slide 1 to 5 of 11
slide 1 of 11

2001-2019 GM, 2001-2018 RAM AAM 11.5"-14-Bolt Heavy-Duty Cast Aluminum Rear Differential Cover

$319.99 In Stock Temporarily Out of Stock
Finish
43838505156851 45478386663667 45478386696435
PART NUMBER: 138051000 GTIN: 840171218527

OEM P/N REFERENCE: GM 12471446

Features

  • Premium A356.0-T6 heat-treated cast aluminum alloy – a high-strength, thermally conductive material
  • Precision-cast using permanent steel molds for a smooth, consistent finish and high dimensional accuracy
  • Increases oil capacity by .75 quart for higher thermal capacity
  • Half-inch external fins improve heat dissipation, lower differential fluid temperature, and increase impact resistance
  • Precision-placed internal windage scrapers prevent excessive churning, reducing heat generation, fluid aeration, and power loss
  • External fins and internal scrapers work together to form an ultra-strong Cross-Bracing structure
  • Cast-in gussets for additional differential housing flange support and increased rigidity
  • 304 Stainless steel service plugs with built-in high temperature rated neodymium magnets and Viton O-rings

FREE SHIPPING FOR ORDERS OVER $100

1 YEAR LIMITED WARRANTY

30-DAY RETURNS

  • Description
  • Compatible Vehicles
  • Downloads

Heavy-Duty Aluminum Rear Differential Cover for 2001-2019 GM/RAM 2500 11.5"-14

Excessive heat can degrade the protective qualities of differential fluid, leading to accelerated wear of gears and bearings. In limited-slip differentials, constant high temperatures can break down clutch packs and friction modifiers, resulting in reduced efficiency and compromised traction control.

Cast from high-grade A356.0-T6 aluminum alloy, the PPE differential cover adds .75 quart of fluid capacity and features half-inch external cooling fins for long-lasting heat management and performance.

Built-in windage scrapers inside the PPE cover ensure precise fluid distribution around the gears. By reducing excessive fluid churning, these scrapers lower heat buildup and minimize parasitic loss, promoting more efficient power transfer. Together with the vertical external fins, they form a strong cross-bracing structure that improves load distribution and enhances impact resistance.

The fill plug is precisely positioned at the factory level. Both the fill and drain plugs feature a powerful, high-temperature-rated neodymium magnet that captures ferrous particles for added protection.

Note1: Only works with vehicles equipped with AAM 11.5”-14 axles.
Note2: Not compatible with RAM 2500/3500 with coil-spring rear suspension. See SKU 238051000 for those applications.

OEM Part Number for Reference: Mopar 5086904AD, GM 23445891

2001-2019 GM/RAM 2500 11.5 inch -14 HEAVY-DUTY ALUMINUM REAR DIFFERENTIAL COVER, OEM Part Number for Reference: Mopar 5086904AD, GM 22891940

