AP Exhaust 700346 Exhaust Muffler

AP Exhaust 700346 Muffler for Expedition and Navigator

AP Exhaust 700346 is a direct-fit exhaust muffler for select 1999-2002 Ford Expedition and 1999-2002 Lincoln Navigator applications. It uses an aluminized steel body with an oval shape and OE-comparable sound level for a factory-style exhaust repair.

Key Features

• Direct-fit muffler for select Ford Expedition and Lincoln Navigator models
• Aluminized steel body for everyday exhaust service
• Oval muffler design with baffled construction
• 2.5 inch inlet and 2.5 inch outlet pipe connections
• Left lower inlet and right upper outlet layout
• OE comparable sound level for a stock-like exhaust tone
• AP Exhaust part number 700346

Product Details

This AP Exhaust 700346 muffler is part of the MSL series and is built as a regular-grade replacement for vehicles that need a direct-fit exhaust solution. The baffled muffler configuration, 20 inch body length, 7 inch body height, and 9 inch body width support a factory-style fit in the exhaust system. With a 24.5 inch overall length and pipe-style inlet and outlet connections, it is suited for repair work on the Ford Expedition and Lincoln Navigator platforms listed below. AP Exhaust 700346 is a practical choice when replacing a worn muffler on 1999-2002 Ford Expedition or 1999-2002 Lincoln Navigator models.

Vehicle Fitment

• Fits 1999-2002 Ford Expedition, N/A. Direct fit MSL/Maximum muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
• Fits 1999-2002 Lincoln Navigator, N/A. Direct fit MSL/Maximum muffler.

Common Issues This Muffler Can Address

• Rust-through or corrosion in the original muffler body
• Excessive exhaust noise from a damaged muffler
• Restricted exhaust flow caused by internal muffler failure
• Fitment problems when replacing a welded OE muffler assembly
• Factory exhaust tone that no longer matches the original sound level

Installation Notes

Verify inlet and outlet orientation before installation: left lower inlet and right upper outlet. This part uses 2.5 inch pipe connections and is listed as a direct-fit replacement for the specified Ford Expedition and Lincoln Navigator applications. Because the OE system was a welded assembly on some Expedition applications, related exhaust components noted in the fitment notes should be inspected and replaced as needed during service.

Quality Assurance

AP Exhaust manufactures replacement exhaust components for service applications, and this muffler is built with aluminized steel construction and OE-comparable sound characteristics for the listed vehicles. Part number 700346 identifies the exact application-specific muffler in the AP Exhaust MSL series.