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 A356-T6 cast aluminum with reinforcing ribs for maximum strength. Mounting hardware is included for a hassle-free installation. A calibration plug set to the factory level prevents overfilling of the differential. A magnetic drain plug and a deep reach magnetic fill plug are provided for maximum protection. This cover has a raw finish with machined fins for a distinctive look. 4 Quart Gear Oil Capacity: This cover has about a 4 quart gear oil capacity at the factory fill level, factory cover holds about 3 quarts. Built-in External Fins: Built-in external fins transfer heat from the fluid to the outside air for maximum cooling. Magnetic Drain/Fill Plug: This system incorporates a magnetic drain and deep reach fill plug that captures loose particles for maximum rear-end protection. Oil Level calibration plug: A 1/8" NPT calibration plug is set to the factory fluid level which eliminates accidental overfilling. When it comes to engineering for power, performance, protection and value, aFe Power is the only choice.
Installation Instructions


This Part Fits:

Year	Make	Model	Submodel
1999-2000	Chevrolet	C2500	Base
1999-2000	Chevrolet	C2500	LS
1999-2000	Chevrolet	C3500	Base
1999-2000	Chevrolet	C3500	LS
1999-2000	Chevrolet	K2500	Base
1999-2000	Chevrolet	K2500	LS
1999-2000	Chevrolet	K3500	Base
1999-2000	Chevrolet	K3500	LS
2001-2005	Chevrolet	Silverado 2500 HD	Base
2001-2006	Chevrolet	Silverado 2500 HD	LS
2001-2013	Chevrolet	Silverado 2500 HD	LT
2007-2013	Chevrolet	Silverado 2500 HD	LTZ
2003-2013	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
2007	Chevrolet	Silverado 3500 Classic	LS
2007	Chevrolet	Silverado 3500 Classic	LT
2007	Chevrolet	Silverado 3500 Classic	WT
2007-2013	Chevrolet	Silverado 3500 HD	LT
2007-2013	Chevrolet	Silverado 3500 HD	LTZ
2007-2013	Chevrolet	Silverado 3500 HD	WT
1999-2000	GMC	C2500	Sierra SL
1999-2000	GMC	C2500	Sierra SLE
1999-2000	GMC	C2500	Sierra SLT
1999-2000	GMC	C3500	Sierra SL
1999-2000	GMC	C3500	Sierra SLE
1999-2000	GMC	C3500	Sierra SLT
1999-2000	GMC	K2500	Sierra SL
1999-2000	GMC	K2500	Sierra SLE
1999-2000	GMC	K2500	Sierra SLT
1999-2000	GMC	K3500	Sierra SL
1999-2000	GMC	K3500	Sierra SLE
1999-2000	GMC	K3500	Sierra SLT
2002-2005	GMC	Sierra 2500 HD	Base
2011-2013	GMC	Sierra 2500 HD	Denali
2001-2002,2006	GMC	Sierra 2500 HD	SL
2001-2013	GMC	Sierra 2500 HD	SLE
2001-2013	GMC	Sierra 2500 HD	SLT
2003-2013	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
2011-2013	GMC	Sierra 3500 HD	Denali
2007-2013	GMC	Sierra 3500 HD	SLE
2007-2013	GMC	Sierra 3500 HD	SLT
2007-2013	GMC	Sierra 3500 HD	WT