Walker 54665 Exhaust Muffler Assembly - Left
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Walker
 Quiet-Flow SS

Walker 54665 Exhaust Muffler Assembly - Left

Brand Walker 54665
Position Left
Inlet Outside Diameter 2
Finish Aluminized
Body Diameter 11
Inlet Type Pipe connection
Outlet Type Tip
Inlet Inside Diameter 2
Body Height 5.5
Body Length 14
Muffler Material Stainless steel
Muffler Shape Oval
Overall Length 30
Body Material Stainless steel
Body Width 11
Grade Type Regular
Inlet 1 Inside Diameter 2
Inlet 1 Outside Diameter 2
Inlet 1 Type Pipe connection
Inlet Configuration Offset
Inlet Quantity 1
Muffler Type Combination
Outlet 1 Outside Diameter 2.25
Outlet 1 Type Tip
Outlet Configuration Offset
Outlet Quantity 1
Shape Oval
Product line Quiet-Flow SS
Fits Ford, Lincoln, and Mercury · 23 vehicles

Direct-fit OE-style replacement. Installs like the original with no modifications needed.

Stainless steel construction. Helps deliver longer life than typical aluminized mufflers.

Oval combination muffler. Balances exhaust flow with a clean, finished tip outlet.

Cross-references AP Exhaust 7329 for the same application. See all 1.

$136.93Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
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Step 2 — Quantity
Order total $136.93
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
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Walker Quiet-Flow SS Muffler Assembly

Walker Quiet-Flow SS 54665 is a direct-fit exhaust muffler assembly for select Ford, Lincoln, and Mercury applications. It combines stainless-steel construction with an OE-style replacement layout for a factory-like fit on the left side.

Compatible With 2006-2012 Ford Fusion, left; 2007-2012 Lincoln MKZ, left; 2006-2011 Mercury Milan, left; and 2006 Lincoln Zephyr, left. This part number is also referenced as AP Exhaust 7329 for the same application.

Key Features

  • Walker Quiet-Flow SS product line for OE-style exhaust replacement
  • Stainless steel muffler body and stainless steel muffler material for improved corrosion resistance
  • Oval muffler shape with a 30-inch overall length
  • Offset inlet and offset outlet configuration
  • 2-inch inlet outside diameter and 2.25-inch outlet outside diameter
  • Pipe connection inlet type with tip-style outlet
  • Direct-fit muffler assembly for select left-side applications
  • Aluminized finish

Product Details

Walker Quiet-Flow SS 54665 is built as an exhaust muffler assembly with an oval stainless-steel body measuring 11 inches wide, 11 inches in diameter, 5.5 inches high, and 14 inches long. The offset inlet and offset outlet layout supports OE-style routing, while the 2-inch inlet and 2.25-inch outlet dimensions match the listed vehicle applications. For shoppers searching for a 2006-2012 Ford Fusion left muffler assembly, 2007-2012 Lincoln MKZ left exhaust muffler, or 2006-2011 Mercury Milan left muffler replacement, this part number provides a direct-fit option within the Quiet-Flow SS line.

What This Part Helps Address

  • Rust or corrosion in the original muffler assembly
  • Exhaust noise caused by a worn or damaged muffler
  • Fitment issues from a non-OE-style replacement
  • Replacement needs on left-side exhaust routing for listed vehicles
  • Restoration of factory-style exhaust flow and outlet positioning

Installation Notes and Tips

Verify the vehicle year, make, model, and left-side position before ordering. Match the inlet and outlet diameters, offset configuration, and overall length to the original assembly. If the vehicle uses a welded exhaust assembly, replace all required related parts during service to ensure proper alignment and sealing.

Quality Assurance

Walker Quiet-Flow SS muffler assemblies are built with stainless-steel construction and OE-style replacement geometry for longer service life than typical aluminized mufflers. This part is listed for 2006-2012 Ford Fusion, 2007-2012 Lincoln MKZ, 2006-2011 Mercury Milan, and 2006 Lincoln Zephyr left-side applications.

Related reading

This part fits 23 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelDrive TypeLitersCylindersPositionNotes
2012FordFusionFWD3.0LV6LeftPremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2012FordFusionFWD3.5LV6LeftPremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2012LincolnMKZFWD3.5LV6LeftPremium; Limited Lifetime Warranty; Quiet-Flow SS
2011FordFusionFWD3.0LV6LeftPremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2011FordFusionFWD3.5LV6LeftPremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2011LincolnMKZFWD3.5LV6LeftPremium; Limited Lifetime Warranty; Quiet-Flow SS
2011MercuryMilanFWD3.0LV6LeftPremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2010FordFusionFWD3.0LV6LeftPremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2010FordFusionFWD3.5LV6LeftPremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2010LincolnMKZFWD3.5LV6LeftPremium; Limited Lifetime Warranty; Quiet-Flow SS
2010MercuryMilanFWD3.0LV6LeftPremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2009FordFusionFWD3.0LV6LeftPremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2009LincolnMKZFWD3.5LV6LeftPremium; Limited Lifetime Warranty; Quiet-Flow SS
2009MercuryMilanFWD3.0LV6LeftPremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2008FordFusion—3.0LV6LeftPremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2008LincolnMKZFWD3.5LV6LeftPremium; Limited Lifetime Warranty; Quiet-Flow SS
2008MercuryMilanFWD3.0LV6LeftPremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2007FordFusionFWD3.0LV6LeftPremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2007LincolnMKZFWD3.5LV6LeftPremium; Limited Lifetime Warranty; Quiet-Flow SS
2007MercuryMilanFWD3.0LV6LeftPremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2006FordFusion—3.0LV6LeftPremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2006LincolnZephyrFWD3.0LV6LeftPremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2006MercuryMilan—3.0LV6LeftPremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
AP Exhaust — 7329