FAST FILTERED CLEANS and COOLS as you drive. It's patented design channels the oil sling off the ring gear and directs it thru a 40 micron sand cast filter. This filter housing is built into the cover. Bolt the cover on and go.  The patented design also achieves double the actual surface area of any other differential cover. It's like oil filled heat sink. Its real surface area!
FOR 2001-2019 CHEVY/GMC, 2003-2022 RAM, WITH AAM 11.5" OR 11.8" 14 BOLT REAR AXLE