B&M Hi-Tek Black Aluminum Rear Differential Cover For 2015-2022 F-150 Super 8.8 2008-2010-6.4l-powerstroke While this is great for

While this is great for controlling axle wrap

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B&M Hi-Tek Black Aluminum Rear Differential Cover For 2015-2022 F-150 Super 8.8 2008-2010-6.4l-powerstroke While this is great forB&M Hi Tek Aluminum Rear Differential Cover Black For 2015 2022 F 150 Super 8. 8 Our engineers designed the line of Hi Tek differential covers to not only look good but address a number of weaknesses of the factory stamped steel covers. First, they started by constructing the covers of thick A356. 0 T6 aluminum, which dissipates heat much faster than the factory steel unit keeping the fluid temperature lower under high stress loads vs. a steel cover.