2019 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2019 GMC Sierra 3500HD 6.0L V8 Gas
2019 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2019 GMC Sierra 2500HD 6.0L V8 Gas
2019 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2019 Chevrolet Silverado 3500HD 6.0L V8 Gas
2019 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2019 Chevrolet Silverado 2500HD 6.0L V8 Gas
2018 Ram Pickup 3500 8 Cyl 5.7 Liter
2018 Ram Pickup 3500 6 Cyl 6.7 Liter Turbo
2018 Ram Pickup 2500 8 Cyl 5.7 Liter
2018 Ram Pickup 2500 6 Cyl 6.7 Liter Turbo
2018 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2018 GMC Sierra 3500HD 6.0L V8 Gas
2018 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2018 GMC Sierra 2500HD 6.0L V8 Gas
2018 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2018 Chevrolet Silverado 3500HD 6.0L V8 Gas
2018 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2018 Chevrolet Silverado 2500HD 6.0L V8 Gas
2017 Ram Pickup 3500 8 Cyl 5.7 Liter
2017 Ram Pickup 3500 6 Cyl 6.7 Liter Turbo
2017 Ram Pickup 2500 8 Cyl 5.7 Liter
2017 Ram Pickup 2500 6 Cyl 6.7 Liter Turbo
2017 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2017 GMC Sierra 3500HD 6.0L V8 Gas
2017 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2017 GMC Sierra 2500HD 6.0L V8 Gas
2017 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2017 Chevrolet Silverado 3500HD 6.0L V8 Gas
2017 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2017 Chevrolet Silverado 2500HD 6.0L V8 Gas
2016 Ram Pickup 3500 8 Cyl 5.7 Liter
2016 Ram Pickup 3500 6 Cyl 6.7 Liter Turbo
2016 Ram Pickup 2500 8 Cyl 5.7 Liter
2016 Ram Pickup 2500 6 Cyl 6.7 Liter Turbo
2016 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2016 GMC Sierra 3500HD 6.0L V8 Gas
2016 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2016 GMC Sierra 2500HD 6.0L V8 Gas
2016 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2016 Chevrolet Silverado 3500HD 6.0L V8 Gas
2016 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2016 Chevrolet Silverado 2500HD 6.0L V8 Gas
2015 Ram Pickup 3500 8 Cyl 5.7 Liter
2015 Ram Pickup 3500 6 Cyl 6.7 Liter Turbo
2015 Ram Pickup 2500 8 Cyl 5.7 Liter
2015 Ram Pickup 2500 6 Cyl 6.7 Liter Turbo
2015 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2015 GMC Sierra 3500HD 6.0L V8 Gas
2015 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2015 GMC Sierra 2500HD 6.0L V8 Gas
2015 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2015 Chevrolet Silverado 3500HD 6.0L V8 Gas
2015 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2015 Chevrolet Silverado 2500HD 6.0L V8 Gas
2014 Ram Pickup 3500 8 Cyl 5.7 Liter
2014 Ram Pickup 3500 6 Cyl 6.7 Liter Turbo
2014 Ram Pickup 2500 8 Cyl 5.7 Liter
2014 Ram Pickup 2500 6 Cyl 6.7 Liter Turbo
2014 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2014 GMC Sierra 3500HD 6.0L V8 Gas
2014 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2014 GMC Sierra 2500HD 6.0L V8 Gas
2014 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2014 Chevrolet Silverado 3500HD 6.0L V8 Gas
2014 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2014 Chevrolet Silverado 2500HD 6.0L V8 Gas
2013 Ram Pickup 3500 8 Cyl 5.7 Liter
2013 Ram Pickup 3500 6 Cyl 6.7 Liter Turbo
2013 Ram Pickup 2500 8 Cyl 5.7 Liter
2013 Ram Pickup 2500 6 Cyl 6.7 Liter Turbo
2013 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2013 GMC Sierra 3500HD 6.0L V8 Gas
2013 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2013 GMC Sierra 2500HD 6.0L V8 Gas
2013 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2013 Chevrolet Silverado 3500HD 6.0L V8 Gas
2013 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2013 Chevrolet Silverado 2500HD 6.0L V8 Gas
2012 Ram Pickup 3500 8 Cyl 5.7 Liter
2012 Ram Pickup 3500 6 Cyl 6.7 Liter Turbo
2012 Ram Pickup 2500 8 Cyl 5.7 Liter
2012 Ram Pickup 2500 6 Cyl 6.7 Liter Turbo
