The aFe Power Street Series rear differential cover for 2015–2017 GM Colorado/Canyon (Dana M220-12 12-bolt) is a machined-raw A356-T6 aluminum replacement that adds sump capacity and cooling. It includes reinforcing ribs, machined fins, mounting hardware, a sight glass and a magnetic fill/drain plug. Calibrated to factory fluid level, the cover increases lube capacity to about two quarts.
aFe Power Rear Differential Cover (Machined Raw) 15-17 GM Colorado/Canyon 12 Bolt Axles