GMC Sierra 3500 Catalytic Converter

Eastern ECO II Series Catalytic Converter

30 years of innovation is proof enough that Eastern is the best manufacturer of the finest aftermarket and original equipment catalytic converters on the market. Their ECO Series Catalytic Converters which are designed to help keep the Check Engine Light (MIL) off is another set of catalytic converters with world class quality.

The Eastern ECO II Series Catalytic Converter is made specifically for most complex or second generation on board diagnostic (OBD II) systems. It features wash coats with greater loadings of precious metals to handle applications with ultra low emissions, higher than normal emissions, as well as vehicles with higher mileage and heavier workloads.

The Eastern ECO II Series Catalytic Converter's features in a nutshell:

• Engineered with Eastern's proprietary NANO technology yielding highly efficient loadings for lower cost and better converter efficiency
• Features an advanced materials design for maximum engine output and performance

Specifications:

• 3-way style
• Flange inlet
• Standard assembly with two catalytic converters
• Round body
• Single inlet and outlet configuration

Notes:

• 49-state legal; Not legal in California and other states adopting California Emissions Standards; Not for sale or use in California and other states adopting California Emissions Standards; Cannot be shipped to California and such states

Fits the following 2003-2006 GMC Sierra 3500 submodels:

• 2006-2006: SL; 8 Cyl 6.0L;
• 2006-2006: SL; 8 Cyl 8.1L;

• 2004-2006: WT; 8 Cyl 6.0L;

• 2004-2006: WT; 8 Cyl 8.1L;

• 2003-2006: SLE; 8 Cyl 6.0L;

• 2003-2006: SLE; 8 Cyl 8.1L;

• 2003-2006: SLT; 8 Cyl 6.0L;

• 2003-2006: SLT; 8 Cyl 8.1L;

• 2003-2005: Base; 8 Cyl 6.0L;

• 2003-2005: Base; 8 Cyl 8.1L;

Fits 8 more submodels. (Show all) Show less info

MAGNAFLOW 50-STATE SEMI-UNIVERSAL CATALYTIC CONVERTER

• 50-State Legal
• Semi-universal design – cut out your old catalytic converter and weld in the new one
• Stainless Steel Construction
• Legendary Magnaflow quality, power, and sound
• Ceramic, honeycomb catalyst designed for maximum flow and surface area

When you want the best, you want Magnaflow!  These semi-universal 50-State Legal catalytic converters have a catalyst specifically designed for your vehicle – just cut out your old catalytic converter and weld in the new one.  Engineered to cut emissions and improve performance.

Fits the following 2001-2006 GMC Sierra 3500 submodels:

• 2004-2006: WT; 8 Cyl 6.0L;
• 2001-2006: SL; 8 Cyl 6.0L;

• 2001-2006: SLE; 8 Cyl 6.0L;

• 2001-2006: SLT; 8 Cyl 6.0L;

• 2004-2005: WT; 8 Cyl 8.1L;

• 2002-2005: Base; 8 Cyl 6.0L;

• 2002-2005: Base; 8 Cyl 8.1L;

• 2001-2005: SLE; 8 Cyl 8.1L;

• 2001-2005: SLT; 8 Cyl 8.1L;

• 2001-2002: SL; 8 Cyl 8.1L;

Fits 8 more submodels. (Show all) Show less info

DAVICO EXACT FIT 49-STATE CATALYTIC CONVERTER

Do not settle for a universal or generic catalytic converter when you can replace your old or failing catalytic converter with a direct fit unit from Davico Manufacturing. This company has been producing catalytic converters since 1987 and is known for producing direct fit aftermarket catalytic converters that are at par with OEM units in terms of quality, specifications, and performance. Their Exact Fit Catalytic Converter is sized specifically for each application and uses the right substrate to meet the aftermarket performance standards for catalytic converters.

Features:

• Direct fit - made using reliable computer-controlled fabrication system for flawless replication
• Manufactured using strict OEM and emission control specifications
• No cutting, sliding, clamping, or welding required for easier installation

Specifications:

• 40 in. overall length
• 3-bolt fixed flange and 3-bolt loose flange inlets
• 2-bolt fixed flange outlet
• 4 oxygen sensor ports
• Round body
• Y-pipe assembly

Notes:

• 49-state legal, not for sale or use in California; Cannot be shipped to California addresses

Fits the following 2007-2007 GMC Sierra 3500 submodels:

• 2007-2007: Classic SL; 8 Cyl 6.0L;
• 2007-2007: Classic SLE; 8 Cyl 6.0L;

• 2007-2007: Classic SLT; 8 Cyl 6.0L;

• 2007-2007: Classic WT; 8 Cyl 6.0L;

Fits 2 more submodels. (Show all) Show less info