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GMC Sierra 2500 Catalytic Converter Reviews
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Shop GMC Sierra 2500 Replacement Catalytic Converter

Search our online catalytic converter catalog and find the lowest priced discount auto parts on the web. We sell wholesale to the public. We offer high quality new, OEM, aftermarket and remanufactured GMC Sierra 2500 Catalytic Converter parts. We specialize in a wide-variety of high-quality car parts and accessories for your car, truck or SUV. Call toll free to order or place your order online via our secure checkout system. Our online parts catalog uses real-time inventory, so you can be assured the parts you buy are in stock at the time of ordering. Most orders are shipped the same day.

We stock these Catalytic Converter brands for the GMC Sierra 2500: ReplacementWalkerEastern CatalyticBosalAPIMagnaflow

Select your Sierra 2500 year

Review Fitment Notes
Showing 18 of 131 Results
Front Replacement Catalytic Converter - for 2000 GMC Sierra 2500 5.3L V8 - N01-303S Click to Enlarge
5 Stars
Replacement N01-303S
Catalytic Converter
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Part Number: N01-303S
Brand: Replacement
Notes: Catalytic Converter -- Direct-Fit Dual Catalytic Converter Assembly Kit with Gaskets and Clamp; 50.5 in. Overall Length; Aluminized Steel; OBD-II & EPA Approved
Product Remark: {We currently do not ship this catalytic converter to California or New York}
Position: Front
Condition: New
Shipping Options: Free Ground Shipping
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$298.95
with FREE Shipping
View Details
This Part Fits:
Catalog: E
Vehicle Engine
2000 GMC Sierra 2500 5.3L V8
Left Walker Catalytic Converter - for 2000 GMC Sierra 2500 6.0L V8 - 55335 Click to Enlarge
5 Stars
Walker 55335
Catalytic Converter
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Part Number: 55335
Brand: Walker
Notes: EPA -- Except Heavy Duty; Fits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Ultra Direct Fit Type
  • Designed for use on OBDII (1996 and newer) vehicles
  • Flange to flange, direct fit design bolts to existing exhaust
  • High precious metal load and high technology washcoat for premium performance
  • Stainless steel body with aluminized pipe and heat shields for durability
  • Thick OE-style flanges, hangers and brackets for enhanced strength
  • OE-style routing and hanger position for easy installation
  • 25,000-mi catalytic performance & 5-year/50,000-mi structural integrity warranty
  • Meets EPA emissions requirements
  • Not legal for sale in California
Position: Left
Condition: New
Product Grade: Economy
Fitment: Direct Fit
Body Material: Stainless Steel
Substrate Material: Ceramic
Shipping Options: Ground
5 Year / 50,000 Mile Walker Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$501.43
(2) In Stock
This Part Fits:
Catalog: B
Vehicle Engine Wheel Base
2000 GMC Sierra 2500 6.0L V8 143.5
Eastern Catalytic Catalytic Converter - for 1999 GMC Sierra 2500 5.3L V8 - 83166 Click to Enlarge
4.9 Stars
Eastern Catalytic 83166
Catalytic Converter
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Part Number: 83166
Brand: Eastern Catalytic
Notes: UNIVERSAL -- Undercar; Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions)
  • Federal / EPA Semi-Universal Converter - ECO II
Condition: New
Shipping Options: Ground
5 Year / 50,000 Mile Eastern Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$162.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1999 GMC Sierra 2500 5.3L V8
Right Bosal Catalytic Converter - for 2001 GMC Sierra 2500 6.0L V8 - 079-5166 Click to Enlarge
5 Stars
Bosal 079-5166
Catalytic Converter
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Part Number: 079-5166
Brand: Bosal
Notes: BRExhaust Federal Direct-Fit Premium Load OBDII Catalytic Converter
Position: Right
Condition: New
Body Material: Stainless Steel
Material: Stainless Steel
Series: Premium Load
Type: Federal / EPA Compliant
Type: Direct-Fit
Finish: Stainless Steel
Mounting Hardware Included: Yes
Shipping Options: Ground
5 Year / 25,000 Mile Bosal Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$550.43
View Details
This Part Fits:
Catalog: B
Vehicle Engine
2001 GMC Sierra 2500 6.0L V8
Left Bosal Catalytic Converter - for 2001 GMC Sierra 2500 6.0L V8 - 079-5167 Click to Enlarge
5 Stars
Bosal 079-5167
Catalytic Converter
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Part Number: 079-5167
Brand: Bosal
Notes: BRExhaust Federal Direct-Fit Premium Load OBDII Catalytic Converter
Position: Left
Condition: New
Body Material: Stainless Steel
Material: Stainless Steel
Series: Premium Load
Type: Federal / EPA Compliant
Type: Direct-Fit
Finish: Stainless Steel
