Walker 18824 Exhaust Muffler
OE Quality 60-Day Returns
Walker
 SoundFX Direct Fit

Walker 18824 Exhaust Muffler

Brand Walker 18824
Universal Or Specific Fit Specific
Shape Oval
Grade Type Regular
Inlet Inside Diameter 2
Body Width 9
Outlet Quantity 1
Reversible No
Tunable No
Overall Length 29
Body Height 7
Body Length 24
Body Material Steel
Finish Aluminized
Inlet 1 Inside Diameter 2
Inlet 1 Type Pipe connection
Inlet 2 Inside Diameter 2
Inlet 2 Type Pipe connection
Inlet Configuration Offset
Inlet Offset 2.625
Inlet Quantity 2
Inlet Type Pipe connection
Muffler Type Combination
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 · 28 vehicles

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

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

Mechanical interior joints. Spun-locked heads add durability inside the muffler.

Cross-references AP Exhaust 700258 for the same application. See all 1.

$80.01Free shipping
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Step 2 — Quantity
Order total $80.01
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Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Exhaust Muffler options

Walker SoundFX Direct Fit Muffler for GM Trucks

Walker SoundFX Direct Fit muffler Part Number 18824 is a specific-fit exhaust muffler built for select 1996-1999 Chevrolet C1500, Chevrolet K1500, GMC C1500, GMC K1500, and 1996-1998 Chevrolet C2500 and GMC C2500 applications. It uses an oval steel body with an aluminized finish for improved service life versus low-carbon steel, along with a direct-fit layout that matches the listed inlet and outlet configuration.

Key Features

  • Specific-fit exhaust muffler for select Chevrolet and GMC trucks
  • Oval body design with 29-inch overall length
  • 100% aluminized steel construction for longer service life
  • Mechanical interior joints and spun-locked heads for added durability
  • Offset inlet and offset outlet pipe connection layout
  • 2-inch inlet inside diameter and 2.75-inch outlet outside diameter
  • Walker SoundFX Direct Fit line for OE-style replacement applications

Product Details

The Walker SoundFX Direct Fit line focuses on replacement mufflers that match factory-style fitment and acoustics without requiring a universal fabrication approach. Part Number 18824 uses a combination muffler design with a steel body, aluminized finish, 9-inch body width, 7-inch body height, and 24-inch body length. The offset inlet and offset outlet configuration supports the listed GM truck applications, including Chevrolet C1500, Chevrolet K1500, GMC C1500, and GMC K1500 models from 1996-1999, plus Chevrolet C2500 and GMC C2500 models from 1996-1998.

This part cross-references AP Exhaust 700258 for the same application.

Common Exhaust Issues It Can Address

  • Rust-through or corrosion in the original muffler
  • Exhaust noise caused by a damaged internal baffle or shell
  • Restricted exhaust flow from a deteriorated muffler core
  • Fitment problems when replacing a factory-style GM truck muffler
  • Need for a direct-fit replacement on select Chevrolet and GMC C/K trucks

Installation Notes and Tips

Fits 1996-1999 Chevrolet C1500, N/A; Fits 1996-1999 Chevrolet K1500, N/A; Fits 1996-1998 Chevrolet C2500, N/A; Fits 1996-1999 GMC C1500, N/A; Fits 1996-1999 GMC K1500, N/A; Fits 1996-1998 GMC C2500, N/A. For the listed C2500 applications, verify the vehicle is below 8500 lb GVW. Replacement of the muffler requires replacement of the extension H-pipe on the listed applications, and if the exhaust uses a welded assembly, replace all required parts together. Confirm inlet and outlet orientation before installation.

Quality Assurance

Walker builds SoundFX Direct Fit mufflers with aluminized steel, mechanical interior joints, and spun-locked heads to support durability in replacement exhaust service. Part Number 18824 is engineered as a direct-fit muffler for the specified Chevrolet and GMC truck applications.

Related reading

This part fits 28 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersWheel BasePositionNotes
1999ChevroletC15005.7LV8—N/AReplacement of Muffler Requires Replacement of Extension H-Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1999ChevroletK15005.7LV8—N/AReplacement of Muffler Requires Replacement of Extension H-Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1999GMCC15005.7LV8—N/AReplacement of Muffler Requires Replacement of Extension H-Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1999GMCK15005.7LV8—N/AReplacement of Muffler Requires Replacement of Extension H-Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1998ChevroletC15005.7LV8—N/AReplacement of Muffler Requires Replacement of Extension H-Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1998ChevroletC25005.7LV8131.5"N/ABelow 8500 (lb) GVW; Replacement of Muffler Requires Replacement of Extension H-Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1998ChevroletC25005.7LV8141.5"N/ABelow 8500 (lb) GVW; Replacement of Muffler Requires Replacement of Extension H-Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1998ChevroletK15005.7LV8—N/AReplacement of Muffler Requires Replacement of Extension H-Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1998GMCC15005.7LV8—N/AReplacement of Muffler Requires Replacement of Extension H-Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1998GMCC25005.7LV8131.5"N/ABelow 8500 (lb) GVW; Replacement of Muffler Requires Replacement of Extension H-Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1998GMCC25005.7LV8141.5"N/ABelow 8500 (lb) GVW; Replacement of Muffler Requires Replacement of Extension H-Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1998GMCK15005.7LV8—N/AReplacement of Muffler Requires Replacement of Extension H-Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1997ChevroletC15005.7LV8—N/AReplacement of Muffler Requires Replacement of Extension H-Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1997ChevroletC25005.7LV8131.5"N/ABelow 8500 (lb) GVW; Replacement of Muffler Requires Replacement of Extension H-Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1997ChevroletC25005.7LV8141.5"N/ABelow 8500 (lb) GVW; Replacement of Muffler Requires Replacement of Extension H-Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1997ChevroletK15005.7LV8—N/AReplacement of Muffler Requires Replacement of Extension H-Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1997GMCC15005.7LV8—N/AReplacement of Muffler Requires Replacement of Extension H-Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1997GMCC25005.7LV8131.5"N/ABelow 8500 (lb) GVW; Replacement of Muffler Requires Replacement of Extension H-Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1997GMCC25005.7LV8141.5"N/ABelow 8500 (lb) GVW; Replacement of Muffler Requires Replacement of Extension H-Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1997GMCK15005.7LV8—N/AReplacement of Muffler Requires Replacement of Extension H-Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1996ChevroletC15005.7LV8—N/AReplacement of Muffler Requires Replacement of Extension H-Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1996ChevroletC25005.7LV8131.5"N/ABelow 8500 (lb) GVW; Replacement of Muffler Requires Replacement of Extension H-Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1996ChevroletC25005.7LV8141.5"N/ABelow 8500 (lb) GVW; Replacement of Muffler Requires Replacement of Extension H-Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1996ChevroletK15005.7LV8—N/AReplacement of Muffler Requires Replacement of Extension H-Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1996GMCC15005.7LV8—N/AReplacement of Muffler Requires Replacement of Extension H-Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1996GMCC25005.7LV8131.5"N/ABelow 8500 (lb) GVW; Replacement of Muffler Requires Replacement of Extension H-Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1996GMCC25005.7LV8141.5"N/ABelow 8500 (lb) GVW; Replacement of Muffler Requires Replacement of Extension H-Pipe; If welded assembly, replace all required parts; SoundFX Direct Fit
1996GMCK15005.7LV8—N/AReplacement of Muffler Requires Replacement of Extension H-Pipe; 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.
AP Exhaust — 700258