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Walker 18942 Exhaust MufflerOE Quality 60-Day Returns
Part #: 18942

Walker 18942 Exhaust Muffler

SoundFX Direct Fit
28 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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OE Direct Replacement — Bolt-on fit, no modifications needed
SoundFX Direct Fit
Fitment: Buick, Chevrolet, Oldsmobile, Pontiac, and Saturn, Montana, Relay, Silhouette, Terraza, and Uplander
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Overview of Walker SoundFX Direct Fit Exhaust Muffler 18942

The Walker SoundFX Direct Fit Exhaust Muffler 18942 is designed specifically for select GM minivans, including Buick Montana, Chevrolet Uplander, Oldsmobile Silhouette, Pontiac Montana, and Saturn Relay models. This oval-shaped muffler offers a precise fit and reliable performance for your vehicle's exhaust system.

  • Specific fit for Buick, Chevrolet, Oldsmobile, Pontiac, and Saturn minivans
  • Oval body shape with aluminized steel construction
  • 2.25-inch inlet and outlet pipe connections with offset inlet configuration
  • Combination muffler type with a 32-inch overall length
  • Non-reversible design with a center outlet configuration

Product Features and Specifications

The Walker 18942 muffler features a durable aluminized steel body measuring 28 inches in length, 8.813 inches in width, and 4.25 inches in height. It has a single inlet and outlet, both with 2.25-inch inside diameters, designed for pipe connection. The inlet is offset by 2.625 inches to accommodate specific exhaust routing requirements. This combination muffler type is engineered to reduce exhaust noise while maintaining efficient flow, tailored for the exhaust systems of Buick Montana, Chevrolet Uplander, Oldsmobile Silhouette, Pontiac Montana, and Saturn Relay vehicles.

About the Walker SoundFX Direct Fit Product Line

The SoundFX Direct Fit line by Walker focuses on providing mufflers that match the original equipment specifications for a direct replacement. This ensures proper fitment and sound characteristics without the need for modifications. The 18942 muffler is part of this line, offering a balance of sound control and durability for specific GM minivan models.

Applications and Common Issues Addressed

  • Replacement for worn or damaged mufflers on Buick Montana, Chevrolet Uplander, Oldsmobile Silhouette, Pontiac Montana, and Saturn Relay
  • Reduces excessive exhaust noise caused by rust or internal damage
  • Restores proper exhaust flow to improve engine performance and efficiency
  • Prevents exhaust leaks that can lead to harmful fumes entering the cabin
  • Maintains emissions compliance by ensuring exhaust system integrity

Installation Notes and Tips

This muffler is designed for specific fitment and requires no modifications for compatible vehicles. It features pipe connection inlets and outlets, so ensure proper alignment with existing exhaust pipes. Due to its non-reversible design and offset inlet, verify orientation before installation. Professional installation is recommended to ensure secure mounting and optimal exhaust system performance.

Quality Assurance and Warranty

Constructed from aluminized steel, the Walker 18942 muffler offers corrosion resistance suitable for typical driving conditions. While specific warranty details are not provided, Walker products generally meet industry standards for durability and fitment. Using a direct fit muffler like the SoundFX Direct Fit 18942 helps maintain the integrity of your vehicle's exhaust system.

BrandWalker
Part Number18942
PositionSoundFX Direct Fit
Universal Or Specific FitSpecific
ShapeOval
Grade TypeRegular
Inlet Inside Diameter2.25
Body Width8.813
Inlet Quantity1
Outlet Inside Diameter2.25
Outlet Quantity1
ReversibleNo
TunableNo
Overall Length32
Body Height4.25
Body Length28
Body MaterialSteel
FinishAluminized
Inlet 1 Inside Diameter2.25
Inlet 1 TypePipe connection
Inlet ConfigurationOffset
Inlet Offset2.625
Inlet TypePipe connection
Muffler TypeCombination
Outlet 1 Inside Diameter2.25
Outlet 1 TypePipe connection
Outlet ConfigurationCenter
Outlet TypePipe connection

