AP Exhaust 700371 Exhaust Muffler - Rear

AP Exhaust 700371 Rear Muffler for Park Avenue

AP Exhaust 700371 is a rear exhaust muffler built for direct-fit service on select Buick Park Avenue applications from 1997-2005. It uses an oval, baffled design with OE-comparable sound level and aluminized steel construction for a practical replacement on a rear exhaust repair.

Key Features

• Direct-fit rear muffler for 1997-2005 Buick Park Avenue
• AP Exhaust 700371 part number for application matching
• Oval muffler body with baffled internal design
• Aluminized steel body material
• OE-comparable sound level for factory-style exhaust tone
• Single inlet, single outlet pipe configuration
• Inlet: 2.25 in. inside diameter, right center location
• Outlet: 2 in. inside diameter, center location
• Overall length: 20 in.; body dimensions: 16 in. long, 11 in. wide, 4.5 in. high

Product Details

This AP Exhaust muffler is part of the MSL series and is configured as an O/C muffler with one pipe inlet and one pipe outlet. The aluminized steel body is selected for standard exhaust replacement service, while the baffled internal layout supports an OE-style sound profile. For buyers searching for a rear muffler for Buick Park Avenue 1997-2005, AP Exhaust 700371 provides the key dimensions and connection points needed for a direct-fit exhaust repair.

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

Common Repair Uses

• Replacing a rusted or leaking rear muffler on a Buick Park Avenue
• Restoring exhaust flow after a damaged factory muffler assembly
• Addressing excessive exhaust noise from a worn muffler core
• Repairing a rear exhaust section with OE-style sound requirements
• Servicing a welded factory exhaust assembly with a direct-fit replacement

Installation Notes

Compatible With 1997-2005 Buick Park Avenue, rear. The OE system was a welded assembly, and AP Exhaust notes that all referenced parts should be replaced when servicing this application. Verify inlet and outlet diameters, body size, and rear position before installation. Professional exhaust installation is recommended for proper alignment and sealing.

Quality Assurance

AP Exhaust manufactures this muffler as a regular-grade replacement component for exhaust service. The MSL series design, aluminized steel construction, and OE-comparable sound level support a factory-style repair approach for the Buick Park Avenue rear exhaust system.