2012 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2012 GMC Sierra 3500HD 6.0L V8 Gas
2012 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2012 GMC Sierra 2500HD 6.0L V8 Gas
2012 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2012 Chevrolet Silverado 3500HD 6.0L V8 Gas
2012 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2012 Chevrolet Silverado 2500HD 6.0L V8 Gas
2011 Ram Pickup 3500 6 Cyl 6.7 Liter Turbo
2011 Ram Pickup 2500 6 Cyl 6.7 Liter Turbo
2011 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2011 GMC Sierra 3500HD 6.0L V8 Gas
2011 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2011 GMC Sierra 2500HD 6.0L V8 Gas
2011 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2011 Chevrolet Silverado 3500HD 6.0L V8 Gas
2011 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2011 Chevrolet Silverado 2500HD 6.0L V8 Gas
2010 Ram Pickup 3500 6 Cyl 6.7 Liter Turbo
2010 Ram Pickup 2500 8 Cyl 5.7 Liter
2010 Ram Pickup 2500 6 Cyl 6.7 Liter Turbo
2010 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2010 GMC Sierra 3500HD 6.0L V8 Gas
2010 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2010 GMC Sierra 2500HD 6.0L V8 Gas
2010 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2010 Chevrolet Silverado 3500HD 6.0L V8 Gas
2010 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2010 Chevrolet Silverado 2500HD 6.0L V8 Gas
2009 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2009 GMC Sierra 3500HD 6.0L V8 Gas
2009 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2009 GMC Sierra 2500HD 6.0L V8 Gas
2009 Dodge Ram Pickup 2500 8 Cyl 5.7 Liter
2009 Dodge Ram Pickup 2500 6 Cyl 6.7 Liter Turbo
2009 Dodge Ram Pickup 2500 6 Cyl 5.9 Liter Turbo
2009 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2009 Chevrolet Silverado 3500HD 6.0L V8 Gas
2009 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2009 Chevrolet Silverado 2500HD 6.0L V8 Gas
2008 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2008 GMC Sierra 3500HD 6.0L V8 Gas
2008 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2008 GMC Sierra 2500HD 6.0L V8 Gas
2008 Dodge Ram Pickup 2500 8 Cyl 5.7 Liter
2008 Dodge Ram Pickup 2500 6 Cyl 6.7 Liter Turbo
2008 Dodge Ram Pickup 2500 6 Cyl 5.9 Liter Turbo
2008 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2008 Chevrolet Silverado 3500HD 6.0L V8 Gas
2008 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2008 Chevrolet Silverado 2500HD 6.0L V8 Gas
2007 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2007 GMC Sierra 3500 Classic 8.1L V8 Gas
2007 GMC Sierra 3500 Classic 6.6L V8 Turbo Diesel (Duramax)
2007 GMC Sierra 3500 Classic 6.0L V8 Gas
2007 GMC Sierra 2500HD Classic 8.1L V8 Gas
2007 GMC Sierra 2500HD Classic 6.6L V8 Turbo Diesel (Duramax)
2007 GMC Sierra 2500HD Classic 6.0L V8 Gas
2007 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2007 GMC Sierra 2500HD 6.0L V8 Gas
2007 Dodge Ram Pickup 2500 8 Cyl 5.7 Liter
2007 Dodge Ram Pickup 2500 6 Cyl 6.7 Liter Turbo
2007 Dodge Ram Pickup 2500 6 Cyl 5.9 Liter Turbo
2007 Chevrolet Silverado 3500HD Classic 6.6L V8 Turbo Diesel (Duramax)
2007 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2007 Chevrolet Silverado 3500HD 6.0L V8 Gas
2007 Chevrolet Silverado 3500 Classic 8.1L V8 Gas
2007 Chevrolet Silverado 3500 Classic 6.0L V8 Gas
2007 Chevrolet Silverado 2500HD Classic 8.1L V8 Gas
2007 Chevrolet Silverado 2500HD Classic 6.6L V8 Turbo Diesel (Duramax)
2007 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2006 GMC Sierra 3500HD 8.1L V8 Gas
2006 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2006 GMC Sierra 3500HD 6.0L V8 Gas
2006 GMC Sierra 2500HD 8.1L V8 Gas
2006 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2006 GMC Sierra 2500HD 6.0L V8 Gas
2006 Dodge Ram Pickup 2500 8 Cyl 5.7 Liter
2006 Dodge Ram Pickup 2500 6 Cyl 5.9 Liter Turbo
