# aFe Power 48-44001 Twisted Steel Header - 1 5/8 in. 16 Gauge 409 Stainless Steel Tubing - 3/8 in. Thick Head Flange - Merged Collectors for 2002-2013 Chevrolet Avalanche and More ### Performance Overview aFe Power's new Twisted Steel header delivers an astounding 12hp and 19lbs. x ft. torque while outflowing the factory exhaust manifold. aFe engineers have designed a header that features a symmetrical tube design for optimum balance and efficiency of exhaust flow. To eliminate dead space that can cause turbulence and hindering flow that formed collectors are prone to produce, a true merged collector and optimized tube lengths are used for true pulse control technology improving flow and performance. 100% TIG-Welded construction ensures optimal strength and durability. The smooth curves and increased diameter of this header helps remove restriction and keeps exhaust gas flowing smoothly for improved performance and durability on and off the trails. All components are supplied for a hassle-free installation with no modifications necessary ### Key Features - Brand: aFe Power - Part number: 48-44001 - Product type: Twisted Steel Header - 1 5/8 in. 16 Gauge 409 Stainless Steel Tubing - 3/8 in. Thick Head Flange - Merged Collectors - Designed for the compatible vehicle applications listed on this page ### Vehicle Fitment - 2007 Chevrolet Avalanche, Note: Ls, Lt, Ltz; 5.3L - 2008 Chevrolet Avalanche, Note: Ls, Lt, Ltz; 5.3L - 2009 Chevrolet Avalanche, Note: Ls, Lt, Ltz; 5.3L - 2010 Chevrolet Avalanche, Note: Ls, Lt, Ltz; 5.3L - 2011 Chevrolet Avalanche, Note: Ls, Lt, Ltz; 5.3L - 2012 Chevrolet Avalanche, Note: Ls, Lt, Ltz; 5.3L - 2013 Chevrolet Avalanche, Note: Black Diamond Ls, Black Diamond Lt, Black Diamond Ltz; 5.3L - 2005 Chevrolet Express 2500, Note: Base, Ls; 4.8L ### 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 48-44001. **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 - Twisted Steel Header - 1 5/8 in. 16 Gauge 409 Stainless Steel Tubing - 3/8 in. Thick Head Flange - Merged Collectors for Chevrolet Avalanche - 48-44001 fitment - aFe Power Twisted Steel Header - 1 5/8 in. 16 Gauge 409 Stainless Steel Tubing - 3/8 in. Thick Head Flange - Merged Collectors - 2002 Chevrolet Avalanche Twisted Steel Header - 1 5/8 in. 16 Gauge 409 Stainless Steel Tubing - 3/8 in. Thick Head Flange - Merged Collectors ### Vehicle Fitment Table Year Make Model Position Fitment Precision Note 2007 Chevrolet Avalanche Ls, Lt, Ltz; 5.3L 2008 Chevrolet Avalanche Ls, Lt, Ltz; 5.3L 2009 Chevrolet Avalanche Ls, Lt, Ltz; 5.3L 2010 Chevrolet Avalanche Ls, Lt, Ltz; 5.3L 2011 Chevrolet Avalanche Ls, Lt, Ltz; 5.3L 2012 Chevrolet Avalanche Ls, Lt, Ltz; 5.3L 2013 Chevrolet Avalanche Black Diamond Ls, Black Diamond Lt, Black Diamond Ltz; 5.3L 2005 Chevrolet Express 2500 Base, Ls; 4.8L 2006 Chevrolet Express 2500 Base, Ls, Lt; 4.8L 2007 Chevrolet Express 2500 Base; 4.8L 2010 Chevrolet Express 2500 Base; 4.8L 2011 Chevrolet Express 2500 Base, Ls, Lt; 4.8L 2012 Chevrolet