Bosal 145-549 Exhaust Muffler Assembly - Rear

Direct-Fit Muffler Assembly for Altima

Bosal BRExhaust Direct-Fit Exhaust Muffler Assembly 145-549 is built for OE-style exhaust replacement on select Nissan Altima rear applications. It uses a direct-fit layout with a sleeved inlet and tip outlet to support bolt-on installation and factory-like sound control.

For 2002-2006 Nissan Altima rear silencer service, this muffler assembly combines aluminized steel construction with a 16-gauge steel tube design to help resist corrosion while maintaining low backpressure and quiet operation.

Key Features

• Direct-fit exhaust muffler assembly for rear installation
• Fits 2002-2006 Nissan Altima, rear
• Part number 145-549
• Aluminized steel muffler and pipe construction
• Oval muffler shape with 29-inch overall length
• Sleeved inlet with 2-inch inside diameter
• Tip-style outlet for OE-style exhaust routing
• Designed for factory-like sound and reduced exhaust noise

Product Details

The Bosal BRExhaust Direct-Fit Exhaust Muffler Assembly line focuses on OE-style exhaust replacement with direct-fit geometry and materials selected for everyday durability. This product line is built to match the original exhaust layout more closely than universal mufflers, making it a practical choice when replacing a worn rear silencer on a Nissan Altima. Part number 145-549 is formed from aluminized steel with an aluminized finish, and its internal muffler design supports quiet exhaust flow with low backpressure.

Compatible With 2002-2006 Nissan Altima rear exhaust service, this assembly is sized with a 6.25-inch body height, 10.5-inch body width, and 15-inch body length. The oval body profile and direct-fit configuration help maintain the original exhaust path and sound characteristics.

Common Problems This Part Addresses

• Exhaust noise from a rusted or damaged rear muffler
• Corrosion in the rear silencer section
• Loss of factory-like exhaust tone
• Restricted exhaust flow from a deteriorated muffler core
• Fitment issues caused by using a universal replacement muffler

Installation Notes and Tips

This direct-fit muffler assembly is made for bolt-on replacement without modifications to the vehicle exhaust layout. Verify the rear position, inlet diameter, and outlet style against the existing Nissan Altima exhaust before installation. Because the inlet is sleeved and the outlet is tip-style, matching the original routing and hanger locations is important for proper alignment.

Fits 2002-2006 Nissan Altima, rear. Part number 145-549 should be matched to the vehicle’s rear silencer application before installation.

Quality Assurance

Bosal sources this BRExhaust muffler assembly through an OE-supplier manufacturing approach, with aluminized steel construction chosen for corrosion protection and consistent exhaust performance. The direct-fit design supports factory-style replacement on the specified Nissan Altima applications.