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GMC Sierra 2500 Catalytic Converter Replacement

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  1. ✓ In Stock 2000 GMC Sierra 2500 Catalytic Converter (AP Exhaust)

    2000 GMC Sierra 2500 Catalytic Converter (AP Exhaust)

    Partslink #: 608216

    Universal Fit; EPA OBDII By Design Unit Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details. Federal and California Emissions

    $136.97 View part →
  2. ✓ In Stock 1999-2002 GMC Sierra 2500 Catalytic Converter - or Left or Right (Walker Exhaust)

    1999-2002 GMC Sierra 2500 Catalytic Converter - or Left or Right (Walker Exhaust)

    Partslink #: 93253

    with Federal/California Emissions System Not legal for sale or use in California and other CARB-compliant states. Legal in Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details. Ultra Universal Type Modifications and/or Additional Parts May Be Required for Installation

    $139.83 View part →
  3. ✓ In Stock 1999-2002 GMC Sierra 2500 Catalytic Converter - or Left (Magnaflow)

    1999-2002 GMC Sierra 2500 Catalytic Converter - or Left (Magnaflow)

    Partslink #: 99206HM

    Not legal for sale or installation in California, Colorado or New York. Cutting and Welding Required

    $194.00 View part →
  4. ✓ In Stock 1999-2002 GMC Sierra 2500 Catalytic Converter - Right (Walker Exhaust)

    1999-2002 GMC Sierra 2500 Catalytic Converter - Right (Walker Exhaust)

    Partslink #: 93239

    with Federal/California Emissions System Not legal for sale or use in California and other CARB-compliant states. Legal in Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details. Ultra Universal Type Modifications and/or Additional Parts May Be Required for Installation

    $175.55 View part →
  5. ✓ In Stock 1999-2002 GMC Sierra 2500 Catalytic Converter - or Left (Magnaflow)

    1999-2002 GMC Sierra 2500 Catalytic Converter - or Left (Magnaflow)

    Partslink #: 51206

    Not legal for sale or installation in California, Colorado or New York. Cutting and Welding Required

    $211.00 View part →
  6. ✓ In Stock 1999-2002 GMC Sierra 2500 Catalytic Converter - Left or Right (Magnaflow)

    1999-2002 GMC Sierra 2500 Catalytic Converter - Left or Right (Magnaflow)

    Partslink #: 99209HM

    Not legal for sale or installation in California, Colorado or New York. Cutting and Welding Required

    $194.00 View part →
  7. ✓ In Stock 2001-2004 GMC Sierra 2500 Catalytic Converter - Left or Rear (Eastern Catalytic)

    2001-2004 GMC Sierra 2500 Catalytic Converter - Left or Rear (Eastern Catalytic)

    Partslink #: 70857

    Federal Emissions; Undercar Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions)

    $284.49 View part →
  8. ✓ In Stock 1999-2002 GMC Sierra 2500 Catalytic Converter - Front Right or Left or Rear Right or Right (MagnaFlow Performance Exhaust)

    1999-2002 GMC Sierra 2500 Catalytic Converter - Front Right or Left or Rear Right or Right (MagnaFlow Performance Exhaust)

    Partslink #: 99209HM

    Cutting and Welding Required

    $194.00 View part →
  9. ✓ In Stock 2001-2002 GMC Sierra 2500 Catalytic Converter - Left (BRExhaust)

    2001-2002 GMC Sierra 2500 Catalytic Converter - Left (BRExhaust)

    Partslink #: 079-5167
    $534.86 View part →
  10. ✓ In Stock 1999-2002 GMC Sierra 2500 Catalytic Converter - Front Left or Left or Rear Left or Right (MagnaFlow Performance Exhaust)

    1999-2002 GMC Sierra 2500 Catalytic Converter - Front Left or Left or Rear Left or Right (MagnaFlow Performance Exhaust)

    Partslink #: 99206HM

    Cutting and Welding Required

    $194.00 View part →
  11. ✓ In Stock 2001-2002 GMC Sierra 2500 Catalytic Converter - Left (MagnaFlow Performance Exhaust)

    2001-2002 GMC Sierra 2500 Catalytic Converter - Left (MagnaFlow Performance Exhaust)

    Partslink #: 93622
    $546.00 View part →
  12. ✓ In Stock 2001-2002 GMC Sierra 2500 Catalytic Converter - Right (Magnaflow)

    2001-2002 GMC Sierra 2500 Catalytic Converter - Right (Magnaflow)

    Partslink #: 51209

    Replaces Front Pre-Converter and Rear Main Converter Not legal for sale or installation in California, Colorado or New York. Cutting and Welding Required

    $211.00 View part →
  13. ✓ In Stock 2001-2002 GMC Sierra 2500 Catalytic Converter - Left (Magnaflow)

    2001-2002 GMC Sierra 2500 Catalytic Converter - Left (Magnaflow)

    Partslink #: 93622

    Not legal for sale or installation in California, Colorado or New York.

