# MagnaFlow 51759 Universal OEM Grade Catalytic Converter (3" ID/3" OD) for 1996-2007 Chevrolet Avalanche 2500 and More ### Performance Overview The Magnaflow OEM Grade Catalytic Converters are the perfect replacement for your stock converter. They are crafted from high-quality stainless or aluminized steel for maximum durability. They are seam-welded for unbreakable bonds with no risk of vibrations. The catalytic converters are available with a lap inserted in the point where the neck meets the catalytic converter body. The neck is carefully formed to be sure that it doesn't reach the body where it can cause trouble to the exhaust flow. As an additional safety feature, the Catalytic Converter has a heavy duty heat shield to protect it against extreme heat and give additional stability. ### Key Features - Brand: MagnaFlow - Part number: 51759 - Product type: Universal OEM Grade Catalytic Converter (3" ID/3" OD) - Designed for compatible vehicle applications listed on this page ### Vehicle Fitment - 2003 Chevrolet Avalanche 2500, Note: Base; 8.1L; 3.00"; 3.00" - 2004 Chevrolet Avalanche 2500, Note: Base; 8.1L; 3.00"; 3.00" - 2005 Chevrolet Avalanche 2500, Note: Ls, Lt; 8.1L; 3.00"; 3.00" - 1996 Chevrolet C2500, Note: Base, Cheyenne, Silverado; 7.4L; 3.00"; 3.00" - 1997 Chevrolet C2500, Note: Base, Cheyenne, Silverado; 7.4L; 3.00"; 3.00" - 1996 Chevrolet C2500 Suburban, Note: Base, Ls, Lt; 7.4L; 3.00"; 3.00" - 1997 Chevrolet C2500 Suburban, Note: Base, Ls, Lt; 7.4L; 3.00"; 3.00" - 1996 Chevrolet C3500, Note: Base, Cheyenne, Silverado; 7.4L; 3.00"; 3.00" ### FAQ **Will this fit my vehicle?** Please verify your year, make, model, position, and any fitment notes using the compatibility list above before purchase. **What part number is this?** The listed part number is 51759. **Is this product designed for direct replacement?** Yes. This product is intended to match compatible vehicle applications listed in the fitment section. **Should I confirm fitment before ordering?** Yes. Always compare your original part, position, and vehicle details with the fitment chart before ordering. ### Common Searches - Universal OEM Grade Catalytic Converter (3" ID/3" OD) for Chevrolet Avalanche 2500 - 51759 fitment - MagnaFlow Universal OEM Grade Catalytic Converter (3" ID/3" OD) - 1996 Chevrolet Avalanche 2500 Universal OEM Grade Catalytic Converter (3" ID/3" OD) ### Vehicle Fitment Table Year Make Model Position Fitment Precision Note 2003 Chevrolet Avalanche 2500 Base; 8.1L; 3.00"; 3.00" 2004 Chevrolet Avalanche 2500 Base; 8.1L; 3.00"; 3.00" 2005 Chevrolet Avalanche 2500 Ls, Lt; 8.1L; 3.00"; 3.00" 1996 Chevrolet C2500 Base, Cheyenne, Silverado; 7.4L; 3.00"; 3.00" 1997 Chevrolet C2500 Base, Cheyenne, Silverado; 7.4L; 3.00"; 3.00" 1996 Chevrolet C2500 Suburban Base, Ls, Lt; 7.4L; 3.00"; 3.00" 1997 Chevrolet C2500 Suburban Base, Ls, Lt; 7.4L; 3.00"; 