aFe Power's new rear differential cover brings performance engineering to the protection of your axle's differential. This differential cover is constructed out of durable cast aluminum with reinforced ribs and machined fins for maximum strength and styling. This cover comes with all necessary hardware for easy installation. Built-in internal and external fins transfer heat from the fluid to the outside air for maximum cooling. This system incorporates a magnetic drain plug to capture loose particles for maximum front-end protection. Also included is a 1/8" NPT calibration plug that is set to the factory fluid level which eliminates accidental overfilling.
Installation Instructions


This Part Fits:

Year	Make	Model	Submodel
2001-2004	Chevrolet	Silverado 2500	Base
2001-2004	Chevrolet	Silverado 2500	LS
2001-2004	Chevrolet	Silverado 2500	LT
2004	Chevrolet	Silverado 2500	WT
2001-2005	Chevrolet	Silverado 2500 HD	Base
2015-2019	Chevrolet	Silverado 2500 HD	High Country
2001-2006	Chevrolet	Silverado 2500 HD	LS
2001-2019	Chevrolet	Silverado 2500 HD	LT
2007-2019	Chevrolet	Silverado 2500 HD	LTZ
2003-2019	Chevrolet	Silverado 2500 HD	WT
2007	Chevrolet	Silverado 2500 HD Classic	LS
2007	Chevrolet	Silverado 2500 HD Classic	LT
2007	Chevrolet	Silverado 2500 HD Classic	WT
2001-2005	Chevrolet	Silverado 3500	Base
2001-2006	Chevrolet	Silverado 3500	LS
2001-2006	Chevrolet	Silverado 3500	LT
2004,2006	Chevrolet	Silverado 3500	WT
2015-2019	Chevrolet	Silverado 3500 HD	High Country
2007-2019	Chevrolet	Silverado 3500 HD	LT
2007-2019	Chevrolet	Silverado 3500 HD	LTZ
2007-2019	Chevrolet	Silverado 3500 HD	WT
2002-2005,2015-2019	GMC	Sierra 2500 HD	Base
2011-2019	GMC	Sierra 2500 HD	Denali
2001-2002,2006	GMC	Sierra 2500 HD	SL
2001-2019	GMC	Sierra 2500 HD	SLE
2001-2019	GMC	Sierra 2500 HD	SLT
2003-2014	GMC	Sierra 2500 HD	WT
2007	GMC	Sierra 2500 HD Classic	SL
2007	GMC	Sierra 2500 HD Classic	SLE
2007	GMC	Sierra 2500 HD Classic	SLT
2007	GMC	Sierra 2500 HD Classic	WT
2002-2005	GMC	Sierra 3500	Base
2001-2002,2006	GMC	Sierra 3500	SL
2001-2006	GMC	Sierra 3500	SLE
2001-2006	GMC	Sierra 3500	SLT
2004-2006	GMC	Sierra 3500	WT
2007	GMC	Sierra 3500 Classic	SL
2007	GMC	Sierra 3500 Classic	SLE
2007	GMC	Sierra 3500 Classic	SLT
2007	GMC	Sierra 3500 Classic	WT
2015-2019	GMC	Sierra 3500 HD	Base
2011-2019	GMC	Sierra 3500 HD	Denali
2007-2019	GMC	Sierra 3500 HD	SLE
2007-2019	GMC	Sierra 3500 HD	SLT
2007-2014	GMC	Sierra 3500 HD	WT