Walker 21284 Exhaust Muffler
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Walker
 Quiet-Flow SS

Walker 21284 Exhaust Muffler

Brand Walker 21284
Universal Or Specific Fit Specific
Shape Oval
Grade Type Regular
Inlet Inside Diameter 2
Body Width 11
Inlet Quantity 1
Outlet Quantity 1
Reversible No
Tunable No
Overall Length 27.5
Body Height 5.5
Body Length 18
Body Material Stainless steel
Finish Aluminized
Inlet 1 Inside Diameter 2
Inlet 1 Type Pipe connection
Inlet Configuration Offset
Inlet Offset 3.5
Inlet Type Pipe connection
Muffler Type Combination
Outlet 1 Outside Diameter 1.75
Outlet 1 Type Tip
Outlet Configuration Center
Outlet Outside Diameter 1.75
Outlet Type Tip
Product line Quiet-Flow SS
Fits Chevrolet and Pontiac · 31 vehicles

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

Precision fit. Engineered for a clean, OE-style replacement.

OE-style sound. Delivers a refined exhaust note without excess drone.

Cross-references AP Exhaust 14711 and OSC 2139 for the same application. See all 2.

$102.94Free shipping
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Walker Quiet-Flow SS Muffler for OE-Style Sound

Walker Quiet-Flow SS muffler Part Number 21284 is a direct-fit exhaust muffler built for specific applications and engineered for a precise fit. It uses stainless-steel construction with an OE-style sound profile, making it a practical replacement for drivers who want controlled exhaust tone and dependable flow.

Compatible with select Chevrolet Cavalier and Pontiac Sunfire models, this Walker Quiet-Flow SS muffler 21284 is shaped for a clean factory-style installation and consistent exhaust routing.

Key Features

  • Specific-fit exhaust muffler for select domestic compact cars
  • 100% stainless-steel body construction
  • Oval muffler shape with combination muffler design
  • 2-inch inlet inside diameter with pipe connection
  • Offset inlet and center outlet configuration
  • 1.75-inch outlet tip diameter
  • Aluminized finish
  • Walker Quiet-Flow SS product line for OE-style sound and fit

Product Details

The Walker Quiet-Flow SS line focuses on replacement mufflers that match factory-style sound and fit while using stainless-steel construction for the body. This model, Part Number 21284, is an oval muffler with an 11-inch body width, 5.5-inch body height, and 18-inch body length, with an overall length of 27.5 inches. The inlet is offset and measures 2 inches inside diameter, while the center outlet uses a 1.75-inch tip connection. This makes it a strong match for drivers searching for a Walker Quiet-Flow SS muffler for Chevrolet Cavalier or Pontiac Sunfire exhaust repair.

This part cross-references AP Exhaust 14711 and OSC 2139 for the same application.

Vehicle Fitment

  • Fits 1999-2005 Chevrolet Cavalier, N/A. Premium; with Single Outlet; Requires 36153 With Flat/Spade Type Or 36360 With Rod Type; If welded assembly, replace all required parts; Quiet-Flow SS.
  • Fits 1995-1998 Chevrolet Cavalier, N/A. Premium; If welded assembly, replace all required parts; Quiet-Flow SS.
  • Fits 1996-1998 Chevrolet Cavalier, N/A. Premium; Requires 36153; If welded assembly, replace all required parts; Quiet-Flow SS.
  • Fits 1999-2005 Pontiac Sunfire, N/A. Premium; with Single Outlet; Requires 36153 Or 36360; If welded assembly, replace all required parts; Quiet-Flow SS.
  • Fits 1999-2001 Pontiac Sunfire, N/A. Premium; with Single Outlet; Requires 36153 Or 36360; Quiet-Flow SS.

Installation Notes

Verify inlet and outlet dimensions, offset layout, and vehicle-specific notes before installation. This muffler is not reversible or tunable, so orientation matters during exhaust system replacement. For welded assemblies, replace all required parts listed for the vehicle to maintain proper alignment and sealing.

Quality Assurance

Walker Quiet-Flow SS mufflers are built with stainless-steel construction and designed to deliver precision fit, steady exhaust flow, and OE-style sound characteristics. Part Number 21284 is part of Walker’s Quiet-Flow SS line for domestic and import vehicle applications.