Express 2500 Base, Ls, Lt; 4.8L 2013 Chevrolet Express 2500 Base, Ls, Lt; 4.8L 2004 Chevrolet Silverado 1500 Hybrid; 5.3L 2005 Chevrolet Silverado 1500 Hybrid; 5.3L 2006 Chevrolet Silverado 1500 Hybrid; 5.3L 2007 Chevrolet Silverado 1500 Hybrid, Ls, Lt, Ltz, Ss, Wt; 4.8L, 5.3L, 6.0L; Classic Body, New Body 2008 Chevrolet Silverado 1500 Ls, Lt, Ltz, Wt; 4.8L, 5.3L, 6.0L 2009 Chevrolet Silverado 1500 Hybrid, Ls, Lt, Ltz, Wt; 4.8L, 5.3L, 6.0L, 6.2L 2010 Chevrolet Silverado 1500 Hybrid, Ls, Lt, Ltz, Wt, Xfe; 4.8L, 5.3L, 6.0L, 6.2L 2011 Chevrolet Silverado 1500 Hybrid, Ls, Lt, Ltz, Wt, Xfe; 4.8L, 5.3L, 6.0L, 6.2L 2012 Chevrolet Silverado 1500 Hybrid, Ls, Lt, Ltz, Wt, Xfe; 4.8L, 5.3L, 6.0L, 6.2L 2013 Chevrolet Silverado 1500 Hybrid, Ls, Lt, Ltz, Wt, Xfe; 4.8L, 5.3L, 6.0L, 6.2L 2007 Chevrolet Silverado 1500 Hd Lt; 6.0L; Classic Body 2003 Chevrolet Silverado 2500 Base, Ls, Lt; 6.0L 2004 Chevrolet Silverado 2500 Base, Ls, Lt, Wt; 6.0L 2003 Chevrolet Silverado 3500 Base, Ls, Lt; 6.0L 2004 Chevrolet Silverado 3500 Base, Ls, Lt, Wt; 6.0L 2005 Chevrolet Silverado 3500 Base, Ls, Lt, Wt; 6.0L ## Details - **Price:** 1816.65 CAD - **Vendor:** aFe Power - **Type:** Twisted Steel Header - 1 5/8 in. 16 Gauge 409 Stainless Steel Tubing - 3/8 in. Thick Head Flange - Merged Collectors - **Tags:** 2002 Chevrolet Suburban 1500, 2003 Chevrolet Silverado 2500, 2003 Chevrolet Silverado 3500, 2003 Chevrolet Suburban 1500, 2004 Chevrolet Silverado 1500, 2004 Chevrolet Silverado 2500, 2004 Chevrolet Silverado 3500, 2004 Chevrolet Suburban 1500, 2005 Chevrolet Express 2500, 2005 Chevrolet Silverado 1500, 2005 Chevrolet Silverado 3500, 2005 Chevrolet Suburban 1500, 2006 Chevrolet Express 2500, 2006 Chevrolet Silverado 1500, 2006 Chevrolet Silverado 3500, 2007 Chevrolet Avalanche, 2007 Chevrolet Express 2500, 2007 Chevrolet Silverado 1500, 2007 Chevrolet Silverado 1500 Hd, 2008 Chevrolet Avalanche, 2008 Chevrolet Silverado 1500, 2009 Chevrolet Avalanche, 2009 Chevrolet Silverado 1500, 2010 Chevrolet Avalanche, 2010 Chevrolet Express 2500, 2010 Chevrolet Silverado 1500, 2011 Chevrolet Avalanche, 2011 Chevrolet Express 2500, 2011 Chevrolet Silverado 1500, 2012 Chevrolet Avalanche, 2012 Chevrolet Express 2500, 2012 Chevrolet Silverado 1500, 2013 Chevrolet Avalanche, 2013 Chevrolet Express 2500, 2013 Chevrolet Silverado 1500, 48-44001, aFe Power, AFE-48-44001, Air Filter, Air Intake, Auto Parts, Automotive, Diesel Performance, Direct Replacement, Exhaust Performance, Performance Parts, Twisted Steel Header - 1 5/8 in. 16 Gauge 409 Stainless Steel Tubing - 3/8 in. Thick Head Flange - Merged Collectors, Vehicle Fitment ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 1816.65 CAD | In stock | ## Images - aFe Power 48-44001 Twisted Steel Header - 1 5/8 in. 16 Gauge 409 Stainless Steel Tubing - 3/8 in. Thick Head Flange - Merged Collectors --- > Source: [Standard Auto Part](www.standardautopart.com/products/afe-chevrolet-avalanche-twisted-steel-header-48-44001) > Updated: 2026-06-14