Walker 21215 Exhaust Muffler - Left

Walker Quiet-Flow SS Muffler for Avalon

Walker Quiet-Flow SS muffler Part Number 21215 is a specific-fit exhaust muffler for select Toyota Avalon models. It uses a stainless-steel body, OE-style sound characteristics, and a precision-fit layout for the left-side application on 2013-2018 Toyota Avalon.

Key Features

• 100% stainless-steel muffler body for corrosion resistance
• Specific fit for the left position on 2013-2018 Toyota Avalon
• Oval muffler body with offset inlet and offset outlet location
• 2-bolt welded flange inlet and tailpipe outlet configuration
• Hanger included for the listed application
• Premium-grade construction with OE-style sound tuning
• Walker Quiet-Flow SS line focuses on fit, flow, and factory-like exhaust tone

Product Details

The Walker Quiet-Flow SS line is built for drivers who want a direct replacement muffler with stainless-steel construction and a factory-oriented sound profile. Part Number 21215 features a 2.120-inch inlet outside diameter, 2.000-inch outlet outside diameter, 16.000-inch body length, 11.000-inch body width, and 5.500-inch body height, with an overall length of 31.390 inches. The oval body, offset inlet, and offset outlet layout support the original exhaust routing on the left side of the Toyota Avalon. This part cross-references Monroe Shocks & Struts (e.g., 174400P080) for the same application.

Common Exhaust Issues It Can Address

• Rust or corrosion in the original muffler body
• Exhaust noise caused by a worn internal muffler core
• Poor fitment after a previous exhaust repair
• Factory exhaust tone that has become louder over time
• Damage to the original left-side muffler assembly

Installation Notes

Fits 2013-2018 Toyota Avalon, left. Verify inlet and outlet orientation, flange style, and overall length before installation. The welded 2-bolt flange and hanger-included design support a direct replacement on the listed vehicle application. Confirm exhaust alignment and tailpipe connection points during installation to maintain proper fit and sealing.

Quality Assurance

Walker Quiet-Flow SS mufflers are built with stainless-steel construction and application-specific dimensions to support consistent fit and OE-style exhaust sound on the listed Toyota Avalon models.