Upgrade the rear of your 2001-2019 Chevy Silverado or GMC Sierra 2500/3500 6.6L Duramax or 2003-2018 Dodge/Ram 2500/3500 Cummins with the HSP Diesel AAM 11.5" Rear Differential Cover. This heavy-duty cover replaces select factory GM and Mopar differential covers on trucks equipped with an AAM 11.5" rear differential, providing increased strength and durability while adding a clean, custom appearance to the rear of your Duramax or Cummins.
Featuring laser-cut, bent, and welded construction, the HSP Diesel differential cover offers a strong replacement for the factory-style cover. Available powder coat finishes let you match or contrast your Chevy, GMC, Dodge or Ram's existing components, while the included 1/2" drain plug allows convenient differential fluid draining. Backed by HSP's No BS Limited Lifetime Warranty.
Features:
- Fits AAM 11.5" rear differentials on 2001-2019 Duramax and 2003-2018 Cummins
- Direct replacement for select factory GM and Mopar covers
- Laser-cut, bent, and welded construction
- Increased strength compared to the factory-style cover
- Powder coat options to complement your build
- Clean, custom appearance
- Includes a 1/2" drain plug
- Backed by HSP's No BS Limited Lifetime Warranty
Specifications:
- Brand: HSP Diesel
- Part Number: 065-1-HSP
- Base Part Number: HSP-065-1-HSP
- Product: AAM 11.5" Rear Differential Cover
- Axle: AAM 11.5" rear differential
- Construction: Laser-cut, bent, and welded
- Finish: Powder coat
- Color Options: 8 standard powder coat colors or custom color
- Drain Plug: 1/2" (included)
- Replaces GM: 12471445, 20984339, 23445891
- Replaces Mopar: 5086904AD, 5086904AB, 5086904AC
- Lead Time: 2-3 weeks for production and powder coating
- Warranty: Limited Lifetime
Available Colors:
- Please message us with your powder coat color and exact year/make/model of your vehicle after purchase. Please note that your order will not be processed until we have this information.
- Ink Black
- Illusion Blueberry
- Illusion Purple
- Illusion Cherry
- Flag Red
- Kingsport Grey
- M&M Orange
- Silk Satin Black
- Custom Color (+$75 charge)
Included:
- (1) Rear Differential Cover (HSP-IN-060)
- (1) 1/2" Drain Plug (RFB-511-RFAB)
Fitment:
- 2001-2004.5 Chevy Silverado 2500/3500 / GMC Sierra 2500/3500 6.6L Duramax LB7
- 2004.5-2006 Chevy Silverado 2500/3500 / GMC Sierra 2500/3500 6.6L Duramax LLY
- 2006-2007 Chevy Silverado 2500/3500 / GMC Sierra 2500/3500 6.6L Duramax LBZ
- 2007.5-2010 Chevy Silverado 2500/3500 / GMC Sierra 2500/3500 6.6L Duramax LMM
- 2011-2016 Chevy Silverado 2500/3500 / GMC Sierra 2500/3500 6.6L Duramax LML
- 2017-2019 Chevy Silverado 2500/3500 / GMC Sierra 2500/3500 6.6L Duramax L5P
- 2003-2007 Dodge Ram 2500/3500 5.9L Cummins
- 2007.5-2009 Dodge Ram 2500/3500 6.7L Cummins
- 2010-2018 Ram 2500/3500 6.7L Cummins
Notes:
- HSP No BS Limited Lifetime Warranty
- Warranty does not cover modifications, alterations, or misuse
- Please allow 2-3 weeks before shipping for production and powder coating
- Fits AAM 11.5" rear differentials only
- Base Part Number: HSP-065-1-HSP
- Replaces GM part numbers: 12471445, 20984339, 23445891
- Replaces Mopar part numbers: 5086904AD, 5086904AB, 5086904AC