3.00" 1996 Chevrolet C3500 Base, Cheyenne, Silverado; 7.4L; 3.00"; 3.00" 1997 Chevrolet C3500 Base, Cheyenne, Silverado; 7.4L; 3.00"; 3.00" 1996 Chevrolet Express 3500 Base, Ls; 7.4L; 3.00"; 3.00" 1997 Chevrolet Express 3500 Base, Ls; 7.4L; 3.00"; 3.00" 1998 Chevrolet Express 3500 Base, Ls; 7.4L; 3.00"; 3.00" 1999 Chevrolet Express 3500 Base, Ls; 7.4L; 3.00"; 3.00" 2000 Chevrolet Express 3500 Base, Ls; 7.4L; 3.00"; 3.00" 1996 Chevrolet G30 Van Beauville, Chevy Van, Hi-Cube, Sportvan; 7.4L; 3.00"; 3.00" 1996 Chevrolet K2500 Base, Cheyenne, Silverado; 7.4L; 3.00"; 3.00" 1997 Chevrolet K2500 Base, Cheyenne, Silverado; 7.4L; 3.00"; 3.00" 1996 Chevrolet K2500 Suburban Base, Ls, Lt; 7.4L; 3.00"; 3.00" 1997 Chevrolet K2500 Suburban Base, Ls, Lt; 7.4L; 3.00"; 3.00" 1998 Chevrolet K2500 Suburban Base, Ls; 7.4L; 3.00"; 3.00" 1999 Chevrolet K2500 Suburban Base, Ls; 7.4L; 3.00"; 3.00" 1996 Chevrolet K3500 Base, Cheyenne, Silverado; 7.4L; 3.00"; 3.00" 1997 Chevrolet K3500 Base, Cheyenne, Silverado; 7.4L; 3.00"; 3.00" 2001 Chevrolet Silverado 2500 Hd Base, Ls, Lt; 6.6L, 8.1L; 3.00"; 3.00" 2002 Chevrolet Silverado 2500 Hd Base, Ls, Lt; 6.6L, 8.1L; 3.00"; 3.00" 2003 Chevrolet Silverado 2500 Hd Base, Ls, Lt; 6.6L, 8.1L; 3.00"; 3.00" 2004 Chevrolet Silverado 2500 Hd Base, Ls, Lt, Wt; 6.6L, 8.1L; 3.00"; 3.00" 2005 Chevrolet Silverado 2500 Hd Base, Ls, Lt, Wt; 6.6L, 8.1L; 3.00"; 3.00" 2006 Chevrolet Silverado 2500 Hd Ls, Lt, Wt; 8.1L; 3.00"; 3.00" 2007 Chevrolet Silverado 2500 Hd Ls, Lt, Wt; 8.1L; New Body; 3.00"; 3.00" 2001 Chevrolet Silverado 3500 Base, Ls, Lt; 6.6L, 8.1L; 3.00"; 3.00" 2002 Chevrolet Silverado 3500 Base, Ls, Lt; 6.6L, 8.1L; 3.00"; 3.00" 2003 Chevrolet Silverado 3500 Base, Ls, Lt; 6.6L, 8.1L; 3.00"; 3.00" 2004 Chevrolet Silverado 3500 Base, Ls, Lt, Wt; 6.6L, 8.1L; 3.00"; 3.00" 2005 Chevrolet Silverado 3500 Base, Ls, Lt; 6.6L, 8.1L; 3.00"; 3.00" 2004 Chevrolet Suburban 2500 Ls, Lt; 8.1L; 3.00"; 3.00" 2005 Chevrolet Suburban 2500 Ls, Lt; 8.1L; 3.00"; 3.00" 2006 Chevrolet Suburban 2500 Ls, Lt; 8.1L; 3.00"; 3.00" 1996 GMC C2500 Sierra Sl, Sierra Sle, Sierra Slt; 7.4L; 3.00"; 3.00" 1997 GMC C2500 Sierra Sl, Sierra Sle, Sierra Slt; 7.4L; 3.00"; 3.00" 1996 GMC C2500 Suburban Base, Sle, Slt; 7.4L; 3.00"; 3.00" 1997 GMC C2500 Suburban Base, Sle, Slt; 7.4L; 3.00"; 3.00" 1996 GMC C3500 Sierra Sl, Sierra Sle, Sierra Slt; 7.4L; 3.00"; 3.00" 1997 GMC C3500 Sierra Sl, Sierra Sle, Sierra Slt; 7.4L; 3.00"; 3.00" 1996 GMC G3500 Rally; 7.4L; 3.00"; 3.00" 1996 GMC K2500 Sierra Sl, Sierra Sle, Sierra Slt; 7.4L; 3.00"; 3.00" 1997 GMC K2500 Sierra Sl, Sierra Sle, Sierra Slt; 7.4L; 3.00"; 3.00" 1996 GMC K2500 Suburban Base, Sle, Slt; 7.4L; 3.00"; 3.00" 1997 GMC K2500 Suburban Base, Sle, Slt; 7.4L; 3.00"; 3.00" 1998 GMC K2500 Suburban Base, Sle, Slt; 7.4L; 3.00"; 3.00" 1999 GMC K2500 Suburban Base, Sle, Slt; 7.4L; 3.00"; 3.00" 1996 GMC K3500 Sierra Sl, Sierra