Walker 21744 Exhaust Muffler - Left

Walker Quiet-Flow SS Muffler for Subaru Outback

Walker Quiet-Flow SS muffler Part Number 21744 is a specific-fit exhaust muffler built for Subaru Outback applications. It uses 100% stainless-steel construction, an oval body, and an OE-style sound profile to support a direct replacement on listed vehicles.

Key Features

• Walker Quiet-Flow SS line for OE-style exhaust service
• Part Number 21744
• Specific fit for listed Subaru Outback applications
• 100% stainless-steel body material with natural finish
• Reflection muffler design for controlled exhaust flow and sound
• Oval body shape with 23.375-inch overall length
• Single inlet and single outlet configuration
• 2-bolt welded flange inlet with offset inlet configuration
• 1.75-inch outlet outside diameter with tip outlet type

Product Details

The Quiet-Flow SS product line is Walker’s stainless-steel muffler family for drivers who need a direct-fit exhaust replacement with OE-style sound characteristics. This muffler uses a reflection design, a 9-inch body width, 7-inch body height, and 13-inch body length to match the listed Subaru Outback exhaust applications. Part Number 21744 is built for specific fitment rather than universal use, which helps simplify selection for Subaru Outback exhaust repair and replacement work.

This part cross-references Monroe Shocks & Struts (e.g., 229-685, 2103432569) for the same application.

Vehicle Fitment

• Fits 2018-2024 Subaru Outback, N/A
• Fits 2010-2017 Subaru Outback, N/A
• Fits 2010-2015 Subaru Outback, Left

Common Uses

• Replacing a rusted or damaged Subaru Outback muffler
• Restoring exhaust sound levels after muffler failure
• Addressing exhaust leaks at the muffler body or flange connection
• Correcting fitment issues on listed Subaru Outback exhaust applications
• Updating a worn OE-style muffler with stainless-steel construction

Installation Notes

Verify the inlet and outlet configuration before installation: this muffler uses a 2-bolt welded flange inlet, offset inlet placement, and a 1.75-inch outlet. Confirm the vehicle year, model, and position against the fitment list for Subaru Outback applications, including left-side listings where shown. Because this is a specific-fit muffler, it should be matched to the exact exhaust layout on the vehicle.

Quality Assurance

Walker Quiet-Flow SS mufflers are built with 100% stainless-steel construction and are positioned as OE-style replacement parts for domestic and import vehicles. Part Number 21744 is part of Walker’s Quiet-Flow SS line, which emphasizes precision fit, flow characteristics, and controlled exhaust sound.