Walker 18950 Exhaust Muffler - Left
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Walker
 SoundFX Direct Fit

Walker 18950 Exhaust Muffler - Left

Brand Walker 18950
Position Left
Universal Or Specific Fit Specific
Shape Oval
Grade Type Regular
Inlet Inside Diameter 1.875
Body Width 9
Inlet Quantity 1
Outlet Quantity 1
Reversible No
Tunable No
Overall Length 32.5
Body Height 7
Body Length 14
Body Material Steel
Finish Aluminized
Inlet 1 Inside Diameter 1.875
Inlet 1 Type Pipe connection
Inlet Configuration Offset
Inlet Offset 1.625
Inlet Type Pipe connection
Muffler Type Combination
Outlet 1 Outside Diameter 2.25
Outlet 1 Type Tip
Outlet Configuration Offset
Outlet Outside Diameter 2.25
Outlet Type Tip
Product line SoundFX Direct Fit
Fits Chevrolet · 10 vehicles

Direct-fit design. Installs as a specific-fit exhaust muffler with no guesswork.

Aluminized steel. Helps resist corrosion for longer service life than low-carbon steel.

Mechanical interior joints. Spun-locked heads add durability and help maintain a quality appearance.

Cross-references AP Exhaust 700452 for the same application. See all 1.

$71.37Free 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.

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Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $71.37
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 SoundFX Direct Fit Muffler for Impala

Walker SoundFX Direct Fit muffler Part Number 18950 is a specific-fit exhaust muffler for the 2006-2011 Chevrolet Impala, left position. It combines an oval steel body with aluminized finish for longer service life than low-carbon steel and a clean OE-style appearance.

Key Features

  • Specific-fit exhaust muffler for 2006-2011 Chevrolet Impala, left
  • Walker SoundFX Direct Fit line for OE-style replacement fitment
  • 100% aluminized steel construction for improved corrosion resistance
  • Oval body shape with offset inlet and offset outlet configuration
  • Mechanical interior joints and spun-locked heads for added durability
  • 1.875 in. inlet inside diameter and 2.25 in. outlet outside diameter
  • Combination muffler design with pipe connection inlet and tip outlet

Product Details

Walker Part Number 18950 is built for direct replacement on the Chevrolet Impala and follows the SoundFX Direct Fit product line, which focuses on application-specific exhaust fitment and controlled acoustics. The aluminized steel body helps resist rust better than low-carbon steel, while the oval 32.5 in. overall length, 14 in. body length, and 9 in. body width support a factory-style layout. This muffler uses a 1.875 in. offset inlet and a 2.25 in. offset outlet, making it a practical choice for a left-side exhaust repair on the 2006-2011 Chevrolet Impala. This part cross-references AP Exhaust 700452 for the same application.

Common Problems This Part Can Address

  • Rust-through or perforation in the original muffler
  • Exhaust noise increase from a damaged internal baffle
  • Fitment issues after replacing a welded factory muffler assembly
  • Restricted exhaust flow caused by internal deterioration
  • Visible corrosion on the rear exhaust section

Installation Notes and Tips

Fits 2006-2011 Chevrolet Impala, left. If the vehicle uses a welded assembly, replace all required related exhaust parts during service to maintain proper alignment and sealing. Verify inlet and outlet orientation before installation, since this muffler is not reversible and is not tunable. Part Number 18950 should be matched to the vehicle’s left-side exhaust layout and pipe dimensions before final assembly.

Quality Assurance

Walker SoundFX Direct Fit mufflers are built with aluminized steel, mechanical interior joints, and spun-locked heads to support durability and consistent fitment in service applications.

Related reading

This part fits 10 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2011ChevroletImpala3.9LV6LeftIf welded assembly, replace all required parts; SoundFX Direct Fit
2010ChevroletImpala3.9LV6LeftIf welded assembly, replace all required parts; SoundFX Direct Fit
2009ChevroletImpala5.3LV8LeftIf welded assembly, replace all required parts; SoundFX Direct Fit
2009ChevroletImpala3.9LV6LeftIf welded assembly, replace all required parts; SoundFX Direct Fit
2008ChevroletImpala5.3LV8LeftIf welded assembly, replace all required parts; SoundFX Direct Fit
2008ChevroletImpala3.9LV6LeftIf welded assembly, replace all required parts; SoundFX Direct Fit
2007ChevroletImpala5.3LV8LeftIf welded assembly, replace all required parts; SoundFX Direct Fit
2007ChevroletImpala3.9LV6LeftIf welded assembly, replace all required parts; SoundFX Direct Fit
2006ChevroletImpala5.3LV8LeftIf welded assembly, replace all required parts; SoundFX Direct Fit
2006ChevroletImpala3.9LV6LeftIf welded assembly, replace all required parts; SoundFX Direct Fit
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
AP Exhaust — 700452