    $546.00 View part →
  14. ✓ In Stock 1999-2000 GMC Sierra 2500 Catalytic Converter - Left or Right (MagnaFlow Performance Exhaust)

    1999-2000 GMC Sierra 2500 Catalytic Converter - Left or Right (MagnaFlow Performance Exhaust)

    Partslink #: 51206

    Cutting and Welding Required

    $211.00 View part →
  15. ✓ In Stock 1999-2000 GMC Sierra 2500 Catalytic Converter - or Left (AP Exhaust)

    1999-2000 GMC Sierra 2500 Catalytic Converter - or Left (AP Exhaust)

    Partslink #: 776106

    776 Series 4 in Round Body Engine Family Number (EFN) XGMXA06.0182 CARB Executive Order D-798-15 ; Universal Fit - CARB Legal Note: In Compliance with CARB Emissions Requirements 2.5 in Inlet ID; 2.5 in Outlet ID ALL

    $574.98 View part →
  16. ✓ In Stock 2004 GMC Sierra 2500 Catalytic Converter - Right (Magnaflow)

    2004 GMC Sierra 2500 Catalytic Converter - Right (Magnaflow)

    Partslink #: 51309

    with Federal Emissions System Not legal for sale or installation in California, Colorado or New York. Cutting and Welding Required

    $220.00 View part →
  17. ✓ In Stock 2001-2002 GMC Sierra 2500 Catalytic Converter - Left (MagnaFlow Performance Exhaust)

    2001-2002 GMC Sierra 2500 Catalytic Converter - Left (MagnaFlow Performance Exhaust)

    Partslink #: 49667
    $594.00 View part →
  18. ✓ In Stock 2001-2002 GMC Sierra 2500 Catalytic Converter - Left or Right (MagnaFlow Performance Exhaust)

    2001-2002 GMC Sierra 2500 Catalytic Converter - Left or Right (MagnaFlow Performance Exhaust)

    Partslink #: 99009HM

    Cutting and Welding Required During Installation

    $242.00 View part →
  19. ✓ In Stock 2001-2002 GMC Sierra 2500 Catalytic Converter - Left (Magnaflow)

    2001-2002 GMC Sierra 2500 Catalytic Converter - Left (Magnaflow)

    Partslink #: 49667

    Not legal for sale or installation in California, Colorado or New York.

    $594.00 View part →
  20. ✓ In Stock 2001-2002 GMC Sierra 2500 Catalytic Converter - Left or Right (Magnaflow)

    2001-2002 GMC Sierra 2500 Catalytic Converter - Left or Right (Magnaflow)

    Partslink #: 99009HM

    Cutting and Welding Required During Installation

    $242.00 View part →
  21. ✓ In Stock 1999-2000 GMC Sierra 2500 Catalytic Converter - Left (MagnaFlow Performance Exhaust)

    1999-2000 GMC Sierra 2500 Catalytic Converter - Left (MagnaFlow Performance Exhaust)

    Partslink #: 24147
    $992.00 View part →
  22. ✓ In Stock 2001-2002 GMC Sierra 2500 Catalytic Converter - Left or Right (MagnaFlow Performance Exhaust)

    2001-2002 GMC Sierra 2500 Catalytic Converter - Left or Right (MagnaFlow Performance Exhaust)

    Partslink #: 51009

    Cutting and Welding Required During Installation

    $252.00 View part →
  23. ✓ In Stock 1999-2000 GMC Sierra 2500 Catalytic Converter - Left (Magnaflow)

    1999-2000 GMC Sierra 2500 Catalytic Converter - Left (Magnaflow)

    Partslink #: 24147

    Not legal for sale or installation in California, Colorado or New York.

