AP Exhaust 700470 Exhaust Muffler - Front

AP Exhaust 700470 Muffler Overview

AP Exhaust 700470 is a direct-fit exhaust muffler for select Buick LaCrosse and Buick Allure front applications. It uses a round aluminized steel body with a baffled muffler design and OE-comparable sound level for a factory-style exhaust repair.

• Part number: 700470
• Round muffler with 5-inch body diameter and 22-inch body length
• Aluminized steel construction for everyday exhaust service
• Baffled muffler type with C/CR configuration
• Center inlet and center outlet layout
• 2.25-inch inlet and 2.25-inch outlet sizing
• OE-comparable sound level
• AP Exhaust MSL series

Fitment Details

Fits 2005-2009 Buick LaCrosse, front. Fits 2005-2007 Buick Allure, front. These applications note a direct-fit MSL/Maximum muffler replacement for a welded OE exhaust assembly, making AP Exhaust 700470 a practical choice for front exhaust service on these vehicles.

For search relevance, this muffler is commonly referenced as a Buick LaCrosse front muffler replacement and a Buick Allure front muffler replacement. The AP Exhaust 700470 part number is also useful when matching the correct center-inlet, center-outlet exhaust muffler configuration.

What This Muffler Helps Address

• Exhaust noise from a worn or damaged muffler
• Rust-related failure in the original welded muffler assembly
• Loss of factory-style exhaust tone
• Fitment issues when replacing a direct-fit front muffler on Buick LaCrosse or Buick Allure
• Need for a 2.25-inch inlet and outlet muffler replacement

Installation Notes

Verify the vehicle’s front exhaust layout before installation, since the OE system was a welded assembly on the listed applications. Match the center inlet, center outlet, flange inlet type, and 2.25-inch connection sizes to the existing exhaust configuration. Because this is a direct-fit muffler for specific Buick models, confirming the original routing and mounting points before removal helps streamline the repair.

Quality Assurance

AP Exhaust manufactures this muffler as part of its MSL series for OE-style exhaust replacement service. The aluminized steel body and baffled construction support routine exhaust repair needs on the listed Buick applications.