Walker 18949 Exhaust Muffler - Right

Walker SoundFX Direct Fit Muffler for Impala

Walker SoundFX Direct Fit muffler Part Number 18949 is a specific-fit exhaust muffler for the rear right position on select Chevrolet Impala models. It is built with aluminized steel for improved service life versus low-carbon steel and is shaped to match the original exhaust layout for a cleaner replacement.

Compatible with 2006-2011 Chevrolet Impala, right side, this muffler is a practical choice for drivers looking for a direct-fit exhaust replacement with controlled acoustics and OE-style fitment. The Walker SoundFX Direct Fit line focuses on replacement parts that align with factory routing and appearance.

Key Features

• Specific-fit exhaust muffler for select Chevrolet Impala applications
• Oval body design with offset inlet and offset outlet configuration
• 100% aluminized steel construction for added corrosion resistance compared with low-carbon steel
• Mechanical interior joints and spun-locked heads for added durability
• Single inlet, single outlet layout with pipe connection inlet and tip-style outlet
• Walker SoundFX Direct Fit product line for OE-style replacement fitment

Detailed Description

Walker 18949 is a combination-style exhaust muffler engineered for direct replacement on 2006-2011 Chevrolet Impala right-side applications. It measures 32.5 inches overall, with a 14-inch body length, 9-inch body width, and 7-inch body height. The muffler uses a 1.875-inch inlet inside diameter and a 2.25-inch outlet outside diameter, with an offset inlet and offset outlet arrangement to match the vehicle’s exhaust routing.

The SoundFX Direct Fit line is built for buyers who want a replacement muffler that follows factory-style dimensions and acoustics without unnecessary modification. If your 2006-2011 Chevrolet Impala has a welded assembly, replace all required parts during service to maintain proper exhaust alignment. This part cross-references AP Exhaust 700451 for the same application. Walker 18949 is a direct-fit solution for Chevrolet Impala exhaust repair where fitment accuracy and durable steel construction matter.

Common Repair Uses

• Replacing a rusted or perforated rear muffler
• Restoring exhaust flow after a damaged welded assembly
• Addressing exhaust noise from a failing muffler body or internal baffles
• Correcting fitment issues caused by a bent or misaligned rear exhaust section
• Returning a 2006-2011 Chevrolet Impala, right-side exhaust system to factory-style routing

Installation Notes and Tips

Verify the vehicle’s right-side exhaust configuration before ordering. This muffler is not reversible and is not tunable, so inlet and outlet orientation must match the existing system. Because the inlet uses a pipe connection and the outlet uses a tip-style connection, confirm the pipe diameters and offset layout against the original part before installation.

For welded assemblies, inspect the surrounding exhaust components and replace all required parts at the same time to avoid alignment problems. Proper hanger condition, pipe condition, and clearance around the body and rear suspension should be checked during installation.

Quality Assurance

Walker SoundFX Direct Fit mufflers are built with aluminized steel, mechanical interior joints, and spun-locked heads to support long-term durability in exhaust service. The design is intended to provide a quality appearance and consistent acoustics for direct replacement use on the specified Chevrolet Impala applications.