Walker 21567 Exhaust Muffler

Walker Quiet-Flow SS Muffler for Grand Prix

Walker Quiet-Flow SS muffler Part Number 21567 is a direct-fit exhaust muffler built for specific applications and engineered for OE-style sound control with improved exhaust flow. It is a fitment-based replacement for 2005-2008 Pontiac Grand Prix Premium models with single exhaust, and it uses a 2.25-inch pipe connection with offset inlet and outlet configuration.

The Quiet-Flow SS product line focuses on stainless-steel construction and precision fitment for domestic and import vehicles. For buyers searching for a Pontiac Grand Prix muffler replacement, Walker Quiet-Flow SS 21567 offers a vehicle-specific solution that matches the original exhaust layout more closely than a universal muffler.

Key Features

• Specific-fit exhaust muffler for 2005-2008 Pontiac Grand Prix
• 100% stainless-steel body construction for corrosion resistance
• Oval muffler shape with combination muffler design
• 2.25-inch inlet and 2.25-inch outlet pipe connections
• Offset inlet and offset outlet configuration
• Overall length: 25.75 inches
• Body dimensions: 15 inches long, 11 inches wide, 5.5 inches high
• Aluminized finish

Detailed Description

Walker Quiet-Flow SS 21567 is an exhaust muffler designed for specific vehicle fitment, not a universal application. It is built with a stainless-steel body and shaped as an oval combination muffler to support controlled exhaust tone and steady flow. The 2.25-inch inlet and outlet sizing, along with the offset inlet and outlet layout, make it a direct replacement option for the listed Pontiac Grand Prix applications.

This part is listed for 2005-2008 Pontiac Grand Prix Premium models with single exhaust and requires 36445 for the application noted by the manufacturer. If you are replacing a worn or noisy Pontiac Grand Prix muffler, Part Number 21567 provides a fitment-specific solution that aligns with the Quiet-Flow SS line’s OE-style sound profile and stainless-steel construction.

This part cross-references Monroe Shocks & Struts (e.g., 15791214, 15894107) for the same application.

What This Muffler Helps Address

• Exhaust noise from a damaged or deteriorated muffler
• Rust-related muffler failure on a Pontiac Grand Prix exhaust system
• Loss of factory-style exhaust tone after muffler wear
• Fitment issues caused by using a universal muffler in a specific application
• Restricted exhaust flow from an aging replacement muffler

Installation Notes and Tips

Verify the vehicle is a 2005-2008 Pontiac Grand Prix Premium with single exhaust before ordering. Confirm the 2.25-inch pipe connection size, offset inlet and outlet layout, and the application note that requires 36445. Because this is a specific-fit muffler, matching the original exhaust routing is important for proper installation and alignment.

For search relevance, this Walker Quiet-Flow SS muffler 21567 is a direct-fit Pontiac Grand Prix exhaust muffler replacement for the listed years and configuration.

Quality Assurance

Walker states that Quiet-Flow SS mufflers use 100% stainless-steel construction and are built for precision fit, improved flow, and OE-style sound. The Quiet-Flow SS line is offered for many domestic and import vehicles, and this part number 21567 follows that application-specific design approach.