Walker 55273 Exhaust Resonator and Pipe Assembly
OE Quality 60-Day Returns
Walker

Walker 55273 Exhaust Resonator and Pipe Assembly

Brand Walker 55273
Body 1 Height 5
Body 1 Length 15
Body 1 Shape Round
Body 1 Width 5
Body Material Steel
Finish Aluminized
Inlet Outside Diameter 2.25
Inlet Type Pipe Connection
Muffler Body Length 15
Outlet Outside Diameter 2.25
Outlet Type Spout
Overall Length 53.5
Pipe Material Steel
Fits Pontiac, Chevrolet, Buick, Saturn, and Oldsmobile · 22 vehicles

OE-style sound. Precise tuning helps deliver smooth flow characteristics.

Steel construction. Aluminized finish adds corrosion resistance for longer service life.

Pipe connection. Single inlet and outlet simplify exhaust installation.

Cross-references AP Exhaust 54981 for the same application. See all 1.

$75.36Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $75.36
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Exhaust Resonator and Pipe Assembly options

Walker 55273 Exhaust Resonator and Pipe Assembly

Walker 55273 is an exhaust resonator and pipe assembly built to match original-system fit, sound, and flow characteristics. It uses a steel pipe and aluminized finish for OE-style replacement performance on select Pontiac, Chevrolet, Buick, Saturn, and Oldsmobile applications.

Key Features

  • 2.25 in. inlet outside diameter and 2.25 in. outlet outside diameter
  • Steel pipe material with aluminized finish
  • Round resonator body measuring 15 in. long, 5 in. high, and 5 in. wide
  • Overall length: 53.5 in.
  • 1 inlet with pipe connection and 1 outlet with spout connection
  • OE-style tuning for controlled exhaust flow and original-system sound

Detailed Description

Walker 55273 is engineered as a direct-style exhaust resonator and pipe assembly for vehicles that need a replacement section with factory-like sound characteristics. Walker uses tuning methods that help the exhaust system maintain smooth flow while keeping the tone close to the original equipment setup. This part number 55273 is a practical choice for drivers servicing a Pontiac Montana, Chevrolet Uplander, Buick Terraza, Saturn Relay, or Oldsmobile Silhouette with the correct exhaust configuration.

This part cross-references AP Exhaust 54981 for the same application.

What It Helps Address

  • Exhaust noise that has become louder or harsher than stock
  • Corrosion-related replacement needs in the resonator and pipe section
  • Fitment issues when replacing a worn OE-style exhaust assembly
  • Flow restriction caused by a damaged or deteriorated resonator section
  • Restoring factory-like exhaust tone on select GM minivan applications

Installation Notes and Tips

  • Fits 2002-2009 Pontiac Montana, without Sport Package; if welded assembly, replace all required parts
  • Fits 2007-2008 Chevrolet Uplander, without Sport Package; if welded assembly, replace all required parts
  • Fits 2005-2007 Buick Terraza, without Sport Package; if welded assembly, replace all required parts
  • Fits 2005-2007 Saturn Relay; if welded assembly, replace all required parts
  • Fits 2005-2006 Chevrolet Uplander
  • Fits 2002-2004 Oldsmobile Silhouette; if welded assembly, replace all required parts

Verify inlet and outlet sizing, overall length, and vehicle configuration before installation. Because some applications use welded assemblies, inspect the full exhaust section to confirm all required replacement parts are addressed during service.

Quality Assurance

Walker designs this resonator and pipe assembly to fit, perform, and sound like the original system, using precise tuning technology to support OE-style exhaust characteristics.

Related reading

This part fits 22 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelDrive TypeLitersCylindersWheel BasePositionNotes
2009PontiacMontana——3.9LV6121.1"N/Awithout Sport Package; If welded assembly, replace all required parts
2008ChevroletUplander——3.9LV6121.1"N/Awithout Sport Package; If welded assembly, replace all required parts
2008PontiacMontana——3.9LV6121.1"N/Awithout Sport Package; If welded assembly, replace all required parts
2007BuickTerraza——3.9LV6—N/Awithout Sport Package; If welded assembly, replace all required parts
2007ChevroletUplander——3.9LV6121.1"N/Awithout Sport Package; If welded assembly, replace all required parts
2007PontiacMontana——3.9LV6121.1"N/Awithout Sport Package; If welded assembly, replace all required parts
2007SaturnRelay——3.9LV6—N/AIf welded assembly, replace all required parts
2006BuickTerraza—AWD3.5LV6—N/Awithout Sport Package; If welded assembly, replace all required parts
2006ChevroletUplander——3.5LV6121.1"N/A—
2006PontiacMontana——3.5LV6—N/Awithout Sport Package; If welded assembly, replace all required parts
2006SaturnRelay—AWD3.5LV6—N/AIf welded assembly, replace all required parts
2005BuickTerraza—AWD3.5LV6—N/Awithout Sport Package; If welded assembly, replace all required parts
2005ChevroletUplander——3.5LV6121.1"N/A—
2005PontiacMontanaBaseFWD3.4LV6—N/Awithout Sport Package; If welded assembly, replace all required parts
2005PontiacMontanaSV6—3.5LV6—N/Awithout Sport Package; If welded assembly, replace all required parts
2005SaturnRelay—AWD3.5LV6—N/AIf welded assembly, replace all required parts
2004OldsmobileSilhouette—FWD3.4LV6—N/AIf welded assembly, replace all required parts
2004PontiacMontana—FWD3.4LV6120.0"N/Awithout Sport Package; If welded assembly, replace all required parts
2003OldsmobileSilhouette—FWD3.4LV6—N/AIf welded assembly, replace all required parts
2003PontiacMontana—FWD3.4LV6120.0"N/Awithout Sport Package; If welded assembly, replace all required parts
2002OldsmobileSilhouette—FWD3.4LV6—N/AIf welded assembly, replace all required parts
2002PontiacMontana—FWD3.4LV6120.0"N/Awithout Sport Package; If 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.
AP Exhaust — 54981