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Walker 18989 Exhaust MufflerOE Quality 60-Day Returns
Part #: 18989

Walker 18989 Exhaust Muffler

SoundFX Direct Fit
42 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
SoundFX Direct Fit
Fitment: Chevrolet and GMC, Express 1500, Express 2500, Express 3500, Savana 1500, Savana 2500, and Savana 3500
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Overview of Walker SoundFX Direct Fit Exhaust Muffler 18989

The Walker SoundFX Direct Fit Exhaust Muffler 18989 is designed specifically for Chevrolet and GMC full-size vans, including Express 1500, 2500, 3500 and Savana 1500, 2500, 3500 models. This reflection-type muffler offers a precise fit and reliable performance for your vehicle's exhaust system.

  • Specific fit for Chevrolet Express and GMC Savana vans
  • Reflection muffler type for effective sound attenuation
  • Oval-shaped aluminized steel body measuring 21" length by 9" width
  • Offset inlet and outlet with 3-bolt welded flange and pipe connection
  • Durable aluminized steel finish resists corrosion
  • Overall length of 39.625" with 7" body height
  • Single inlet and outlet, both 2.75" outside diameter

Detailed Product Description

This Walker SoundFX Direct Fit muffler (part number 18989) is engineered with a reflection muffler design that helps reduce exhaust noise while maintaining optimal exhaust flow. The oval-shaped body is constructed from aluminized steel, providing corrosion resistance and durability under typical driving conditions. The muffler features an offset inlet and outlet configuration, each with a 2.75-inch outside diameter, designed to match the exhaust layout of Chevrolet Express and GMC Savana vans. The inlet uses a 3-bolt welded flange for secure attachment, ensuring a specific fit without the need for universal adjustments. With an overall length of 39.625 inches and a body length of 21 inches, this muffler fits precisely within the exhaust system of the specified vehicles.

Walker SoundFX Direct Fit Product Line

The SoundFX Direct Fit line by Walker focuses on providing vehicle-specific exhaust components that simplify installation and maintain factory-like performance. This product line emphasizes exact fitment and sound control, making it suitable for direct replacement applications on Chevrolet and GMC vans. The 18989 muffler exemplifies this approach by matching OEM specifications and mounting configurations.

Applications and Problem Solving

  • Replaces worn or damaged mufflers on Chevrolet Express and GMC Savana vans
  • Reduces excessive exhaust noise caused by muffler failure
  • Prevents exhaust leaks that can affect engine performance and emissions
  • Restores proper exhaust flow for improved vehicle operation
  • Addresses corrosion or rust issues common in older mufflers

Installation Notes and Tips

Installation of the Walker SoundFX Direct Fit muffler 18989 requires matching the 3-bolt welded flange inlet and pipe connection outlet to the existing exhaust system. Ensure the offset inlet and outlet align correctly with the vehicle’s exhaust pipes to avoid stress on connections. This muffler is not reversible or tunable, so proper orientation is necessary. Professional installation is recommended to maintain exhaust system integrity and safety.

Quality Assurance and Warranty

Constructed from aluminized steel, this muffler offers resistance to corrosion and wear typical in exhaust components. Walker is a recognized brand in exhaust parts manufacturing, known for meeting OEM standards. While specific warranty details are not provided here, Walker products generally come with limited warranties covering defects in materials and workmanship. Verify warranty terms with the supplier or manufacturer.

BrandWalker
Part Number18989
PositionSoundFX Direct Fit
Muffler TypeReflection
Universal Or Specific FitSpecific
ShapeOval
Grade TypeRegular
Body Width9
Inlet Quantity1
Outlet Quantity1
ReversibleNo
TunableNo
Overall Length39.625
Body Height7
Body Length21
Body MaterialSteel
FinishAluminized
Inlet 1 Type3 bolt welded flange
Inlet ConfigurationOffset
Inlet Offset2.625
Inlet Type3 bolt welded flange
Outlet 1 Outside Diameter2.75
Outlet 1 TypePipe connection
Outlet ConfigurationOffset
Outlet Outside Diameter2.75
Outlet TypePipe connection

This part fits 42 vehicles. Search below:

YearMakeModelLitersCylindersWheel BasePositionNotes
2002ChevroletExpress 35006.5LV8135.0"N/AOver 8500 (lb) GVW; Side Exit Tail Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
2002GMCSavana 35006.5LV8135.0"N/AOver 8500 (lb) GVW; Side Exit Tail Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
2001ChevroletExpress 35006.5LV8135.0"N/AOver 8500 (lb) GVW; Side Exit Tail Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
2001GMCSavana 35006.5LV8135.0"N/AOver 8500 (lb) GVW; Side Exit Tail Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
2000ChevroletExpress 35006.5LV8135.0"N/AOver 8500 (lb) GVW; Side Exit Tail Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
2000GMCSavana 35006.5LV8135.0"N/AOver 8500 (lb) GVW; Side Exit Tail Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1999ChevroletExpress 15005.0LV8135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1999ChevroletExpress 15004.3LV6135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1999ChevroletExpress 25005.0LV8135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1999ChevroletExpress 25004.3LV6135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1999ChevroletExpress 35006.5LV8135.0"N/AOver 8500 (lb) GVW; Side Exit Tail Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1999GMCSavana 15004.3LV6135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1999GMCSavana 15005.0LV8135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1999GMCSavana 25005.0LV8135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1999GMCSavana 25004.3LV6135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1999GMCSavana 35006.5LV8135.0"N/AOver 8500 (lb) GVW; Side Exit Tail Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1998ChevroletExpress 15005.0LV8135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1998ChevroletExpress 15004.3LV6135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1998ChevroletExpress 25005.0LV8135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1998ChevroletExpress 25004.3LV6135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1998ChevroletExpress 35006.5LV8135.0"N/AOver 8500 (lb) GVW; Side Exit Tail Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1998GMCSavana 15004.3LV6135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1998GMCSavana 15005.0LV8135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1998GMCSavana 25005.0LV8135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1998GMCSavana 25004.3LV6135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1998GMCSavana 35006.5LV8135.0"N/AOver 8500 (lb) GVW; Side Exit Tail Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1997ChevroletExpress 15005.0LV8135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1997ChevroletExpress 15004.3LV6135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1997ChevroletExpress 25005.0LV8135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1997ChevroletExpress 25004.3LV6135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1997GMCSavana 15004.3LV6135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1997GMCSavana 15005.0LV8135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1997GMCSavana 25005.0LV8135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1997GMCSavana 25004.3LV6135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1996ChevroletExpress 15005.0LV8135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1996ChevroletExpress 15004.3LV6135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1996ChevroletExpress 25005.0LV8135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1996ChevroletExpress 25004.3LV6135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1996GMCSavana 15004.3LV6135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1996GMCSavana 15005.0LV8135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1996GMCSavana 25005.0LV8135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; If welded assembly, replace all required parts; SoundFX Direct Fit
1996GMCSavana 25004.3LV6135.0"N/Awith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; 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:

700441

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

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