Walker 21340 Exhaust Resonator
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Walker

Walker 21340 Exhaust Resonator

Brand Walker 21340
Body 1 Height 3.5
Body 1 Length 28
Body 1 Shape Round
Body 1 Width 3.5
Body Height 3.5
Body Length 28
Body Material Steel
Body Width 3.5
Friction Material Thickness Aluminized
Inlet Configuration Center
Inlet Quantity 1
Inlet Type 2 Bolt Welded Flange
Outlet Configuration Center
Outlet Inside Diameter 2
Outlet Outside Diameter 2
Outlet Quantity 1
Outlet Type Pipe Connection
Resonator Shape Round
Universal Or Specific Fit Direct Fit
Fits Buick · 10 vehicles

Direct fit. Installs as a direct replacement with no modifications needed.

OE-style sound. Precise tuning helps deliver the original system's sound character.

Aluminized steel. Corrosion-resistant finish on a steel resonator body.

Cross-references Anchor 2261 for the same application. See all 1.

$83.11Free shipping
In stock · usually ships same day before 1pm CST
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Free returns within 60 days if it doesn't fit when fitment is verified.
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Walker 21340 Exhaust Resonator for Buick Regal

Walker 21340 is a direct-fit exhaust resonator built for the 1997-2004 Buick Regal. It uses OE-style tuning to help maintain factory-like exhaust sound and flow characteristics while matching the original system layout.

Key Features

  • Direct fit for 1997-2004 Buick Regal
  • Exhaust resonator design for OE-style sound control
  • Aluminized steel construction for corrosion resistance
  • Round body with 28-inch body length
  • Center inlet and center outlet configuration
  • 2-bolt welded flange inlet with pipe connection outlet
  • 2-inch inlet and 2-inch outlet diameters

Detailed Description

Walker 21340 is engineered to match the fit, sound, and performance profile of the original exhaust resonator on the Buick Regal. The aluminized steel body and precise tuning approach support consistent exhaust flow while helping preserve the vehicle’s factory exhaust note. This part number, 21340, is a direct-fit replacement for Regal models from 1997 through 2004 and is built around a center-in, center-out layout for straightforward system alignment.

This part cross-references Anchor 2261 for the same application.

What It Helps Address

  • Exhaust resonance or drone from a worn resonator
  • Factory exhaust sound that has become louder or harsher
  • Corrosion-related failure in the resonator body
  • Fitment issues when replacing the original Buick Regal resonator
  • Flow restriction caused by a damaged internal exhaust component

Installation Notes and Tips

Compatible With 1997-2004 Buick Regal, center position. Verify inlet and outlet diameters, flange style, and overall body dimensions before installation. If the original assembly was welded in place, replace all required adjoining parts to complete the repair correctly. Professional exhaust installation is recommended to ensure proper alignment and sealing.

Quality Assurance

Walker designs this resonator to fit, perform, and sound like the original system, using tuning methods intended to support OE-style exhaust characteristics. Part number 21340 is built as a direct-fit replacement for the listed Buick Regal applications.

Related reading

This part fits 10 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelLitersCylindersPositionNotes
2004BuickRegalLS3.8LV6N/AIf welded assembly, replace all required parts
2004BuickRegalGS3.8LV6N/AIf welded assembly, replace all required parts
2003BuickRegalLS3.8LV6N/AIf welded assembly, replace all required parts
2003BuickRegalGS3.8LV6N/AIf welded assembly, replace all required parts
2002BuickRegal—3.8LV6N/AIf welded assembly, replace all required parts
2001BuickRegal—3.8LV6N/AIf welded assembly, replace all required parts
2000BuickRegal—3.8LV6N/AIf welded assembly, replace all required parts
1999BuickRegal—3.8LV6N/AIf welded assembly, replace all required parts
1998BuickRegal—3.8LV6N/AIf welded assembly, replace all required parts
1997BuickRegal—3.8LV6N/AIf welded assembly, replace all required parts
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Anchor — 2261