Related reading

This part fits 31 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelBody TypeLitersCylindersPositionNotes
2005ChevroletCavalier—2.2LL4N/APremium; with Single Outlet; Limited Lifetime Warranty; Requires 36153 With Flat/Spade Type Or 36360 With Rod Type; If welded assembly, replace all required parts; Quiet-Flow SS
2005PontiacSunfire—2.2LL4N/APremium; with Single Outlet; Limited Lifetime Warranty; Requires 36153 Or 36360; If welded assembly, replace all required parts; Quiet-Flow SS
2004ChevroletCavalier—2.2LL4N/APremium; with Single Outlet; Limited Lifetime Warranty; Requires 36153 With Flat/Spade Type Or 36360 With Rod Type; If welded assembly, replace all required parts; Quiet-Flow SS
2004PontiacSunfire—2.2LL4N/APremium; with Single Outlet; Limited Lifetime Warranty; Requires 36153 Or 36360; If welded assembly, replace all required parts; Quiet-Flow SS
2003ChevroletCavalier—2.2LL4N/APremium; with Single Outlet; Limited Lifetime Warranty; Requires 36153 With Flat/Spade Type Or 36360 With Rod Type; If welded assembly, replace all required parts; Quiet-Flow SS
2003PontiacSunfire—2.2LL4N/APremium; with Single Outlet; Limited Lifetime Warranty; Requires 36153 Or 36360; If welded assembly, replace all required parts; Quiet-Flow SS
2002ChevroletCavalier—2.4LL4N/APremium; with Single Outlet; Limited Lifetime Warranty; Requires 36153 With Flat/Spade Type Or 36360 With Rod Type; If welded assembly, replace all required parts; Quiet-Flow SS
2002ChevroletCavalier—2.2LL4N/APremium; with Single Outlet; Limited Lifetime Warranty; Requires 36153 With Flat/Spade Type Or 36360 With Rod Type; If welded assembly, replace all required parts; Quiet-Flow SS
2002PontiacSunfire—2.2LL4N/APremium; with Single Outlet; Limited Lifetime Warranty; Requires 36153 Or 36360; If welded assembly, replace all required parts; Quiet-Flow SS
2001ChevroletCavalier—2.4LL4N/APremium; with Single Outlet; Limited Lifetime Warranty; Requires 36153 With Flat/Spade Type Or 36360 With Rod Type; If welded assembly, replace all required parts; Quiet-Flow SS
2001ChevroletCavalier—2.2LL4N/APremium; with Single Outlet; Limited Lifetime Warranty; Requires 36153 With Flat/Spade Type Or 36360 With Rod Type; If welded assembly, replace all required parts; Quiet-Flow SS
2001PontiacSunfire—2.4LL4N/APremium; with Single Outlet; Limited Lifetime Warranty; Requires 36153 Or 36360; Quiet-Flow SS
2001PontiacSunfire—2.2LL4N/APremium; with Single Outlet; Limited Lifetime Warranty; Requires 36153 Or 36360; If welded assembly, replace all required parts; Quiet-Flow SS
2000ChevroletCavalier—2.4LL4N/APremium; with Single Outlet; Limited Lifetime Warranty; Requires 36153 With Flat/Spade Type Or 36360 With Rod Type; If welded assembly, replace all required parts; Quiet-Flow SS
2000ChevroletCavalier—2.2LL4N/APremium; with Single Outlet; Limited Lifetime Warranty; Requires 36153 With Flat/Spade Type Or 36360 With Rod Type; If welded assembly, replace all required parts; Quiet-Flow SS
2000PontiacSunfire—2.4LL4N/APremium; with Single Outlet; Limited Lifetime Warranty; Requires 36153 Or 36360; Quiet-Flow SS
2000PontiacSunfire—2.2LL4N/APremium; with Single Outlet; Limited Lifetime Warranty; Requires 36153 Or 36360; If welded assembly, replace all required parts; Quiet-Flow SS
1999ChevroletCavalier—2.4LL4N/APremium; with Single Outlet; Limited Lifetime Warranty; Requires 36153 With Flat/Spade Type Or 36360 With Rod Type; If welded assembly, replace all required parts; Quiet-Flow SS
1999ChevroletCavalier—2.2LL4N/APremium; with Single Outlet; Limited Lifetime Warranty; Requires 36153 With Flat/Spade Type Or 36360 With Rod Type; If welded assembly, replace all required parts; Quiet-Flow SS
1999PontiacSunfire—2.4LL4N/APremium; with Single Outlet; Limited Lifetime Warranty; Requires 36153 Or 36360; Quiet-Flow SS
1999PontiacSunfire—2.2LL4N/APremium; with Single Outlet; Limited Lifetime Warranty; Requires 36153 Or 36360; If welded assembly, replace all required parts; Quiet-Flow SS
1998ChevroletCavalier—2.2LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1998ChevroletCavalierSedan2.4LL4N/APremium; Limited Lifetime Warranty; Requires 36153; If welded assembly, replace all required parts; Quiet-Flow SS
1998ChevroletCavalierConvertible2.4LL4N/APremium; Limited Lifetime Warranty; Requires 36153; If welded assembly, replace all required parts; Quiet-Flow SS
1997ChevroletCavalier—2.2LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1997ChevroletCavalierSedan2.4LL4N/APremium; Limited Lifetime Warranty; Requires 36153; If welded assembly, replace all required parts; Quiet-Flow SS
1997ChevroletCavalierConvertible2.4LL4N/APremium; Limited Lifetime Warranty; Requires 36153; If welded assembly, replace all required parts; Quiet-Flow SS
1996ChevroletCavalier—2.2LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1996ChevroletCavalierSedan2.4LL4N/APremium; Limited Lifetime Warranty; Requires 36153; If welded assembly, replace all required parts; Quiet-Flow SS
1996ChevroletCavalierConvertible2.4LL4N/APremium; Limited Lifetime Warranty; Requires 36153; If welded assembly, replace all required parts; Quiet-Flow SS
1995ChevroletCavalier—2.2LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
Directly replaces or cross-references 2 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
AP Exhaust — 14711OSC — 2139