# MagnaFlow 99309HM Heavy Metal Catalytic Converter (3" ID/3" OD) for 1996-2008 Chevrolet Avalanche 2500 and More ### Performance Overview Magnaflow specializes in performance catalytic converter. They've spent over thirty years creating, developing, and improving on their technology to earn their reputation as being the global market leader. magnaflow's Heavy Metal catalytic converters use a combination of ceramic and metallic substrates as well as wall thickness specifically developed for your specific vehicle needs. Installation may require some cutting and welding. ### Key Features - Brand: MagnaFlow - Part number: 99309HM - Product type: Heavy Metal 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; 5.7L, 7.4L; 3.00"; 3.00" - 1997 Chevrolet C2500, Note: Base, Cheyenne, Silverado; 5.7L, 7.4L; 3.00"; 3.00" - 1998 Chevrolet C2500, Note: Base, Cheyenne, Silverado, Wt; 5.7L, 7.4L; 3.00"; 3.00" - 1999 Chevrolet C2500, Note: Base, Ls; 5.7L, 7.4L; 3.00"; 3.00" - 2000 Chevrolet C2500, Note: Base, Ls; 5.7L, 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 99309HM. **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 - Heavy Metal Catalytic Converter (3" ID/3" OD) for Chevrolet Avalanche 2500 - 99309HM fitment - MagnaFlow Heavy Metal Catalytic Converter (3" ID/3" OD) - 1996 Chevrolet Avalanche 2500 Heavy Metal 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; 5.7L, 7.4L; 3.00"; 3.00" 1997 Chevrolet C2500 Base, Cheyenne, Silverado; 5.7L, 7.4L; 3.00"; 3.00" 1998 Chevrolet C2500 Base, Cheyenne, Silverado, Wt; 5.7L, 7.4L; 3.00"; 3.00" 1999 Chevrolet C2500 Base, Ls; 5.7L, 7.4L; 3.00"; 3.00" 2000 Chevrolet C2500 Base, Ls; 5.7L, 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; 5.7L, 7.4L; 3.00"; 3.00"; 135.5 In. Wheelbase, 155.5 In. Wheelbase, 159.5 In. Wheelbase 1997 Chevrolet C3500 Base, Cheyenne, Silverado; 5.7L, 7.4L; 3.00"; 3.00"; 135.5 In. Wheelbase, 155.5 In. Wheelbase, 159.5 In. Wheelbase 1998 Chevrolet C3500 Base, Cheyenne, Silverado; 5.7L, 7.4L; 3.00"; 3.00"; 155.5 In. Wheelbase 1999 Chevrolet C3500 Base, Ls; 5.7L, 7.4L; 3.00"; 3.00"; 155.5 In. Wheelbase 2000 Chevrolet C3500 Base, Ls; 5.7L, 7.4L; 3.00"; 3.00"; 155.5 In. Wheelbase 2000 Chevrolet C3500Hd Base; 5.7L; 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 Chevy Van; 7.4L; 3.00"; 3.00" 1996 Chevrolet K2500 Base, Cheyenne, Silverado; 5.7L, 7.4L; 3.00"; 3.00" 1997 Chevrolet K2500 Base, Cheyenne, Silverado; 5.7L, 7.4L; 3.00"; 3.00" 1998 Chevrolet K2500 Base, Cheyenne, Silverado, Wt; 5.7L, 7.4L; 3.00"; 3.00" 1999 Chevrolet K2500 Base, Ls; 5.7L, 7.4L; 3.00"; 3.00" 2000 Chevrolet K2500 Base, Ls; 5.7L, 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; 5.7L, 7.4L; 3.00"; 3.00"; 155.5 In. Wheelbase, 159.5 In. Wheelbase 1997 Chevrolet K3500 Base, Cheyenne, Silverado; 5.7L, 7.4L; 3.00"; 3.00"; 155.5 In. Wheelbase, 159.5 In. Wheelbase 1998 Chevrolet K3500 Base, Cheyenne, Silverado; 5.7L, 7.4L; 3.00"; 3.00"; 155.5 In. Wheelbase 1999 Chevrolet K3500 Base, Ls; 5.7L, 7.4L; 3.00"; 3.00"; 155.5 In. Wheelbase 2000 Chevrolet K3500 Base, Ls; 5.7L, 7.4L; 3.00"; 3.00"; 155.5 In. Wheelbase 2001 Chevrolet Silverado 2500 Hd Base, Ls; 6.0L, 8.1L; 3.00"; 3.00"; 133.0 In. Wheelbase 2002 Chevrolet Silverado 2500 Hd Base, Ls; 6.0L, 8.1L; 3.00"; 3.00"; 133.0 In. Wheelbase 2003 Chevrolet Silverado 2500 Hd Base, Ls, Lt, Wt; 6.0L, 