Walker 53911 Exhaust Resonator and Pipe Assembly - Right

Walker 53911 Exhaust Resonator Assembly

Walker 53911 is a steel exhaust resonator and pipe assembly built for OE-style fit, flow, and sound control. It is made for the right side of the exhaust on 2009-2012 GMC Acadia models with dual exhaust, giving buyers a direct replacement option for the original resonator section.

Key Features

• Part number 53911 for the right-side exhaust application
• Fits 2009-2012 GMC Acadia, right, with dual exhaust
• Steel pipe and steel body construction
• Aluminized finish for added corrosion resistance
• One pipe-style inlet and two spout-style outlets
• Overall length: 31 in.; muffler body length: 13.875 in.
• Inlet inside diameter: 2 in.; outlet outside diameter: 2.25 in.

Detailed Description

Walker 53911 is engineered as an exhaust resonator and pipe assembly that follows the original system layout for the 2009-2012 GMC Acadia, right side. The irregular steel body measures 13.875 inches long, 12.75 inches wide, and 4.72 inches high, with a total assembly length of 31 inches. Its tuned resonator design helps maintain OE-style exhaust tone while supporting smooth exhaust flow through the system. This part cross-references AP Exhaust 30029 for the same application.

What It Helps Address

• Exhaust noise that has become louder or harsher than stock
• Damaged or rusted resonator and pipe sections
• Fitment issues when replacing the right-side exhaust assembly on a GMC Acadia
• Restricted exhaust flow caused by a deteriorated resonator section
• Need for an OE-style replacement on dual-exhaust vehicles

Installation Notes and Tips

Fits 2009-2012 GMC Acadia, right, with dual exhaust. If the original system uses a welded assembly, replace all required related parts to complete the repair correctly. Verify inlet and outlet dimensions before installation: 2-inch inlet inside diameter and 2.25-inch outlet outside diameter. Confirm the vehicle’s exhaust configuration matches the listed application before ordering.

Quality Assurance

Walker designs this resonator assembly to match original-system fit, performance, and sound characteristics using precise tuning methods and OE-style construction. The aluminized steel finish and steel body materials support long-term exhaust service in a demanding underbody environment.