Walker 55122 Exhaust Resonator and Pipe Assembly
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Walker

Walker 55122 Exhaust Resonator and Pipe Assembly

Brand Walker 55122
Inlet Outside Diameter 2.25
Outlet Outside Diameter 2.25
Muffler Body Length 15
Pipe Material Steel
Overall Length 52.375
Body 1 Height 5
Body 1 Length 15
Body 1 Shape Round
Body 1 Width 5
Body Material Steel
Finish Aluminized
Inlet Quantity 1
Inlet Type Pipe connection
Outlet Quantity 1
Outlet Type Spout
Fits Oldsmobile and Pontiac · 10 vehicles

OE-style sound. Precise tuning helps deliver the original system's tone and flow characteristics.

Steel construction. Steel body and pipe materials provide durable exhaust performance.

Aluminized finish. Helps resist corrosion for longer service life.

Cross-references AP Exhaust 54945 for the same application. See all 1.

$106.11Free shipping
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Walker 55122 Exhaust Resonator and Pipe Assembly

Walker 55122 is an exhaust resonator and pipe assembly built to match original-system fit, sound, and flow characteristics. It uses aluminized steel construction with a 2.25-inch inlet and 2.25-inch outlet for a direct-style exhaust repair on select Oldsmobile, Pontiac, and Trans Sport applications.

Key Features

  • Part number 55122 for OE-style exhaust replacement
  • 2.25-inch inlet outside diameter and 2.25-inch outlet outside diameter
  • Steel pipe and steel body construction
  • Aluminized finish for added corrosion resistance
  • Round 5 x 5-inch body with 15-inch body length
  • 52.375-inch overall length for application-specific exhaust routing
  • Single pipe connection inlet and spout-style outlet

Application Details

This Walker resonator assembly is engineered for vehicles that need an OE-style exhaust tone and proper flow through the resonator section. It is a direct-fit style solution for 1997-2001 Oldsmobile Silhouette, 1999-2001 Pontiac Montana, and 1997-1998 Pontiac Trans Sport applications. If the original system is a welded assembly, replace all required parts to complete the repair correctly. Walker 55122 is also cross-referenced to AP Exhaust 54945 for the same application.

What It Helps Repair

  • Exhaust noise that has become louder or harsher than stock
  • Rattling or damaged resonator sections in the exhaust path
  • Corrosion-related exhaust leaks in the resonator and pipe assembly
  • Poor exhaust flow caused by a worn or restricted resonator
  • Fitment issues when replacing an OE-style resonator on Silhouette, Montana, or Trans Sport models

Installation Notes

Confirm inlet and outlet diameter match before installation. This assembly uses a pipe connection inlet and spout outlet, so alignment with the existing exhaust routing is important. For welded factory systems, inspect the surrounding exhaust sections and replace all required parts as needed to complete the repair. Fits 1997-2001 Oldsmobile Silhouette, N/A; fits 1999-2001 Pontiac Montana, N/A; fits 1997-1998 Pontiac Trans Sport, N/A.

Quality Assurance

Walker designs this resonator to fit, perform, and sound like the original system, using tuning methods that support OE-style exhaust sound and flow characteristics.

Related reading

This part fits 10 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersWheel BasePositionNotes
2001OldsmobileSilhouette3.4LV6120.0"N/AIf welded assembly, replace all required parts
2001PontiacMontana3.4LV6120.0"N/AIf welded assembly, replace all required parts
2000OldsmobileSilhouette3.4LV6120.0"N/AIf welded assembly, replace all required parts
2000PontiacMontana3.4LV6120.0"N/AIf welded assembly, replace all required parts
1999OldsmobileSilhouette3.4LV6120.0"N/AIf welded assembly, replace all required parts
1999PontiacMontana3.4LV6120.0"N/AIf welded assembly, replace all required parts
1998OldsmobileSilhouette3.4LV6120.0"N/AIf welded assembly, replace all required parts
1998PontiacTrans Sport3.4LV6120.0"N/AIf welded assembly, replace all required parts
1997OldsmobileSilhouette3.4LV6120.0"N/AIf welded assembly, replace all required parts
1997PontiacTrans Sport3.4LV6120.0"N/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.
AP Exhaust — 54945