Walker 18988 Exhaust Muffler
OE Quality 60-Day Returns
Walker
 SoundFX Direct Fit

Walker 18988 Exhaust Muffler

Brand Walker 18988
Muffler Type Reflection
Universal Or Specific Fit Specific
Shape Oval
Grade Type Regular
Body Width 9
Inlet Quantity 1
Outlet Quantity 1
Reversible No
Tunable No
Overall Length 39.5
Body Height 7
Body Length 21
Body Material Steel
Finish Aluminized
Inlet 1 Type 2 bolt welded flange
Inlet Configuration Offset
Inlet Offset 2.625
Inlet Type 2 bolt welded flange
Outlet 1 Outside Diameter 2.75
Outlet 1 Type Pipe connection
Outlet Configuration Offset
Outlet Outside Diameter 2.75
Outlet Type Pipe connection
Product line SoundFX Direct Fit
Fits Chevrolet and GMC · 46 vehicles

Direct-fit design. Specific-fit exhaust replacement for select applications with OE-style service fit.

Aluminized steel. Built for longer service life than low-carbon steel in demanding exhaust environments.

Durable construction. Mechanical interior joints and spun-locked heads add strength to the muffler body.

Cross-references 700438 for the same application. See all 1.

$118.05Free 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 $118.05
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 options

Direct-Fit Muffler for GM Vans

Walker SoundFX Direct Fit muffler 18988 is a specific-fit exhaust replacement built for select Chevrolet Express and GMC Savana applications. It combines an oval steel body with aluminized finish and a reflection-style muffler design for a clean OE-style service replacement.

  • Specific-fit exhaust muffler for select GM full-size vans
  • 100% aluminized steel construction for improved service life versus low-carbon steel
  • Oval body with offset inlet and offset outlet layout
  • 2-bolt welded flange inlet for direct exhaust connection
  • Mechanical interior joints and spun-locked heads for added durability
  • Walker SoundFX Direct Fit line focuses on quality appearance and controlled acoustics

Fitment Details

Compatible With select Chevrolet Express and GMC Savana models. Fits 2000-2002 Chevrolet Express 1500, N/A. Fits 2000-2002 Chevrolet Express 2500, N/A. Fits 1998-2002 Chevrolet Express 2500, N/A. Fits 2000-2002 GMC Savana 1500, N/A. Fits 2000-2002 GMC Savana 2500, N/A. Fits 1998-2002 GMC Savana 2500, N/A.

This part cross-references 700438 for the same application.

What It Helps Fix

  • Exhaust noise from a worn or damaged muffler
  • Corrosion-related muffler failure in aluminized exhaust systems
  • Fitment issues from using a universal muffler on a specific application
  • Exhaust connection problems at the welded flange inlet

Installation Notes

Verify inlet and outlet configuration, overall length, and body dimensions before installation. Some welded exhaust assemblies require replacement of all related parts when servicing the system. Confirm the vehicle application and exhaust layout against the fitment notes for Chevrolet Express and GMC Savana models.

Quality Assurance

Walker SoundFX Direct Fit mufflers are engineered with mechanical interior joints and spun-locked heads for durability. The aluminized steel construction is specified to provide longer service life than low-carbon steel.