Sle, Sierra Slt; 7.4L; 3.00"; 3.00" 1997 GMC K3500 Sierra Sl, Sierra Sle, Sierra Slt; 7.4L; 3.00"; 3.00" 1998 GMC K3500 Sierra Sl, Sierra Sle, Sierra Slt; 7.4L; 3.00"; 3.00" 1999 GMC K3500 Sierra Sl, Sierra Sle, Sierra Slt; 7.4L; 3.00"; 3.00" 1996 GMC Savana 3500 Base, Sle; 7.4L; 3.00"; 3.00" 1997 GMC Savana 3500 Base, Sle; 7.4L; 3.00"; 3.00" 1998 GMC Savana 3500 Base, Sle; 7.4L; 3.00"; 3.00" 1999 GMC Savana 3500 Base, Sle; 7.4L; 3.00"; 3.00" 2000 GMC Savana 3500 Base, Sle; 7.4L; 3.00"; 3.00" 2001 GMC Sierra 2500 Hd Sl, Sle, Slt; 6.6L, 8.1L; 3.00"; 3.00" 2002 GMC Sierra 2500 Hd Base, Sl, Sle, Slt; 6.6L, 8.1L; 3.00"; 3.00" 2003 GMC Sierra 2500 Hd Base, Sl, Sle, Slt, Wt; 6.6L, 8.1L; 3.00"; 3.00" 2004 GMC Sierra 2500 Hd Base, Sl, Sle, Slt, Wt; 6.6L, 8.1L; 3.00"; 3.00" 2005 GMC Sierra 2500 Hd Base, Sl, Sle, Slt, Wt; 6.6L, 8.1L; 3.00"; 3.00" 2006 GMC Sierra 2500 Hd Sl, Sle, Slt, Wt; 8.1L; 3.00"; 3.00" 2007 GMC Sierra 2500 Hd Sl, Sle, Slt, Wt; 8.1L; New Body; 3.00"; 3.00" 2001 GMC Sierra 3500 Sl, Sle, Slt; 6.6L, 8.1L; 3.00"; 3.00" 2002 GMC Sierra 3500 Base, Sl, Sle, Slt; 6.6L, 8.1L; 3.00"; 3.00" 2003 GMC Sierra 3500 Base, Sle, Slt; 6.6L, 8.1L; 3.00"; 3.00" ## Details - **Price:** 374.1 CAD - **Vendor:** MagnaFlow - **Type:** Universal OEM Grade Catalytic Converter (3" ID/3" OD) - **Tags:** 1996 Chevrolet C2500, 1996 Chevrolet C2500 Suburban, 1996 Chevrolet C3500, 1996 Chevrolet Express 3500, 1996 Chevrolet G30 Van, 1996 Chevrolet K2500, 1996 Chevrolet K2500 Suburban, 1996 Chevrolet K3500, 1997 Chevrolet C2500, 1997 Chevrolet C2500 Suburban, 1997 Chevrolet C3500, 1997 Chevrolet Express 3500, 1997 Chevrolet K2500, 1997 Chevrolet K2500 Suburban, 1997 Chevrolet K3500, 1998 Chevrolet Express 3500, 1998 Chevrolet K2500 Suburban, 1999 Chevrolet Express 3500, 1999 Chevrolet K2500 Suburban, 2000 Chevrolet Express 3500, 2001 Chevrolet Silverado 2500 Hd, 2001 Chevrolet Silverado 3500, 2002 Chevrolet Silverado 2500 Hd, 2002 Chevrolet Silverado 3500, 2003 Chevrolet Avalanche 2500, 2003 Chevrolet Silverado 2500 Hd, 2003 Chevrolet Silverado 3500, 2004 Chevrolet Avalanche 2500, 2004 Chevrolet Silverado 2500 Hd, 2004 Chevrolet Silverado 3500, 2005 Chevrolet Avalanche 2500, 2005 Chevrolet Silverado 2500 Hd, 2005 Chevrolet Silverado 3500, 2006 Chevrolet Silverado 2500 Hd, 2007 Chevrolet Silverado 2500 Hd, 51759, Auto Parts, Automotive, Catalytic Converter, Direct Replacement, Exhaust Performance, Exhaust System, MagnaFlow, Magnaflow-51759, Muffler, Performance Exhaust, Performance Parts, Universal OEM Grade Catalytic Converter (3" ID/3" OD), Vehicle Fitment ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 374.10 CAD | In stock | ## Images - MagnaFlow 51759 Universal OEM Grade Catalytic Converter (3" ID/3" OD) --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/magnaflow-chevrolet-avalanche-2500-catalytic-converter-51759) > Updated: 2026-07-16