    $992.00 View part →
  24. ✓ In Stock 2001-2002 GMC Sierra 2500 Catalytic Converter - Left or Right (Magnaflow)

    2001-2002 GMC Sierra 2500 Catalytic Converter - Left or Right (Magnaflow)

    Partslink #: 51009

    Cutting and Welding Required During Installation

    $252.00 View part →
  25. ✓ In Stock 2001 GMC Sierra 2500 Catalytic Converter - Left (Magnaflow)

    2001 GMC Sierra 2500 Catalytic Converter - Left (Magnaflow)

    Partslink #: 447270

    CARB Executive Order D-193-103 Engine Family Number (EFN) 1GMXA06.0188 Legal For Sale In All 50 States Including California, Colorado and New York (CARB Certified)

    $1,035.00 View part →
  26. ✓ In Stock 1999-2000 GMC Sierra 2500 Catalytic Converter - Left or Right (AP Exhaust)

    1999-2000 GMC Sierra 2500 Catalytic Converter - Left or Right (AP Exhaust)

    Partslink #: 912005R

    91 Series Engine Family Number (EFN) XGMXA05.3185 CARB Executive Order D-280-101 ; Universal Fit - CARB Legal Note: In Compliance with CARB Emissions Requirements 2.25 in Inlet ID; 2.25 in Outlet ID; Round Body; 16 in OAL ALL

    $321.50 View part →
  27. ✓ In Stock 2001 GMC Sierra 2500 Catalytic Converter - Left (MagnaFlow Performance Exhaust)

    2001 GMC Sierra 2500 Catalytic Converter - Left (MagnaFlow Performance Exhaust)

    Partslink #: 447270

    CARB Executive Order D-193-103 Engine Family Number (EFN) 1GMXA06.0188

    $1,127.00 View part →
  28. ✓ In Stock 2004 GMC Sierra 2500 Catalytic Converter - Right (Magnaflow)

    2004 GMC Sierra 2500 Catalytic Converter - Right (Magnaflow)

    Partslink #: 21-989

    with Federal Emissions System Not legal for sale or installation in California, Colorado or New York.

    $365.00 View part →
  29. ✓ In Stock 2004 GMC Sierra 2500 Catalytic Converter - Right (MagnaFlow Performance Exhaust)

    2004 GMC Sierra 2500 Catalytic Converter - Right (MagnaFlow Performance Exhaust)

    Partslink #: 21-989

    with Federal Emissions System

    $365.00 View part →
  30. ✓ In Stock 1999 GMC Sierra 2500 Catalytic Converter - Right (Walker Exhaust)

    1999 GMC Sierra 2500 Catalytic Converter - Right (Walker Exhaust)

    Partslink #: 83509

    Engine Family Number (EFN) XGMXT06.0181 Not legal for sale or use in California. Legal for sale in other CARB-compliant states for use on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details Universal Type CARB Executive Order D-182-69 Modifications and/or Additional Parts May Be Required for Installation

    $392.57 View part →
  31. ✓ In Stock 2001-2003 GMC Sierra 2500 Catalytic Converter - Rear Left or Rear Right (Magnaflow)

    2001-2003 GMC Sierra 2500 Catalytic Converter - Rear Left or Rear Right (Magnaflow)

    Partslink #: 447209

    CARB Executive Order D-193-103 Engine Family Number (EFN) 3GMXA06.0188 Cutting and Welding Required Legal For Sale In All 50 States Including California, Colorado and New York (CARB Certified)

    $425.00 View part →
  32. ✓ In Stock 2001-2003 GMC Sierra 2500 Catalytic Converter - Rear Left or Rear Right (MagnaFlow Performance Exhaust)

    2001-2003 GMC Sierra 2500 Catalytic Converter - Rear Left or Rear Right (MagnaFlow Performance Exhaust)

    Partslink #: 447209

    CARB Executive Order D-193-103 Engine Family Number (EFN) 3GMXA06.0188 Cutting and Welding Required

    $425.00 View part →
  33. ✓ In Stock 1999-2002 GMC Sierra 2500 Catalytic Converter - Right (Magnaflow)

    1999-2002 GMC Sierra 2500 Catalytic Converter - Right (Magnaflow)

    Partslink #: 24148

    without Pre-Converter Not legal for sale or installation in California, Colorado or New York.

    $556.00 View part →
  34. ✓ In Stock 1999-2002 GMC Sierra 2500 Catalytic Converter - Right (MagnaFlow Performance Exhaust)

    1999-2002 GMC Sierra 2500 Catalytic Converter - Right (MagnaFlow Performance Exhaust)

    Partslink #: 24148

    without Pre-Converter

    $556.00 View part →
  35. ✓ In Stock 2001-2003 GMC Sierra 2500 Catalytic Converter - Front Left or Front Right (MagnaFlow Performance Exhaust)

    2001-2003 GMC Sierra 2500 Catalytic Converter - Front Left or Front Right (MagnaFlow Performance Exhaust)

    Partslink #: 447109

    CARB Executive Order D-193-103 Engine Family Number (EFN) 3GMXA06.0188 Cutting and Welding Required

    $570.00 View part →
  36. ✓ In Stock 2001-2003 GMC Sierra 2500 Catalytic Converter - Front Left or Front Right (Magnaflow)

