XZR8®
Walker 16581 Catalytic Converter Assembly
Walker 16581 Catalytic Converter Assembly - Image 2
Walker 16581 Catalytic Converter Assembly - Image 3
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Walker 16581 Catalytic Converter Assembly


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Part NameFront Catalytic Converter
ConfigurationDirect Fit
Emission StandardEPA Federal
Body MaterialStainless Steel
Tubing MaterialAluminized Steel
Outlet Diameter2.74 in
Mounting StyleSingle Bolt Bracket with Locating Tab
Heat ShieldIntegrated
StatusNot Legal for CA, CO, NY
PositionFront
Net Weight12.5 kg
Package Dimensions60 × 30 × 20 cm

Manufacturer No.

  • 16581

OEM Part No.

  • 16581
  • 16796
  • 644015
  • 59521
  • 50507
  • 0795267
  • 324546
  • 23128664
  • 20910567
  • 642042
  • 52600
  • 50508
  • 52186
  • 25970320
  • 59582
  • 20871342
  • 22794837
  • 22741673
  • 25970315

Engine Part No.

  • GM 2.4L L4 LEA
  • GM 2.4L L4 LUK

Interchange No.

  • 644015
  • 59521
  • 50507
  • 0795267
  • 324546
  • 642042
  • 52600
  • 50508
  • 52186
  • 25970320
  • 59582
  • 20871342
  • 22794837
  • 22741673
  • 25970315

Fitment Vehicles

  • GMC Terrain 2010-2014
  • Chevrolet Equinox 2010-2014
  • Chevrolet Captiva Sport 2012-2015
Technical specifications for Walker Exhaust Ultra EPA direct-fit catalytic converter part number 16581. Designed as OEM replacement for front exhaust position on GM Theta platform vehicles equipped with 2.4L L4 engines. Features stainless steel converter body, aluminized steel inlet/outlet pipes, and factory-style mounting brackets with single-bolt support bracket and locating tab. Federal EPA compliant, not legal for California, Colorado, or New York registration. Direct bolt-on installation without welding or fabrication required. Cross-reference interchange includes OE numbers 16581, 16796, 644015, 59521, 50507, 0795267, 324546, 23128664, 20910567, 642042, 52600, 50508, 52186, 25970320, 59582, 20871342, 22794837, 22741673, 25970315. Compatible with Walker Ultra EPA series and Davico direct-fit equivalents.