Mounting Hardware Included: Yes
Shipping Options: Ground
5 Year / 25,000 Mile Bosal Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$483.43
View Details
This Part Fits:
Catalog: B
Vehicle Engine
2001 GMC Sierra 2500 6.0L V8
Right Walker Catalytic Converter - for 2004 GMC Sierra 2500 6.0L V8 - 83404 Click to Enlarge
Website Reviews
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Part Number: 83404
Brand: Walker
Notes: CalCat -- CARB Executive Order D-182-69; Engine Family Number (EFN) 4GMXH06.0583; 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.; Universal Type; Modifications and/or Additional Parts May Be Required for Installation
  • CARB COMPLIANT -- For use on OBDII vehicles, 1996 and newer and non-OBD 1995 and older. Legal for sale in CA, CO & other states requiring CARB-compliant replacement converters. Consult your state's aftermarket converter regulations.
  • SUPERIOR TECHNOLOGY -- Optimal high technology washcoat formulated to deliver superior performance (as compared to EPA-compliant converters)
  • CONSISTENT PERFORMANCE -- Utilizes a precise OE-style coating process to apply catalyst material to the substrate, providing consistent performance for assured emissions compliance
  • DURABLE -- Features stainless-steel body with aluminized pipe and heat shields for durability
  • FLEXIBLE SOLUTION -- Customizable design features expandable bushings for easy fitment and may require specialized fabrication and/or welding for installation
  • BUY WITH CONFIDENCE -- Backed by Walker's 50,000-mile/80,000-kilometer emissions and structural integrity warranty
Position: Right
Condition: New
Body Material: Stainless Steel
California Air Resources Board (CARB) Certified: Yes
Shipping Options: Ground
5 Year / 50,000 Mile Walker Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$347.43
(48) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2004 GMC Sierra 2500 6.0L V8
Rear Right Walker Catalytic Converter - for 2003 GMC Sierra 2500 6.0L V8 - 81724 Click to Enlarge
Website Reviews
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Part Number: 81724
Brand: Walker
Notes: CalCat -- CARB Executive Order D-182-52; Engine Family Number (EFN) 3GMXA06.0188; 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.; Universal Type; Modifications and/or Additional Parts May Be Required for Installation
  • CARB COMPLIANT -- For use on OBDII vehicles, 1996 and newer and non-OBD 1995 and older. Legal for sale in CA, CO & other states requiring CARB-compliant replacement converters. Consult your state's aftermarket converter regulations.
  • SUPERIOR TECHNOLOGY -- Optimal high technology washcoat formulated to deliver superior performance (as compared to EPA-compliant converters)
  • CONSISTENT PERFORMANCE -- Utilizes a precise OE-style coating process to apply catalyst material to the substrate, providing consistent performance for assured emissions compliance
  • DURABLE -- Features stainless-steel body with aluminized pipe and heat shields for durability
  • FLEXIBLE SOLUTION -- Customizable design features expandable bushings for easy fitment and may require specialized fabrication and/or welding for installation
  • BUY WITH CONFIDENCE -- Backed by Walker's 50,000-mile/80,000-kilometer emissions and structural integrity warranty
Position: Rear Right
Condition: New
Body Material: Stainless Steel
California Air Resources Board (CARB) Certified: Yes
Shipping Options: Ground
5 Year / 50,000 Mile Walker Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$732.43
(6) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2003 GMC Sierra 2500 6.0L V8
Left Bosal Catalytic Converter - for 2002 GMC Sierra 2500 6.0L V8 - 093-2031 Click to Enlarge
5 Stars
Bosal 093-2031
Catalytic Converter
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Part Number: 093-2031
Brand: Bosal
Notes: BRExhaust Federal Universal Standard Load OBDII Catalytic Converter -- Cutting and Welding Required During Installation
Position: Left
Condition: New
Material: Stainless Steel
Shipping Options: Ground
5 Year / 25,000 Mile Bosal Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$167.43
View Details
This Part Fits:
Catalog: B
Vehicle Engine
2002 GMC Sierra 2500 6.0L V8
Right Bosal Catalytic Converter - for 2001 GMC Sierra 2500 6.0L V8 - 064-5159 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 064-5159
Brand: Bosal
Notes: BRExhaust CARB Direct-Fit OBDII Catalytic Converter -- Certification Level : LEV1 LEV; CARB Executive Order D-193-103; Engine Family Number 1GMXA06.0188
Position: Right
Condition: New
Finish: Stainless Steel
Material: Stainless Steel
Type: California / CARB Compliant
Type: Direct-Fit
Series: California
Body Material: Stainless Steel
Mounting Hardware Included: Yes
Shipping Options: Ground