    2001-2003 GMC Sierra 2500 Catalytic Converter - Front Left or Front Right (Magnaflow)

    Partslink #: 447109

    CARB Executive Order D-193-103 Engine Family Number (EFN) 3GMXA06.0188 Cutting and Welding Required Legal For Sale In All 50 States Including California, Colorado and New York (CARB Certified)

    $570.00 View part →
  37. ✓ In Stock 2004 GMC Sierra 2500 Catalytic Converter - Front Left or Front Right or Rear Left or Rear Right (MagnaFlow Performance Exhaust)

    2004 GMC Sierra 2500 Catalytic Converter - Front Left or Front Right or Rear Left or Rear Right (MagnaFlow Performance Exhaust)

    Partslink #: 445009

    CARB Executive Order D-193-100 Engine Family Number (EFN) 4GMXT06.0188 Cutting and Welding Required

    $603.00 View part →
  38. ✓ In Stock 1999-2000 GMC Sierra 2500 Catalytic Converter - Left or Right (MagnaFlow Performance Exhaust)

    1999-2000 GMC Sierra 2500 Catalytic Converter - Left or Right (MagnaFlow Performance Exhaust)

    Partslink #: 445006

    CARB Executive Order D-193-100 Engine Family Number (EFN) XGMXA05.3183 Engine Family Number (EFN) XGMXA05.3185 Cutting and Welding Required

    $603.00 View part →
  39. ✓ In Stock 1999-2000 GMC Sierra 2500 Catalytic Converter - Left or Right (Magnaflow)

    1999-2000 GMC Sierra 2500 Catalytic Converter - Left or Right (Magnaflow)

    Partslink #: 445006

    CARB Executive Order D-193-100 Engine Family Number (EFN) XGMXA05.3183 Engine Family Number (EFN) XGMXA05.3185 Cutting and Welding Required Legal For Sale In All 50 States Including California, Colorado and New York (CARB Certified)

    $603.00 View part →
  40. ✓ In Stock 2001-2002 GMC Sierra 2500 Catalytic Converter - Right (Magnaflow)

    2001-2002 GMC Sierra 2500 Catalytic Converter - Right (Magnaflow)

    Partslink #: 93623

    Replaces Front Pre-Converter and Rear Main Converter Not legal for sale or installation in California, Colorado or New York.

    $623.00 View part →
  41. ✓ In Stock 2001-2002 GMC Sierra 2500 Catalytic Converter - Right (MagnaFlow Performance Exhaust)

    2001-2002 GMC Sierra 2500 Catalytic Converter - Right (MagnaFlow Performance Exhaust)

    Partslink #: 93623

    Replaces Front Pre-Converter and Rear Main Converter

    $623.00 View part →
  42. ✓ In Stock 2001-2002 GMC Sierra 2500 Catalytic Converter - Right (Magnaflow)

    2001-2002 GMC Sierra 2500 Catalytic Converter - Right (Magnaflow)

    Partslink #: 49668

    Replaces Front Pre-Converter and Rear Main Converter Not legal for sale or installation in California, Colorado or New York.

    $679.00 View part →
  43. ✓ In Stock 2001-2002 GMC Sierra 2500 Catalytic Converter - Right (MagnaFlow Performance Exhaust)

    2001-2002 GMC Sierra 2500 Catalytic Converter - Right (MagnaFlow Performance Exhaust)

    Partslink #: 49668

    Replaces Front Pre-Converter and Rear Main Converter

    $679.00 View part →
  44. ✓ In Stock 2001-2002 GMC Sierra 2500 Catalytic Converter - Right (Magnaflow)

    2001-2002 GMC Sierra 2500 Catalytic Converter - Right (Magnaflow)

    Partslink #: 447283

    CARB Executive Order D-193-103 Engine Family Number (EFN) 1GMXA06.0188 Legal For Sale In All 50 States Including California, Colorado and New York (CARB Certified)

    $1,151.00 View part →
  45. ✓ In Stock 2001-2002 GMC Sierra 2500 Catalytic Converter - Right (MagnaFlow Performance Exhaust)

    2001-2002 GMC Sierra 2500 Catalytic Converter - Right (MagnaFlow Performance Exhaust)

    Partslink #: 447283

    CARB Executive Order D-193-103 Engine Family Number (EFN) 1GMXA06.0188

    $1,253.00 View part →
  46. ✓ In Stock 1999-2000 GMC Sierra 2500 Catalytic Converter (Eastern Catalytic)

    1999-2000 GMC Sierra 2500 Catalytic Converter (Eastern Catalytic)

    Partslink #: 83166

    Undercar Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions)

