SKU: 4029156248 ATS Diesel 01 GM / 03 Dodge 14-Bolt 11.5in American Axle ATS Protector Rear Differential Cover Upgrade the stock differential cover on 2001 GM heavy-duty trucks and 2003 Dodge Ram models equipped with 11.5-inch 14-Bolt American Axle rear differentials using this ATS Diesel Protector cover. The cast aluminum design increases fluid capacity by 4 quarts and improves heat dissipation to maintain lower gear oil temperatures during towing, hauling, or off-road use. Powerful neodymium magnets capture metal wear particles to extend gear and bearing life under high-load conditions. Key Features Cast A356-T6 Aluminum with Fins: Heat-sink fins dissipate heat from gear oil 3 times faster than stock steel covers, reducing differential temperatures by 20-30F for reliable performance Increased Oil Capacity: Adds 4 extra quarts of gear oil to enhance cooling and lubrication during extended heavy towing, racing, or steep off-road climbs 6 Neodymium Magnets: Embedded high-strength magnets trap ferrous metal particles from gear wear, preventing circulation damage to bearings and components O-Ring Gasket Seal: Reusable one-piece O-ring gasket provides a leak-free seal without the need for silicone RTV or messy sealants Optimized Baffled Pickup: Internal baffles ensure consistent oil flow to the pickup tube at extreme angles, high G-forces, or during aggressive driving Product Notes Direct bolt-on replacement for 11.5-inch AAM 14-Bolt axles, MPN 4029156248 Includes stainless steel hardware and magnets, no additional parts required 24.8 lbs product weight, ships in 20 x 16 x 7 inch box Installation Notes Professional installation recommended. Drain gear oil completely before removing stock cover Uses existing bolt holes, torque fasteners to 30 ft-lbs in cross pattern This Part Fits Year Make Model Submodel 1999-2002 Dodge Ram 2500 Base 2005-2010 Dodge Ram 2500 Laramie 2004-2010 Dodge Ram 2500 SLT 2006-2010 Dodge Ram 2500 ST 2008-2010 Dodge Ram 2500 SXT 2011-2012 Ram 2500 Laramie 2001-2005 Chevrolet Silverado 2500 HD LT 2007-2014 Chevrolet Silverado 2500 HD LTZ 2001-2005 Chevrolet Silverado 3500 LS 2007-2014 Chevrolet Silverado 3500 HD WT 2001-2005 GMC Sierra 3500 SLE 2007-2014 GMC Sierra 3500 HD SLT 2006 Hummer H1 Alpha 2003-2005 Dodge Ram 3500 Base 2004-2010 Dodge Ram 3500 Laramie 2006-2010 Chevrolet Express 2500 Base 2001-2005 Chevrolet Silverado 2500 HD Base 2007-2014 GMC Sierra 2500 HD SLE 2003-2005 GMC Sierra 2500 HD WT 2006-2010 GMC Savana 2500 Base Why Choose ATS Diesel? 20 years engineering diesel truck upgrades for towing and racing Cast in USA with tighter tolerances than stock covers Backed by real-world testing on Cummins and Duramax platforms Frequently Asked Questions Q: Will this fit my 2007 Ram 2500 with 11.5-inch rear? A: Yes, it bolts directly to AAM 14-Bolt 11.5-inch axles in 2003 Ram 2500/3500 models Q: What material is the cover made from? A: A356-T6 cast aluminum for strength and heat transfer, with black powdercoat finish Q: What is the warranty? A: Limited lifetime warranty against defects in materials and workmanship Shipping & Handling Method: UPS Ground or FedEx Availability: In stock – ships same or next business day Packaging: Secure box 20 x 16 x 7 inches Weight: 24.8 lbs Reviews There are no reviews yet. Be the first to review “ATS Diesel 01 GM / 03 Dodge 14-Bolt 11.5in American Axle ATS Protector Rear Differential Cover” Cancel replyYour email address will not be published. Required fields are marked *Your rating * Rate… Perfect Good Average Not that bad Very poor Your review *Name * Email * Save my name, email, and website in this browser for the next time I comment.
