters at the tips.

This part number, 46748, is part of Walker’s Quiet-Flow product line, which is positioned for drivers who want a direct-fit exhaust replacement with factory-style sound characteristics and consistent fitment. This part cross-references BRExhaust 285-053 and Carlson 7871 for the same application.

Common Exhaust Issues It Can Address

• Rust-through or corrosion in the muffler body
• Exhaust leaks at the muffler connection points
• Excessive exhaust noise from a failing muffler
• Poor fitment from a previous replacement exhaust section
• Loss of OE-style exhaust tone on BMW 325i, 325is, or 325iX models

Installation Notes and Tips

Fits 1987-1991 BMW 325i, N/A; Fits 1987-1991 BMW 325is, N/A; Fits 1988-1991 BMW 325iX, N/A. This muffler assembly requires 36245 for the listed applications. Verify flange alignment, inlet and outlet orientation, and exhaust hanger positioning before final tightening to help ensure proper sealing and fit.

Quality Assurance

Walker Quiet-Flow muffler assemblies are built as direct-fit OE-style replacements with coverage for domestic and foreign vehicles. The Quiet-Flow line is designed around precision fit, superior flow, and OE-style sound for a consistent replacement experience.