2006 Dodge Ram Pickup 1500 10 Cyl 8.3 Liter
2006 Chevrolet Silverado 3500HD 8.1L V8 Gas
2006 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2006 Chevrolet Silverado 3500HD 6.0L V8 Gas
2006 Chevrolet Silverado 2500HD 8.1L V8 Gas
2006 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2006 Chevrolet Silverado 2500HD 6.0L V8 Gas
2005 GMC Sierra 3500HD 8.1L V8 Gas
2005 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2005 GMC Sierra 3500HD 6.0L V8 Gas
2005 GMC Sierra 2500HD 8.1L V8 Gas
2005 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2005 GMC Sierra 2500HD 6.0L V8 Gas
2005 Dodge Ram Pickup 2500 8 Cyl 5.7 Liter
2005 Dodge Ram Pickup 2500 6 Cyl 5.9 Liter Turbo
2005 Chevrolet Silverado 3500HD 8.1L V8 Gas
2005 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2005 Chevrolet Silverado 3500HD 6.0L V8 Gas
2005 Chevrolet Silverado 2500HD 8.1L V8 Gas
2005 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2005 Chevrolet Silverado 2500HD 6.0L V8 Gas
2004 GMC Sierra 3500HD LLY 6.6L V8 Turbo Diesel (Duramax)
2004 GMC Sierra 3500HD 8.1L V8 Gas
2004 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2004 GMC Sierra 3500HD 6.0L V8 Gas
2004 GMC Sierra 2500HD 8.1L V8 Gas
2004 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2004 GMC Sierra 2500HD 6.0L V8 Gas
2004 Dodge Ram Pickup 2500 8 Cyl 5.7 Liter
2004 Dodge Ram Pickup 2500 6 Cyl 5.9 Liter Turbo
2004 Chevrolet Silverado 3500HD LLY 6.6L V8 Turbo Diesel (Duramax)
2004 Chevrolet Silverado 3500HD 8.1L V8 Gas
2004 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2004 Chevrolet Silverado 3500HD 6.0L V8 Gas
2004 Chevrolet Silverado 2500HD LLY 6.6L V8 Turbo Diesel (Duramax)
2004 Chevrolet Silverado 2500HD 8.1L V8 Gas
2004 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2004 Chevrolet Silverado 2500HD 6.0L V8 Gas
2003 GMC Sierra 3500HD 8.1L V8 Gas
2003 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2003 GMC Sierra 3500HD 6.0L V8 Gas
2003 GMC Sierra 2500HD 8.1L V8 Gas
2003 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2003 Dodge Ram Pickup 2500 8 Cyl 5.7 Liter
2003 Dodge Ram Pickup 2500 6 Cyl 5.9 Liter Turbo
2003 Dodge Ram Pickup 2500 10 Cyl 8.0 Liter
2003 Chevrolet Silverado 3500HD 8.1L V8 Gas
2003 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2003 Chevrolet Silverado 3500HD 6.0L V8 Gas
2003 Chevrolet Silverado 2500HD 8.1L V8 Gas
2003 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2003 Chevrolet Silverado 2500HD 6.0L V8 Gas
2002 GMC Sierra 3500HD 8.1L V8 Gas
2002 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2002 GMC Sierra 3500HD 6.0L V8 Gas
2002 GMC Sierra 2500HD 8.1L V8 Gas
2002 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2002 GMC Sierra 2500HD 6.0L V8 Gas
2002 Chevrolet Silverado 3500HD 8.1L V8 Gas
2002 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2002 Chevrolet Silverado 3500HD 6.0L V8 Gas
2002 Chevrolet Silverado 2500HD 8.1L V8 Gas
2002 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2002 Chevrolet Silverado 2500HD 6.0L V8 Gas
2001 GMC Sierra 3500HD 8.1L V8 Gas
2001 GMC Sierra 3500HD 6.6L V8 Turbo Diesel (Duramax)
2001 GMC Sierra 3500HD 6.0L V8 Gas
2001 GMC Sierra 2500HD 8.1L V8 Gas
2001 GMC Sierra 2500HD 6.6L V8 Turbo Diesel (Duramax)
2001 GMC Sierra 2500HD 6.0L V8 Gas
2001 Chevrolet Silverado 3500HD 8.1L V8 Gas
2001 Chevrolet Silverado 3500HD 6.6L V8 Turbo Diesel (Duramax)
2001 Chevrolet Silverado 3500HD 6.0L V8 Gas
2001 Chevrolet Silverado 2500HD 8.1L V8 Gas
2001 Chevrolet Silverado 2500HD 6.6L V8 Turbo Diesel (Duramax)
2001 Chevrolet Silverado 2500HD 6.0L V8 Gas
Files
PPE PDF Download file
Install Guide
PPE PDF Download file
Drawings
PPE PDF Download file
Fitment Note
PPE PDF Download file
Check vehicle fitment

(Change vehicle)

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

Recently Viewed

Wishlist

Add to your shopping list.