5 Year / 25,000 Mile Bosal Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$1,035.43
(1) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2001 GMC Sierra 2500 6.0L V8
no image
Website Reviews
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Part Number: 4262-02583699
Brand: API
Notes: OES -- EPA Federal Compliant-Standard Loading Catalyst- Not Legal for sale or use in California. Legal in NY and ME on EPA Federal Emmision Equipped Vehicles Only; Universal; Dual Convs. Without Flat Spot in Middle Pipe
Condition: New
Shipping Options: Ground
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$75.98
(25) In Stock
This Part Fits:
Catalog: P
Vehicle Engine
1999 GMC Sierra 2500 5.3L V8
Rear Right Walker Catalytic Converter - for 2004 GMC Sierra 2500 6.0L V8 - 81724 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 81724
Brand: Walker
Notes: CalCat -- CARB Executive Order D-182-52; Engine Family Number (EFN) 4GMXT06.0188; 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.; Universal Type; Modifications and/or Additional Parts May Be Required for Installation
  • CARB COMPLIANT -- For use on OBDII vehicles, 1996 and newer and non-OBD 1995 and older. Legal for sale in CA, CO & other states requiring CARB-compliant replacement converters. Consult your state's aftermarket converter regulations.
  • SUPERIOR TECHNOLOGY -- Optimal high technology washcoat formulated to deliver superior performance (as compared to EPA-compliant converters)
  • CONSISTENT PERFORMANCE -- Utilizes a precise OE-style coating process to apply catalyst material to the substrate, providing consistent performance for assured emissions compliance
  • DURABLE -- Features stainless-steel body with aluminized pipe and heat shields for durability
  • FLEXIBLE SOLUTION -- Customizable design features expandable bushings for easy fitment and may require specialized fabrication and/or welding for installation
  • BUY WITH CONFIDENCE -- Backed by Walker's 50,000-mile/80,000-kilometer emissions and structural integrity warranty
Position: Rear Right
Condition: New
Body Material: Stainless Steel
California Air Resources Board (CARB) Certified: Yes
Shipping Options: Ground
5 Year / 50,000 Mile Walker Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$732.43
(6) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2004 GMC Sierra 2500 6.0L V8
Front Left Walker Catalytic Converter - for 2003 GMC Sierra 2500 6.0L V8 - 83404 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 83404
Brand: Walker
Notes: CalCat -- CARB Executive Order D-182-69; Engine Family Number (EFN) 3GMXA06.0188; 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.; Universal Type; Modifications and/or Additional Parts May Be Required for Installation
  • CARB COMPLIANT -- For use on OBDII vehicles, 1996 and newer and non-OBD 1995 and older. Legal for sale in CA, CO & other states requiring CARB-compliant replacement converters. Consult your state's aftermarket converter regulations.
  • SUPERIOR TECHNOLOGY -- Optimal high technology washcoat formulated to deliver superior performance (as compared to EPA-compliant converters)
  • CONSISTENT PERFORMANCE -- Utilizes a precise OE-style coating process to apply catalyst material to the substrate, providing consistent performance for assured emissions compliance
  • DURABLE -- Features stainless-steel body with aluminized pipe and heat shields for durability
  • FLEXIBLE SOLUTION -- Customizable design features expandable bushings for easy fitment and may require specialized fabrication and/or welding for installation
  • BUY WITH CONFIDENCE -- Backed by Walker's 50,000-mile/80,000-kilometer emissions and structural integrity warranty
Position: Front Left
Condition: New
Body Material: Stainless Steel
California Air Resources Board (CARB) Certified: Yes
Shipping Options: Ground
5 Year / 50,000 Mile Walker Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$347.43
(48) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2003 GMC Sierra 2500 6.0L V8
Right Bosal Catalytic Converter - for 2002 GMC Sierra 2500 6.0L V8 - 064-5159 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 064-5159
Brand: Bosal
Notes: BRExhaust CARB Direct-Fit OBDII Catalytic Converter -- Certification Level : LEV1 LEV; CARB Executive Order D-193-103; Engine Family Number 2TJXT06.0188
Position: Right
Condition: New
Finish: Stainless Steel
Material: Stainless Steel
Type: California / CARB Compliant
Type: Direct-Fit
Series: California
Body Material: Stainless Steel
Mounting Hardware Included: Yes
Shipping Options: Ground
5 Year / 25,000 Mile Bosal Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$1,035.43
(1) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2002 GMC Sierra 2500 6.0L V8