8.1L; 3.00"; 3.00"; 133.0 In. Wheelbase 2004 Chevrolet Silverado 2500 Hd Base, Ls, Lt, Wt; 6.0L, 8.1L; 3.00"; 3.00"; 133.0 In. Wheelbase 2005 Chevrolet Silverado 2500 Hd Base, Ls, Lt, Wt; 6.0L, 8.1L; 3.00"; 3.00"; 133.0 In. Wheelbase 2006 Chevrolet Silverado 2500 Hd Ls, Lt, Wt; 6.0L, 8.1L; 3.00"; 3.00"; 133.0 In. Wheelbase 2007 Chevrolet Silverado 2500 Hd Ls, Lt, Wt; 8.1L; New Body; 3.00"; 3.00" 2007 Chevrolet Silverado 3500 Ls, Lt, Wt; 6.0L; New Body; 3.00"; 3.00" 2000 Chevrolet Suburban 2500 Base, Ls, Lt; 6.0L; 3.00"; 3.00" 2001 Chevrolet Suburban 2500 Base, Ls, Lt; 6.0L; 3.00"; 3.00" 2002 Chevrolet Suburban 2500 Ls, Lt; 6.0L; 3.00"; 3.00" 2003 Chevrolet Suburban 2500 Ls, Lt; 6.0L; 3.00"; 3.00" 2004 Chevrolet Suburban 2500 Ls, Lt; 6.0L, 8.1L; 3.00"; 3.00" 2005 Chevrolet Suburban 2500 Ls, Lt; 6.0L, 8.1L; 3.00"; 3.00" 2006 Chevrolet Suburban 2500 Ls, Lt; 6.0L, 8.1L; 3.00"; 3.00" 2007 Chevrolet Suburban 2500 Ls, Lt, Ltz; 6.0L; 3.00"; 3.00" 2008 Chevrolet Suburban 2500 Ls, Lt; 6.0L; 3.00"; 3.00" 1996 GMC C2500 Sierra Sl, Sierra Sle, Sierra Slt; 5.7L, 7.4L; 3.00"; 3.00" 1997 GMC C2500 Sierra Sl, Sierra Sle, Sierra Slt; 5.7L, 7.4L; 3.00"; 3.00" 1998 GMC C2500 Sierra Sl, Sierra Sle, Sierra Slt; 5.7L, 7.4L; 3.00"; 3.00" 1999 GMC C2500 Sierra Sl, Sierra Sle, Sierra Slt; 5.7L, 7.4L; 3.00"; 3.00" 2000 GMC C2500 Sierra Sl, Sierra Sle, Sierra Slt; 5.7L, 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; 5.7L, 7.4L; 3.00"; 3.00"; 155.5 In. Wheelbase, 159.5 In. Wheelbase 1997 GMC C3500 Sierra Sl, Sierra Sle, Sierra Slt; 5.7L, 7.4L; 3.00"; 3.00"; 155.5 In. Wheelbase, 159.5 In. Wheelbase 1998 GMC C3500 Sierra Sl, Sierra Sle, Sierra Slt; 5.7L, 7.4L; 3.00"; 3.00"; 155.5 In. Wheelbase 1999 GMC C3500 Sierra Sl, Sierra Sle, Sierra Slt; 5.7L, 7.4L; 3.00"; 3.00"; 155.5 In. Wheelbase 2000 GMC C3500 Sierra Sl, Sierra Sle, Sierra Slt; 5.7L, 7.4L; 3.00"; 3.00"; 155.5 In. Wheelbase 1999 GMC C3500Hd Base; 5.7L; 3.00"; 3.00" 2000 GMC C3500Hd Base; 5.7L; 3.00"; 3.00" 1996 GMC G3500 Rally; 7.4L; 3.00"; 3.00" 1996 GMC K2500 Sierra Sl, Sierra Sle, Sierra Slt; 5.7L, 7.4L; 3.00"; 3.00" 1997 GMC K2500 Sierra Sl, Sierra Sle, Sierra Slt; 5.7L, 7.4L; 3.00"; 3.00" ## Details - **Price:** 295.8 CAD - **Vendor:** MagnaFlow - **Type:** Heavy Metal 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 C2500, 1998 Chevrolet C3500, 1998 Chevrolet Express 3500, 1998 Chevrolet K2500, 1998 Chevrolet K2500 Suburban, 1998 Chevrolet K3500, 1999 Chevrolet C2500, 1999 Chevrolet C3500, 1999 Chevrolet Express 3500, 1999 Chevrolet K2500, 1999 Chevrolet K2500 Suburban, 1999 Chevrolet K3500, 2000 Chevrolet C2500, 2000 Chevrolet C3500, 2000 Chevrolet C3500Hd, 2000 Chevrolet Express 3500, 2000 Chevrolet K2500, 2003 Chevrolet Avalanche 2500, 2004 Chevrolet Avalanche 2500, 2005 Chevrolet Avalanche 2500, 99309HM, Auto Parts, Automotive, Catalytic Converter, Direct Replacement, Exhaust Performance, Exhaust System, Heavy Metal Catalytic Converter (3" ID/3" OD), MagnaFlow, Magnaflow-99309HM, Muffler, Performance Exhaust, Performance Parts, Vehicle Fitment ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 295.80 CAD | In stock | ## Images - MagnaFlow 99309HM Heavy Metal Catalytic Converter (3" ID/3" OD) --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/magnaflow-chevrolet-avalanche-2500-catalytic-converter-99309hm) > Updated: 2026-07-16