    $169.76 View part →
  47. ✓ In Stock 2001-2003 GMC Sierra 2500 Catalytic Converter (AP Exhaust)

    2001-2003 GMC Sierra 2500 Catalytic Converter (AP Exhaust)

    Partslink #: 606007

    Universal Fit; Pre-OBDII Super Duty Unit Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details. Federal Emissions

    $310.31 View part →
  48. ✓ In Stock 1999-2000 GMC Sierra 2500 Catalytic Converter (Eastern Catalytic)

    1999-2000 GMC Sierra 2500 Catalytic Converter (Eastern Catalytic)

    Partslink #: 50366

    Undercar Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions)

    $417.51 View part →
  49. ✓ In Stock 2000 GMC Sierra 2500 Catalytic Converter (AP Exhaust)

    2000 GMC Sierra 2500 Catalytic Converter (AP Exhaust)

    Partslink #: 645236

    Direct Fit; Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details. IMPORTANT: Read TSBs Before Replacing Converter Federal and California Emissions

    $417.51 View part →
  50. ✓ In Stock 1999-2000 GMC Sierra 2500 Catalytic Converter (MagnaFlow Performance Exhaust)

    1999-2000 GMC Sierra 2500 Catalytic Converter (MagnaFlow Performance Exhaust)

    Partslink #: 93419
    $648.00 View part →
  51. ✓ In Stock 1999-2000 GMC Sierra 2500 Catalytic Converter (Magnaflow)

    1999-2000 GMC Sierra 2500 Catalytic Converter (Magnaflow)

    Partslink #: 93419

    Not legal for sale or installation in California, Colorado or New York.

    $648.00 View part →
  52. ✓ In Stock 1999-2000 GMC Sierra 2500 Catalytic Converter (MagnaFlow Performance Exhaust)

    1999-2000 GMC Sierra 2500 Catalytic Converter (MagnaFlow Performance Exhaust)

    Partslink #: 51097
    $680.00 View part →
  53. ✓ In Stock 1999-2000 GMC Sierra 2500 Catalytic Converter (Magnaflow)

    1999-2000 GMC Sierra 2500 Catalytic Converter (Magnaflow)

    Partslink #: 51097

    Not legal for sale or installation in California, Colorado or New York.

    $680.00 View part →
  54. ✓ In Stock 2000 GMC Sierra 2500 Catalytic Converter (AP Exhaust)

    2000 GMC Sierra 2500 Catalytic Converter (AP Exhaust)

    Partslink #: 912083

    91 Series Engine Family Number (EFN) YGMXT05.3181 CARB Executive Order D-280-101 ; Direct Fit - CARB Legal Note: In Compliance with CARB Emissions Requirements ALL

    $1,255.07 View part →
  55. ✓ In Stock 1999-2000 GMC Sierra 2500 Catalytic Converter (Walker Exhaust)

    1999-2000 GMC Sierra 2500 Catalytic Converter (Walker Exhaust)

    Partslink #: 81761

    CARB Executive Order D-182-52 Engine Family Number (EFN) XGMXA05.3185 Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details. Additional part(s) needed to complete installation - 31554 Right Hand Side and 31718 Left Hand Side Direct Fit Type

    $1,725.49 View part →
  56. ✓ In Stock 2000 GMC Sierra 2500 Catalytic Converter (MagnaFlow Performance Exhaust)

    2000 GMC Sierra 2500 Catalytic Converter (MagnaFlow Performance Exhaust)

    Partslink #: 4451419

    CARB Executive Order D-193-136 Engine Family Number (EFN) YGMXT05.3181 Engine Family Number (EFN) YGMXA05.3183

    $2,398.00 View part →
  57. ✓ In Stock 2000 GMC Sierra 2500 Catalytic Converter (Magnaflow)

    2000 GMC Sierra 2500 Catalytic Converter (Magnaflow)

    Partslink #: 4451419

    CARB Executive Order D-193-136 Engine Family Number (EFN) YGMXT05.3181 Engine Family Number (EFN) YGMXA05.3183 Legal For Sale In All 50 States Including California, Colorado and New York (CARB Certified)

    $2,398.00 View part →

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Catalytic Converter Compatibility for GMC Sierra 2500

Browse our selection of quality catalytic converter parts designed specifically for your GMC Sierra 2500. We carry options across multiple trim levels, body styles, and engine configurations to ensure a perfect fit.

Available Trims

Base · SL · SLE · SLT · WT

Body Types

Cab & Chassis · Crew Cab Pickup · Extended Cab Pickup · Standard Cab Pickup

Engine Options

V8 5.3L · V8 6.0L

Transmissions

Automatic · Manual

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