Related reading

This part fits 46 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersWheel BaseNotes
2002ChevroletExpress 15005.7LV8135.0"If welded assembly, replace all required parts; SoundFX Direct Fit
2002ChevroletExpress 15004.3LV6135.0"If welded assembly, replace all required parts; SoundFX Direct Fit
2002ChevroletExpress 15005.0LV8135.0"If welded assembly, replace all required parts; SoundFX Direct Fit
2002ChevroletExpress 25004.3LV6135.0"Below 8500 (lb) GVW; If welded assembly, replace all required parts; SoundFX Direct Fit
2002ChevroletExpress 25006.5LV8135.0"If welded assembly, replace all required parts; SoundFX Direct Fit
2002ChevroletExpress 25005.0LV8135.0"Below 8500 (lb) GVW; If welded assembly, replace all required parts; SoundFX Direct Fit
2002ChevroletExpress 25005.7LV8135.0"Below 8500 (lb) GVW; If welded assembly, replace all required parts; SoundFX Direct Fit
2002GMCSavana 15005.0LV8135.0"If welded assembly, replace all required parts; SoundFX Direct Fit
2002GMCSavana 15004.3LV6135.0"If welded assembly, replace all required parts; SoundFX Direct Fit
2002GMCSavana 15005.7LV8135.0"If welded assembly, replace all required parts; SoundFX Direct Fit
2002GMCSavana 25005.7LV8135.0"Below 8500 (lb) GVW; If welded assembly, replace all required parts; SoundFX Direct Fit
2002GMCSavana 25006.5LV8135.0"If welded assembly, replace all required parts; SoundFX Direct Fit
2002GMCSavana 25005.0LV8135.0"Below 8500 (lb) GVW; If welded assembly, replace all required parts; SoundFX Direct Fit
2002GMCSavana 25004.3LV6135.0"Below 8500 (lb) GVW; If welded assembly, replace all required parts; SoundFX Direct Fit
2001ChevroletExpress 15005.7LV8135.0"If welded assembly, replace all required parts; SoundFX Direct Fit
2001ChevroletExpress 15004.3LV6135.0"If welded assembly, replace all required parts; SoundFX Direct Fit
2001ChevroletExpress 15005.0LV8135.0"If welded assembly, replace all required parts; SoundFX Direct Fit
2001ChevroletExpress 25004.3LV6135.0"Below 8500 (lb) GVW; If welded assembly, replace all required parts; SoundFX Direct Fit
2001ChevroletExpress 25006.5LV8135.0"If welded assembly, replace all required parts; SoundFX Direct Fit
2001ChevroletExpress 25005.0LV8135.0"Below 8500 (lb) GVW; If welded assembly, replace all required parts; SoundFX Direct Fit
2001ChevroletExpress 25005.7LV8135.0"Below 8500 (lb) GVW; If welded assembly, replace all required parts; SoundFX Direct Fit
2001GMCSavana 15005.0LV8135.0"If welded assembly, replace all required parts; SoundFX Direct Fit
2001GMCSavana 15004.3LV6135.0"If welded assembly, replace all required parts; SoundFX Direct Fit
2001GMCSavana 15005.7LV8135.0"If welded assembly, replace all required parts; SoundFX Direct Fit
2001GMCSavana 25005.7LV8135.0"Below 8500 (lb) GVW; If welded assembly, replace all required parts; SoundFX Direct Fit
2001GMCSavana 25006.5LV8135.0"If welded assembly, replace all required parts; SoundFX Direct Fit
2001GMCSavana 25005.0LV8135.0"Below 8500 (lb) GVW; If welded assembly, replace all required parts; SoundFX Direct Fit
2001GMCSavana 25004.3LV6135.0"Below 8500 (lb) GVW; If welded assembly, replace all required parts; SoundFX Direct Fit
2000ChevroletExpress 15005.7LV8135.0"If welded assembly, replace all required parts; SoundFX Direct Fit
2000ChevroletExpress 15004.3LV6135.0"If welded assembly, replace all required parts; SoundFX Direct Fit
2000ChevroletExpress 15005.0LV8135.0"If welded assembly, replace all required parts; SoundFX Direct Fit
2000ChevroletExpress 25004.3LV6135.0"Below 8500 (lb) GVW; If welded assembly, replace all required parts; SoundFX Direct Fit
2000ChevroletExpress 25006.5LV8135.0"If welded assembly, replace all required parts; SoundFX Direct Fit
2000ChevroletExpress 25005.0LV8135.0"Below 8500 (lb) GVW; If welded assembly, replace all required parts; SoundFX Direct Fit
2000ChevroletExpress 25005.7LV8135.0"Below 8500 (lb) GVW; If welded assembly, replace all required parts; SoundFX Direct Fit
2000GMCSavana 15005.0LV8135.0"If welded assembly, replace all required parts; SoundFX Direct Fit
2000GMCSavana 15004.3LV6135.0"If welded assembly, replace all required parts; SoundFX Direct Fit
2000GMCSavana 15005.7LV8135.0"If welded assembly, replace all required parts; SoundFX Direct Fit
2000GMCSavana 25005.7LV8135.0"Below 8500 (lb) GVW; If welded assembly, replace all required parts; SoundFX Direct Fit
2000GMCSavana 25006.5LV8135.0"If welded assembly, replace all required parts; SoundFX Direct Fit
2000GMCSavana 25005.0LV8135.0"Below 8500 (lb) GVW; If welded assembly, replace all required parts; SoundFX Direct Fit
2000GMCSavana 25004.3LV6135.0"Below 8500 (lb) GVW; If welded assembly, replace all required parts; SoundFX Direct Fit
1999ChevroletExpress 25006.5LV8135.0"If welded assembly, replace all required parts; SoundFX Direct Fit
1999GMCSavana 25006.5LV8135.0"If welded assembly, replace all required parts; SoundFX Direct Fit
1998ChevroletExpress 25006.5LV8135.0"If welded assembly, replace all required parts; SoundFX Direct Fit
1998GMCSavana 25006.5LV8135.0"If 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.
700438