Walker 21823 Exhaust Muffler

Walker Quiet-Flow Muffler for Outlander

Walker Quiet-Flow Part Number 21823 is a specific-fit exhaust muffler for the 2008-2013 Mitsubishi Outlander. It is built with an oval steel body and aluminized finish to support OE-style exhaust tone and steady flow in a direct-fit replacement format.

The Quiet-Flow line focuses on controlled sound and practical fitment for domestic and foreign vehicles. For Mitsubishi Outlander owners looking for a replacement muffler with a factory-like sound profile, Walker 21823 provides a vehicle-specific solution backed by Walker’s limited lifetime warranty and 90-day Safe and Sound guarantee.

Key Features

• Specific-fit exhaust muffler for 2008-2013 Mitsubishi Outlander
• Oval muffler body with steel construction
• Aluminized finish for added corrosion resistance
• 2-bolt welded flange inlet, body-side configuration
• Single outlet with 2.75-inch outside diameter and tip outlet design
• Combination muffler type for OE-style exhaust sound and flow
• Walker Quiet-Flow Part Number 21823

Product Details

Walker 21823 is engineered as a replacement exhaust muffler for the Mitsubishi Outlander, covering 2008-2013 model years. The oval body measures 19.5 inches in body length, 10.625 inches in body width, and 7.125 inches in body height, with an overall length of 28.875 inches. The inlet uses a 2-bolt welded flange at the body side, while the outlet is offset with a 2.75-inch outside diameter and tip-style outlet configuration.

This Quiet-Flow muffler is a practical choice for drivers who need a direct replacement that maintains a controlled exhaust note without changing the vehicle’s original character. Walker 21823 is also referenced by part numbers 1571A713, 1571A903, 1571B061, 1571B071, and 1571B077 for the same application.

What It Helps Address

• Exhaust noise from a worn or damaged muffler
• Rust-related muffler deterioration on the original exhaust system
• Loss of factory-like exhaust tone
• Restricted exhaust flow caused by internal muffler wear
• Fitment issues when replacing the original Mitsubishi Outlander muffler

Installation Notes

Compatible With 2008-2013 Mitsubishi Outlander, N/A. Verify inlet and outlet configuration, overall length, and flange style before installation to confirm alignment with the existing exhaust system. Because this is a specific-fit muffler, matching the vehicle’s original exhaust routing is important for proper installation.

Quality Assurance

Walker Quiet-Flow mufflers are backed by Walker’s limited lifetime warranty and a 90-day Safe and Sound guarantee. The Quiet-Flow line is built to deliver OE-style sound and dependable flow for replacement exhaust service.