AP Exhaust 700394 Exhaust Muffler

AP Exhaust 700394 Muffler for Toyota 4Runner

AP Exhaust 700394 is a direct-fit exhaust muffler for select Toyota 4Runner applications. It uses an oval, baffled design with OE-comparable sound level and aluminized steel construction for a factory-style replacement on the listed vehicles.

Key Features

• Direct-fit exhaust muffler for select Toyota 4Runner models
• AP Exhaust part number 700394
• Oval muffler body with baffled internal configuration
• Aluminized steel body material
• Center upper 2.25 in. inlet and right center 2.25 in. outlet
• OE comparable sound level
• MSL series replacement muffler
• Fits Federal, California, and except-California applications as listed

Product Details

This AP Exhaust 700394 muffler is built for direct replacement service on Toyota 4Runner exhaust systems listed in the fitment data. The 21 in. body length, 11 in. body width, and 4.5 in. body height support a compact oval profile, while the 31.25 in. overall length and flange outlet help match the original exhaust layout. The baffled muffler design is aimed at maintaining an OE comparable sound level without changing the vehicle’s exhaust routing beyond the confirmed application.

Compatible With 2001-2002 Toyota 4Runner, N/A, and 1996-2000 Toyota 4Runner, N/A, plus 1999-2000 Toyota 4Runner, N/A for California applications. AP Exhaust 700394 is a practical replacement choice when servicing a Toyota 4Runner exhaust system that needs a direct-fit muffler in the MSL series.

Common Issues This Part May Address

• Exhaust noise from a worn or damaged muffler
• Rust-through or corrosion in the muffler body
• Loss of factory-style exhaust tone
• Fitment problems when replacing a direct-fit Toyota 4Runner muffler
• Need for a replacement muffler on a welded OE exhaust assembly

Installation Notes and Tips

Verify the vehicle year, emissions application, and exhaust configuration before installation. This part uses a center upper inlet and right center outlet with a flange outlet type, so alignment with the existing exhaust system is important. For 1996-2000 Toyota 4Runner applications, the OE system was a welded assembly and the listed notes recommend replacing all referenced parts during service. Confirm pipe diameter and mounting orientation against the original muffler before final installation.

Quality Assurance

AP Exhaust manufactures replacement exhaust components for direct-fit service applications. This muffler is built with aluminized steel and an OE comparable sound profile for the listed Toyota 4Runner fitments.