Walker 21346 Exhaust Muffler
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Walker
 Quiet-Flow SS

Walker 21346 Exhaust Muffler

Brand Walker 21346
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 27.75
Body Height 5.5
Body Length 15
Body Material Stainless steel
Finish Aluminized
Inlet 1 Inside Diameter 2
Inlet 1 Type Pipe connection
Inlet Configuration Offset
Inlet Offset 3.75
Inlet Type Pipe connection
Muffler Type Combination
Outlet 1 Outside Diameter 2.25
Outlet 1 Type Tip
Outlet Configuration Offset
Outlet Outside Diameter 2.25
Outlet Type Tip
Product line Quiet-Flow SS
Fits Buick and Pontiac · 20 vehicles

100% stainless steel. Built for lasting corrosion resistance and dependable performance.

Precision fit. Installs cleanly with OE-style sound and superior flow.

Oval combination muffler. Delivers a balanced exhaust tone in a compact design.

Cross-references 2246 for the same application. See all 1.

$126.02Free shipping
In stock · usually ships same day before 1pm CST
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Step 2 — Quantity
Order total $126.02
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Free returns within 60 days if it doesn't fit when fitment is verified.
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Walker Quiet-Flow SS Muffler for OE-Style Replacement

Walker Quiet-Flow SS muffler Part Number 21346 is a specific-fit exhaust muffler built for select Buick Century and Pontiac Grand Prix applications. It uses 100% stainless-steel construction for the body, with an OE-style sound profile and precision fit for direct replacement service.

The Quiet-Flow SS line is Walker’s stainless-steel muffler family for domestic and import vehicles, focused on factory-style sound control and consistent exhaust flow. This part number 21346 is shaped as an oval combination muffler with a 2-inch inlet, 2.25-inch outlet, offset inlet and outlet configuration, and aluminized finish.

Key Features

  • Specific-fit exhaust muffler for select applications
  • 100% stainless-steel body construction
  • Oval muffler shape with combination design
  • 2-inch inlet inside diameter and 2.25-inch outlet outside diameter
  • Offset inlet and offset outlet configuration
  • OE-style sound characteristics
  • Walker Quiet-Flow SS line for domestic and import vehicles

Detailed Product Description

Walker 21346 is an exhaust muffler engineered for direct-fit replacement on 1997-2005 Buick Century and 1997-2003 Pontiac Grand Prix, including 1997-2000 Pontiac Grand Prix with single exhaust. It is built with a stainless-steel body and designed to maintain factory-like exhaust tone while supporting proper flow through the exhaust system. The oval body measures 11 inches wide, 5.5 inches high, and 15 inches long, with an overall length of 27.75 inches.

This part cross-references 2246 for the same application. If you are replacing a worn muffler on a Buick Century or Pontiac Grand Prix, Part Number 21346 provides a direct-fit option with the dimensions and inlet/outlet layout needed for the listed vehicles.

Common Issues This Muffler Can Address

  • Exhaust noise from a damaged or rusted muffler
  • Loss of factory-style sound control
  • Corrosion-related muffler failure
  • Restricted exhaust flow caused by internal deterioration
  • Need for a direct replacement on listed Buick Century and Pontiac Grand Prix models

Installation Notes and Fitment

Fits 1997-2005 Buick Century, N/A. Fits 1997-2003 Pontiac Grand Prix, N/A. Fits 1997-2000 Pontiac Grand Prix, N/A, with single exhaust.

Verify inlet and outlet orientation before installation. This muffler is not reversible and is not tunable. For welded assemblies, replace all required parts as noted in the fitment data. Confirm the vehicle’s exhaust configuration matches the listed application before ordering Walker 21346.

Quality Assurance

Walker Quiet-Flow SS mufflers are built with 100% stainless-steel construction and are positioned as OE-style replacement parts for broad domestic and import coverage. Part Number 21346 is part of the Quiet-Flow SS line, which emphasizes precision fit, consistent flow, and factory-like sound control.

Related reading

This part fits 20 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelDrive TypeLitersCylindersPositionNotes
2005BuickCentury—3.1LV6N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2004BuickCentury—3.1LV6N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2003BuickCentury—3.1LV6N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2003PontiacGrand PrixFWD3.1LV6N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2002BuickCentury—3.1LV6N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2002PontiacGrand PrixFWD3.1LV6N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2001BuickCentury—3.1LV6N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2001PontiacGrand PrixFWD3.1LV6N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2000BuickCentury—3.1LV6N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2000PontiacGrand PrixFWD3.1LV6N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2000PontiacGrand Prix—3.8LV6N/APremium; with Single Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1999BuickCentury—3.1LV6N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1999PontiacGrand PrixFWD3.1LV6N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1999PontiacGrand Prix—3.8LV6N/APremium; with Single Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1998BuickCentury—3.1LV6N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1998PontiacGrand PrixFWD3.1LV6N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1998PontiacGrand Prix—3.8LV6N/APremium; with Single Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1997BuickCentury—3.1LV6N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1997PontiacGrand PrixFWD3.1LV6N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1997PontiacGrand Prix—3.8LV6N/APremium; with Single Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
2246