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"
Number of Bolts: 14 holes, 12 large holes for bolts, 2 small holes for brackets/clips for cables
Status: PML is looking into the design and development of a front differential cover for 2011 and newer Silverado and Sierra 2500HD and 3500HD trucks. Preliminary design is complete. Project on hold pending feedback from potential customers.
Ring gear is 9.25 or 9.5.
AC Delco part numbers:
- Part Number 84756922 for 2020 and newer trucks
- Part Number 20768577 for 2011 to 2019 trucks
The OEM factory covers look the same. We will be comparing the size, shape and bolt hole patterns to confirm.
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Stock Covers
There are two part numbers for the front stock cover. Part Number 20768577 and 84756922. Covers look the same.
Pictures of stock cover part number 84756922, outside, inside and box with part number.
Click on image to view larger.