Walker 21339 Exhaust Muffler
OE Quality 60-Day Returns
Walker
 Quiet-Flow SS

Walker 21339 Exhaust Muffler

Brand Walker 21339
Universal Or Specific Fit Specific
Shape Oval
Grade Type Regular
Inlet Inside Diameter 2.25
Body Width 9.75
Inlet Quantity 1
Outlet Quantity 1
Reversible No
Tunable No
Overall Length 32.75
Body Height 4.25
Body Length 19
Body Material Stainless steel
Finish Aluminized
Inlet 1 Inside Diameter 2.25
Inlet 1 Type Pipe connection
Inlet Configuration Offset
Inlet Offset 2.875
Inlet Type Pipe connection
Muffler Type Combination
Outlet 1 Outside Diameter 2.25
Outlet 1 Type Pipe connection
Outlet Configuration Center
Outlet Outside Diameter 2.25
Outlet Type Pipe connection
Product line Quiet-Flow SS
Fits Chevrolet, GMC, and Isuzu · 24 vehicles

100% stainless steel. Corrosion-resistant construction for long-lasting exhaust performance.

OE-style sound. Delivers a refined exhaust note with superior flow.

Precision fit. Specific-fit muffler with pipe connections for straightforward installation.

Cross-references AP Exhaust 54918, OSC 2184 and Walker Exhaust 45453 for the same application. See all 3.

$98.31Free shipping
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Walker Quiet-Flow SS Muffler 21339 Overview

Walker Quiet-Flow SS 21339 is a specific-fit exhaust muffler built with stainless-steel construction for durability and OE-style sound control. It is engineered for direct replacement applications on select Chevrolet S10, GMC Sonoma, and Isuzu Hombre models from 1998-2000.

The Quiet-Flow SS line focuses on precision fit and smooth exhaust flow, making it a practical choice for drivers replacing a worn muffler on a 2.25-inch pipe connection system. Part number 21339 is shaped as an oval combination muffler with an offset inlet and center outlet layout.

Quiet-Flow SS Product Line

Walker Quiet-Flow SS mufflers are positioned as stainless-steel replacement mufflers for domestic and import vehicles. This line is built to match OE-style sound characteristics while maintaining a direct-fit design for easier exhaust service on supported applications.

Key Features

  • Specific-fit exhaust muffler for select vehicle applications
  • 100% stainless-steel body construction for corrosion resistance
  • Oval combination muffler design
  • 2.25-inch inlet and 2.25-inch outlet pipe connections
  • Offset inlet and center outlet configuration
  • Overall length: 32.75 inches
  • Body dimensions: 19 inches long, 9.75 inches wide, 4.25 inches high
  • Aluminized finish

Detailed Description

Walker Quiet-Flow SS 21339 is an exhaust muffler replacement for 1998-2000 Chevrolet S10, 1998-2000 GMC Sonoma, and 1998-2000 Isuzu Hombre applications. The stainless-steel body supports long-term exhaust service, while the oval shape and combination muffler design help maintain factory-style exhaust routing and sound characteristics. This part number 21339 uses a 2.25-inch pipe connection with an offset inlet and center outlet, which is important when matching the original exhaust layout on the vehicle.

This part cross-references AP Exhaust 54918 for the same application.

Common Problems This Muffler Can Address

  • Rusted or perforated factory muffler housing
  • Exhaust noise from a failing muffler core or shell
  • Restricted exhaust flow caused by internal deterioration
  • Fitment issues when replacing a worn OE-style muffler
  • Need for a direct replacement on 1998-2000 Chevrolet S10, GMC Sonoma, or Isuzu Hombre

Installation Notes and Tips

Confirm the inlet and outlet configuration before installation, since this muffler uses an offset inlet and center outlet layout. Verify the 2.25-inch pipe connection size and compare the overall length and body dimensions to the original part before welding or final assembly. If the exhaust system is a welded assembly, replace all required related parts during service to maintain proper alignment.

Compatible With 1998-2000 Chevrolet S10, N/A; 1998-2000 GMC Sonoma, N/A; and 1998-2000 Isuzu Hombre, N/A. Use the vehicle’s existing exhaust routing and mounting points as the reference for replacement.

Quality Assurance

Walker Quiet-Flow SS mufflers are built with 100% stainless-steel construction and are designed for precision fit and OE-style sound. Part number 21339 is part of Walker’s Quiet-Flow SS line, which is offered for a broad range of domestic and import vehicle applications.

Related reading

This part fits 24 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelDrive TypeLitersCylindersWheel BasePositionNotes
2000ChevroletS10RWD2.2LL4122.9"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2000ChevroletS10RWD2.2LL4108.3"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2000ChevroletS10RWD2.2LL4117.9"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2000GMCSonomaRWD2.2LL4108.3"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2000GMCSonomaRWD2.2LL4117.9"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2000GMCSonomaRWD2.2LL4122.9"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2000IsuzuHombre—2.2LL4108.3"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2000IsuzuHombre—2.2LL4122.9"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1999ChevroletS10RWD2.2LL4122.9"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1999ChevroletS10RWD2.2LL4108.3"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1999ChevroletS10RWD2.2LL4117.9"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1999GMCSonomaRWD2.2LL4108.3"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1999GMCSonomaRWD2.2LL4117.9"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1999GMCSonomaRWD2.2LL4122.9"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1999IsuzuHombre—2.2LL4108.3"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1999IsuzuHombre—2.2LL4122.9"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1998ChevroletS10RWD2.2LL4122.9"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1998ChevroletS10RWD2.2LL4108.3"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1998ChevroletS10RWD2.2LL4117.9"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1998GMCSonomaRWD2.2LL4108.3"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1998GMCSonomaRWD2.2LL4117.9"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1998GMCSonomaRWD2.2LL4122.9"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1998IsuzuHombre—2.2LL4108.3"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1998IsuzuHombre—2.2LL4122.9"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
Directly replaces or cross-references 3 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
AP Exhaust — 54918OSC — 2184Walker Exhaust — 45453