Walker 21746 Exhaust Muffler - Left

Walker Quiet-Flow SS 21746 Muffler Overview

Walker Quiet-Flow SS 21746 is a specific-fit exhaust muffler built with 100% stainless-steel construction for corrosion resistance and long-term service. It uses an oval body, offset inlet and outlet layout, and OE-style sound characteristics for a direct replacement on select Subaru applications.

Compatible with 2009-2013 Subaru Forester, left, and 2008-2011 Subaru Impreza, left, this muffler is a fitment-focused option for drivers replacing a worn rear exhaust component. The Walker Quiet-Flow SS 21746 also cross-references AP Exhaust 20055 for the same application.

Key Features

• Walker Quiet-Flow SS brand line with stainless-steel body construction
• Specific-fit muffler for select Subaru Forester and Subaru Impreza applications
• Reflection muffler type for OE-style exhaust sound control
• Oval body shape with natural finish
• Offset inlet and offset outlet configuration
• 2-bolt welded flange inlet for direct exhaust connection
• 2.75-inch outlet outside diameter with tip outlet design
• Part number 21746 for application-specific lookup

Quiet-Flow SS Product Line

Walker Quiet-Flow SS mufflers are positioned as stainless-steel replacement mufflers for domestic and import vehicles. The line focuses on precision fit, steady exhaust flow, and sound characteristics that stay close to OE expectations, making it a practical choice when replacing a factory muffler on a Subaru Forester or Subaru Impreza.

Detailed Description

Walker 21746 is an exhaust muffler with a 22.75-inch overall length, 13-inch body length, 9-inch body width, and 7-inch body height. The stainless-steel body and natural finish support durability in demanding exhaust environments, while the reflection-style internal design helps manage exhaust tone without changing the vehicle’s basic sound profile. With one inlet and one outlet, this muffler is built for the left-side position on confirmed Subaru fitments.

For buyers searching for a Subaru Forester muffler replacement or a Subaru Impreza left muffler replacement, part number 21746 provides a direct-fit solution with application-specific dimensions and flange configuration. It is also a strong match for shoppers comparing Walker Quiet-Flow SS 21746 against AP Exhaust 20055.

Common Problems This Muffler Can Address

• Rust-through or corrosion in the original muffler body
• Exhaust noise caused by a damaged internal muffler structure
• Leaks at the muffler connection point
• Loss of OE-style exhaust tone after factory muffler wear
• Fitment issues from using a universal replacement on a specific application

Installation Notes and Tips

Confirm left-side placement before installation and match the 2-bolt welded flange inlet, offset inlet configuration, and 2.75-inch outlet dimensions to the existing exhaust layout. Verify clearance around the oval body and compare overall length and body dimensions to the original muffler before final assembly. Professional exhaust installation is recommended for proper alignment and sealing.

Quality Assurance

Walker Quiet-Flow SS mufflers are built with 100% stainless-steel construction and are engineered for precision fit and OE-style sound control. This part is listed with limited lifetime warranty coverage in the fitment notes for the confirmed Subaru applications.