Left Walker Catalytic Converter - for 2002 GMC Sierra 2500 6.0L V8 - 93253 Click to Enlarge
5 Stars
Walker 93253
Catalytic Converter
Loading Reviews...
Part Number: 93253
Brand: Walker
Notes: EPA -- Fits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and 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
  • Designed for use on OBDII (1996 and newer) vehicles
  • Stainless steel body with aluminized pipe and heat shields for durability
  • Expandable bushings for custom installation requirements
  • Universal converter may require modification to complete installation
  • 25,000-mi catalytic performance & 5-year/50,000-mi structural integrity warranty
  • Meets EPA emissions requirements
  • Not legal for sale in California
Position: Left
Condition: New
Product Grade: Economy
Fitment: Universal
Body Material: Stainless Steel
Substrate Material: Ceramic
Air Tube: No
Shipping Options: Ground
5 Year / 50,000 Mile Walker Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$217.08
(8) In Stock
This Part Fits:
Catalog: H
Vehicle Engine
2002 GMC Sierra 2500 6.0L V8
Left Bosal Catalytic Converter - for 2001 GMC Sierra 2500 6.0L V8 - 064-5158 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 064-5158
Brand: Bosal
Notes: BRExhaust CARB Direct-Fit OBDII Catalytic Converter -- Certification Level : LEV1 LEV; CARB Executive Order D-193-103; Engine Family Number 1GMXA06.0188
Position: Left
Condition: New
Finish: Stainless Steel
Material: Stainless Steel
Type: Direct-Fit
Type: California / CARB Compliant
Body Material: Stainless Steel
Series: California
Mounting Hardware Included: Yes
Shipping Options: Ground
5 Year / 25,000 Mile Bosal Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$931.43
View Details
This Part Fits:
Catalog: B
Vehicle Engine
2001 GMC Sierra 2500 6.0L V8
Left Magnaflow Catalytic Converter - for 2002 GMC Sierra 2500 6.0L V8 - 99009HM Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 99009HM
Brand: Magnaflow
Notes: Universal HM Grade Federal (Exc. CA) -- Cutting and Welding Required During Installation
Position: Left
Condition: New
Body Material: Stainless Steel
Material: Stainless Steel
Series: HM Grade
Heat Shield Included: Yes
Shipping Options: Free Ground Shipping
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$233.00
with FREE Shipping
(5) In Stock
This Part Fits:
Catalog: F
Vehicle Engine
2002 GMC Sierra 2500 6.0L V8
Bosal Catalytic Converter - for 2000 GMC Sierra 2500 5.3L V8 - W0133-1978041 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: W0133-1978041
Brand: Bosal
Notes: Y-Pipe Assembly w/ 2 Catalytic Converters This converter contains "premium load" catalyst material with higher noble metal content for better emission performance. EPA Compliant - (48-State & Canada) EPA Tier 0 & Tier 1 emission use.
Detailed Notes: Not legal for sale or use in California and New York
Condition: New
Shipping Options: Ground, Overnight, 2 Day
5 Year / 25,000 Mile Bosal Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
List Price:
$871.99
Our Price: $785.58
(4) In Stock
This Part Fits:
Catalog: A
Vehicle Engine
2000 GMC Sierra 2500 5.3L V8
Front Left Magnaflow Catalytic Converter - for 2004 GMC Sierra 2500 6.0L V8 - 4451309 Click to Enlarge
Website Reviews
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Part Number: 4451309
Brand: Magnaflow
Notes: 3in. Universal California OBDII Catalytic Converter -- Certification Level : LEV1 LEV; OE Spec; Cutting and Welding Required During Installation; CARB Executive Order D-193-136; Engine Family Number 4GMXT06.0188
Position: Front Left
Condition: New
Series: California
Material: Stainless Steel
Shipping Options: Ground
*** Legal in California, Colorado, New York, and Maine ***
$648.98
(5) In Stock
This Part Fits:
Catalog: C
Vehicle Engine
2004 GMC Sierra 2500 6.0L V8

Related Exhaust Parts

Catalytic Converters available for the following GMC Sierra 2500 years: 2002, 2001, 2000, 1999, 02, 01, 00, 99. This part is also sometimes called GMC Sierra 2500 Exhaust Converters. We stock catalytic converter parts for most GMC models including Sierra 1500, Yukon, Acadia, Yukon XL 1500, K1500, Sonoma, Jimmy, C1500, Envoy, Terrain, K1500 Suburban, Safari, Envoy XL, Savana 3500, Sierra 2500 HD, Canyon, Savana 1500, Envoy XUV, Savana 2500, Yukon XL, C1500 Suburban, K2500, Sierra 1500 Classic, C2500, Yukon XL 2500, K3500, W3500 Forward, K2500 Suburban, S15, G2500, Sierra 3500 HD, C3500, G3500, Sierra 3500, Sierra 1500 HD, S15 Jimmy, Caballero, Sierra 2500 HD Classic, G1500 and Sierra 3500 Classic.

Some of our Customer Reviews
Verified Customer
11/20/08 11:09 AM - USA

fast, accurate, and easily navigated website - HeatherLPlatt

Verified Customer
10/15/09 08:40 PM - USA

Part arrived quickly and in good shape. Good price for a good product. Thanks! - EVTiger