Walker 53978 Exhaust Muffler Assembly - Rear

Walker Quiet-Flow SS Muffler Assembly

Walker Quiet-Flow SS 53978 is a direct-fit exhaust muffler assembly built for rear installation on select Jeep Grand Cherokee models. It uses stainless steel construction and an OE-style layout to replace the factory muffler with a fit that follows the original exhaust routing.

For Jeep Grand Cherokee owners looking for a rear muffler replacement, this Walker Quiet-Flow SS assembly combines a pipe connection inlet, offset inlet configuration, and offset tip outlet in a natural stainless finish. The irregular muffler shape and reflection-style design support a factory-style exhaust service part for 2011-2017 and 2018-2019 Jeep Grand Cherokee rear applications.

Key Features

• Walker Quiet-Flow SS brand line direct-fit muffler assembly
• Stainless steel body and muffler material for longer service life than typical aluminized mufflers
• OE-style replacement for rear exhaust service
• Inlet type: pipe connection with 2.5-inch inside diameter
• Outlet type: tip with 3-inch outside diameter
• Offset inlet and offset outlet configuration
• Natural finish with irregular muffler shape
• Part number 53978 for catalog and fitment lookup

Product Details

Walker Quiet-Flow SS 53978 is engineered as a stainless steel exhaust muffler assembly for the rear position on Jeep Grand Cherokee models. The Quiet-Flow SS line focuses on direct-fit OE-style replacement parts, making this muffler a practical choice when restoring factory exhaust routing and replacing a worn or damaged rear muffler. The stainless steel body, 16.25-inch body diameter, 16.75-inch body length, and 29.5-inch overall length reflect a vehicle-specific design rather than a universal fit part. If you are searching for a rear muffler assembly for a 2011-2017 Jeep Grand Cherokee or a 2018-2019 Jeep Grand Cherokee, part number 53978 is the relevant reference.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Fix

• Rust or corrosion in the original rear muffler assembly
• Exhaust noise caused by a damaged or failing muffler
• Fitment issues from a previous non-OE-style exhaust repair
• Loss of factory-style exhaust routing at the rear of the vehicle
• Need for a stainless steel replacement on a Jeep Grand Cherokee rear exhaust system

Installation Notes and Tips

Compatible With 2018-2019 Jeep Grand Cherokee, rear, and 2011-2017 Jeep Grand Cherokee, rear. Verify inlet and outlet orientation before installation, since this assembly uses an offset inlet and offset outlet configuration. If the existing exhaust is a welded assembly, replace all required related parts during service to ensure proper alignment and sealing. Confirm the 2.5-inch inlet connection and 3-inch tip outlet match the vehicle’s exhaust layout before final installation.

Quality Assurance

Walker Quiet-Flow SS muffler assemblies are built with stainless steel construction and OE-style fitment for domestic and foreign vehicles. Part number 53978 is part of Walker’s Quiet-Flow SS line, which is positioned as a longer-life alternative to typical aluminized mufflers.