AP Exhaust 7331 Exhaust Muffler Assembly
OE Quality 60-Day Returns
AP Exhaust

AP Exhaust 7331 Exhaust Muffler Assembly

Brand AP Exhaust 7331
Muffler Material Aluminized steel
Fits Ford and Lincoln · 10 vehicles

Aluminized steel. Resists corrosion for dependable exhaust service.

Muffler assembly. Complete exhaust muffler replacement in one unit.

Cross-references 6L7Z5230AB for the same application. See all 1.

$115.36Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $115.36
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Exhaust Muffler Assembly options

AP Exhaust 7331 Muffler Assembly

AP Exhaust 7331 is an exhaust muffler assembly built with aluminized steel for direct replacement service on select Ford and Lincoln applications. It is listed for welded OE exhaust systems, making it a practical choice when restoring factory-style exhaust routing on Expedition and Navigator models.

Key Features

  • Aluminized steel muffler material for exhaust system service
  • Exhaust muffler assembly for OE-style replacement
  • Fits 2003-2006 Ford Expedition, N/A
  • Fits 2003-2006 Lincoln Navigator, N/A
  • Cross-references Ford OE part number 6L7Z5230AB for the same application
  • Part number 7331 for catalog and fitment lookup

Product Details

This AP Exhaust muffler assembly is intended for vehicles originally equipped with a welded exhaust assembly. The aluminized steel construction is commonly used in exhaust service for corrosion resistance and durability in everyday driving conditions. For buyers searching for a Ford Expedition muffler assembly or Lincoln Navigator exhaust muffler replacement, AP Exhaust 7331 provides a fitment-specific solution that matches the listed OE application.

Use AP Exhaust 7331 when replacing a worn, rusted, or damaged muffler assembly on 2003-2006 Ford Expedition and 2003-2006 Lincoln Navigator models. The part number 7331 is also useful when cross-checking catalog listings and OE interchange references.

What It Helps Address

  • Exhaust noise caused by a damaged muffler assembly
  • Rust or corrosion in the original welded exhaust section
  • Restricted exhaust flow from a deteriorated muffler body
  • Factory exhaust fitment issues on welded OE systems
  • Replacement needs for Ford Expedition and Lincoln Navigator exhaust service

Installation Notes and Tips

Fitment notes specify a welded assembly, and the OE system was also welded. Review the full exhaust layout before installation and replace all noted parts in the affected section when required. Confirm vehicle year, make, and model against the listed applications before ordering. This part fits 2003-2006 Ford Expedition, N/A, and fits 2003-2006 Lincoln Navigator, N/A.

Quality Assurance

AP Exhaust manufactures exhaust components for service replacement applications. Part number 7331 is cataloged as an aluminized steel muffler assembly with OE interchange reference 6L7Z5230AB for the same application.

Related reading

This part fits 10 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2006FordExpedition5.4LV8N/AWelded Assembly; OE system was a welded assembly, recommend replacing all noted parts [1].
2006LincolnNavigator5.4LV8N/AWelded Assembly; OE system was a welded assembly, recommend replacing all noted parts [1].
2005FordExpedition5.4LV8N/AWelded Assembly; OE system was a welded assembly, recommend replacing all noted parts [1].
2005LincolnNavigator5.4LV8N/AWelded Assembly; OE system was a welded assembly, recommend replacing all noted parts [1].
2004FordExpedition4.6LV8N/AWelded Assembly; OE system was a welded assembly, recommend replacing all noted parts [1].
2004FordExpedition5.4LV8N/AWelded Assembly; OE system was a welded assembly, recommend replacing all noted parts [1].
2004LincolnNavigator5.4LV8N/AWelded Assembly; OE system was a welded assembly, recommend replacing all noted parts [1].
2003FordExpedition4.6LV8N/AWelded Assembly; OE system was a welded assembly, recommend replacing all noted parts [1].
2003FordExpedition5.4LV8N/AWelded Assembly; OE system was a welded assembly, recommend replacing all noted parts [1].
2003LincolnNavigator5.4LV8N/AWelded Assembly; OE system was a welded assembly, recommend replacing all noted parts [1].
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
6L7Z5230AB