Walker 55685 Exhaust Resonator and Pipe Assembly
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Walker

Walker 55685 Exhaust Resonator and Pipe Assembly

Brand Walker 55685
Outlet Outside Diameter 2
Muffler Body Length 17.5
Pipe Material Steel
Overall Length 55.875
Body 1 Height 5.375
Body 1 Length 17.5
Body 1 Shape Oval
Body 1 Width 6.5
Body Material Steel
Finish Aluminized
Inlet Quantity 1
Inlet Type 3 bolt welded flange
Outlet Quantity 1
Outlet Type Pipe connection
Fits Acura · 6 vehicles

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

Steel construction. Durable pipe and body materials with an aluminized finish.

Resonator and pipe assembly. A complete exhaust component with welded flange inlet and pipe outlet.

Cross-references AP Exhaust 58568 for the same application. See all 1.

$212.94Free shipping
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Walker 55685 Exhaust Resonator and Pipe Assembly

Walker 55685 is an exhaust resonator and pipe assembly built to match the original system’s fit, sound, and flow characteristics. It uses an aluminized steel construction with a 3-bolt welded flange inlet and a 2-inch outlet outside diameter for OE-style replacement service.

Compatible with 2007-2012 Acura RDX applications, this Walker resonator assembly is a direct-fit option for drivers replacing a worn or damaged exhaust section. The Walker 55685 part number is also referenced for the same application under AP Exhaust 58568.

Key Features

  • Walker 55685 exhaust resonator and pipe assembly
  • Aluminized steel body and pipe construction
  • Oval resonator body with 17.5-inch body length
  • Overall length: 55.875 inches
  • 1 inlet with 3-bolt welded flange connection
  • 1 outlet with pipe connection
  • 2-inch outlet outside diameter
  • OE-style tuning for original sound and flow characteristics

Detailed Description

Walker 55685 is engineered as an OE-style exhaust resonator and pipe assembly for the Acura RDX. The resonator uses precise tuning to support factory-like exhaust tone while maintaining flow characteristics that align with the original system. Its steel construction and aluminized finish provide a service-ready replacement format for exhaust repair work.

For 2007-2012 Acura RDX models, this assembly is a direct replacement choice when the resonator or connected pipe section is damaged, corroded, or no longer sealing properly. The Walker 55685 part number is a useful reference when matching the correct exhaust resonator and pipe assembly for this vehicle platform.

This part cross-references AP Exhaust 58568 for the same application.

Common Issues This Part Addresses

  • Exhaust noise caused by a failing resonator
  • Rust or corrosion in the resonator and pipe section
  • Leaks at the flange or pipe connection
  • Loss of OE-style exhaust tone after component damage
  • Replacement needs for a welded exhaust assembly on Acura RDX models

Installation Notes and Tips

Fits 2007-2012 Acura RDX, N/A. If the original assembly is welded in place, replace all required related exhaust sections during service to restore proper alignment and sealing. Verify inlet flange style, outlet connection, and overall length before installation. The Walker 55685 part number should be matched to the vehicle’s exhaust configuration before ordering.

Quality Assurance

Walker designs this resonator assembly to fit, perform, and sound like the original system, using tuning methods aimed at OE-style exhaust behavior. The aluminized steel construction supports replacement use in standard exhaust repair applications.

Related reading

This part fits 6 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2012AcuraRDX2.3LL4N/AIf welded assembly, replace all required parts
2011AcuraRDX2.3LL4N/AIf welded assembly, replace all required parts
2010AcuraRDX2.3LL4N/AIf welded assembly, replace all required parts
2009AcuraRDX2.3LL4N/AIf welded assembly, replace all required parts
2008AcuraRDX2.3LL4N/AIf welded assembly, replace all required parts
2007AcuraRDX2.3LL4N/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 — 58568