This part fits 28 vehicles. Search below:

YearMakeModelSubmodelDrive TypeLitersCylindersWheel BasePositionNotes
2009PontiacMontana3.9LV6N/Awithout Sport Package; If welded assembly, replace all required parts; SoundFX Direct Fit
2008ChevroletUplander3.9LV6N/Awithout Sport Package; If welded assembly, replace all required parts; SoundFX Direct Fit
2008PontiacMontana3.9LV6N/Awithout Sport Package; If welded assembly, replace all required parts; SoundFX Direct Fit
2007BuickTerraza3.9LV6N/Awithout Sport Package; If welded assembly, replace all required parts; SoundFX Direct Fit
2007ChevroletUplander3.9LV6N/Awithout Sport Package; If welded assembly, replace all required parts; SoundFX Direct Fit
2007PontiacMontana3.9LV6N/Awithout Sport Package; If welded assembly, replace all required parts; SoundFX Direct Fit
2007SaturnRelay3.9LV6N/AIf welded assembly, replace all required parts; SoundFX Direct Fit
2006BuickTerrazaAWD3.5LV6N/Awithout Sport Package; If welded assembly, replace all required parts; SoundFX Direct Fit
2006BuickTerrazaFWD3.5LV6N/Awith Sport Package; If welded assembly, replace all required parts; SoundFX Direct Fit
2006ChevroletUplanderFWD3.5LV6121.1"N/Awith Sport Package; If welded assembly, replace all required parts; SoundFX Direct Fit
2006PontiacMontanaFWD3.5LV6N/Awith Sport Package; If welded assembly, replace all required parts; SoundFX Direct Fit
2006PontiacMontana3.5LV6N/Awithout Sport Package; If welded assembly, replace all required parts; SoundFX Direct Fit
2006SaturnRelayFWD3.5LV6N/Awith Sport Package; If welded assembly, replace all required parts; SoundFX Direct Fit
2006SaturnRelayAWD3.5LV6N/AIf welded assembly, replace all required parts; SoundFX Direct Fit
2005BuickTerrazaAWD3.5LV6N/Awithout Sport Package; If welded assembly, replace all required parts; SoundFX Direct Fit
2005BuickTerrazaFWD3.5LV6N/Awith Sport Package; If welded assembly, replace all required parts; SoundFX Direct Fit
2005ChevroletUplanderFWD3.5LV6121.1"N/Awith Sport Package; If welded assembly, replace all required parts; SoundFX Direct Fit
2005PontiacMontanaSV6FWD3.5LV6N/Awith Sport Package; If welded assembly, replace all required parts; SoundFX Direct Fit
2005PontiacMontanaBaseFWD3.4LV6N/Awithout Sport Package; If welded assembly, replace all required parts; SoundFX Direct Fit
2005PontiacMontanaSV63.5LV6N/Awithout Sport Package; If welded assembly, replace all required parts; SoundFX Direct Fit
2005SaturnRelayFWD3.5LV6N/Awith Sport Package; If welded assembly, replace all required parts; SoundFX Direct Fit
2005SaturnRelayAWD3.5LV6N/AIf welded assembly, replace all required parts; SoundFX Direct Fit
2004OldsmobileSilhouetteFWD3.4LV6N/ASoundFX Direct Fit
2004PontiacMontanaFWD3.4LV6N/Awithout Sport Package; If welded assembly, replace all required parts; SoundFX Direct Fit
2003OldsmobileSilhouetteFWD3.4LV6N/ASoundFX Direct Fit
2003PontiacMontanaFWD3.4LV6N/Awithout Sport Package; If welded assembly, replace all required parts; SoundFX Direct Fit
2002OldsmobileSilhouetteFWD3.4LV6N/ASoundFX Direct Fit
2002PontiacMontanaFWD3.4LV6N/Awithout Sport Package; If welded assembly, replace all required parts; SoundFX Direct Fit

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

700469

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

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