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Applications for a PML GM 10 Bolt Differential Cover
This PML differential cover fits the rear end differential on many
GM, GMC, and Chevrolet vehicles. Typical applications include the
following. Be aware that for each model and year there may be more than
one rear axle possible.
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½ Ton Trucks, 1979 to Current:
- C10 & K10
- C1500 & K1500
- Silverado 1500
- Sierra 1500
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¾ Ton Trucks, 1979 to 1998:
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½ Ton Vans, 1979 to Current:
- Vandura
- Express
- Savana
- G1500
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¾ Ton Vans, 1979 to Current:
- Vandura
- Express
- Savana
- G2500
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Full Size Blazer, 1977 to 1994
GMC Jimmy, 1977 to 1991
Escalade, Tahoe & Yukon, 1992 & newer (check for panhard bar)
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Avalanche 1500
Suburban 1500, 1982 to 2006
Hummer H3
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These rear end covers also fit on older vehicles with the GM 8 1/2" differential. For example:
- 1966 Impala GM 8 1/2" differential, 10 bolt
- 1960s Chevelle, GM 8 1/2" differential, 10 bolt
- 1966 Pontiac GTO with GM 8 1/2" differential, 10 bolt with slight bolt hole modifications (please email or call for details)
Note that these covers will not fit the front axle 10 bolt 8 1/2"
ring gear differential found on some 4WD Chevy and GMC SUVs and trucks. Temperature Sensor Port Option
If you would like PML to machine your pan for a temperature sensor, there is an additional charge of $40. Please include temperature sensor size in the order notes, or you may order over the phone to insure accuracy. 888-832-5248
Bolt Information
PML includes mounting bolts with all differential covers.
PML provides bolts that are longer than the stock bolts since the flange
on PML's cover is much thicker than stock. The bolts with the stock
cover will not work.
GM has used four different bolts on these differentials so to
complete your order, we need to know which bolts you have. These
differentials have used both metric and standard cover bolts. The bolt
length has not been consistent either. When ordering one of these
covers, you will need to pull one of your stock bolts out (a top bolt is
best) and measure the length and determine whether it is metric or
standard.
- Bolt length is measured from the underside of the head (where a
washer would sit) to the tip. If the bolts are metric, the length will
be 21mm or 16mm. If the bolt is standard, the length will be 5/8 inch or
7/8 inch.
- Metric bolts will have 20 threads per inch, standard ones
will have 18. Also, a bolt head with lines or letters on it is
typically standard. A bolt with numbers such as 5.8, 9.8, 10.9, or 12.9
is likely to be metric.
We know this is a hassle, but we do not want to send the wrong
bolts or charge everyone a lot of extra money to cover sending all
possible bolts with each cover.
Installations
Yukon, 2005
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PML differential cover installed on a 2005 GMC Yukon SLE. The finish
on this differential cover is black powder coat. Our thanks to Scott
for sending us the picture. Click on image to view larger.
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Silverado 1500
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PML differential cover installed on a Chevrolet Silverado 1500. The
finish on this differential cover is black powder coat. Click on image
to view larger.
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Cadillac Escalade EXT, 2011
Michael installed a polish finish PML differential cover on his
Escalade. He put 3 coats of clear
coat on it and jb welded a filter magnet to the inside which has 25lbs
of holding
strength. (Note that we at PML do not think the magnet is needed or
necessarily a good idea since a magnet attached incorrectly could cause a
lot of problems.) Michael removed some fin material since he had about
1/4" clearance and wanted to be safe if the rubber bushings flexed. Our
thanks to Michael for all his feedback and pictures.
For a larger picture, please click one of the above images. A separate window will open
showing a bigger picture. (The larger pictures take a minute to display.)
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Volume: 0.5 qt. over stock
Dimensions: 11.05 x 10.25 x 2.83 See this pdf file, a separate window or tab will open
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Features
PML Differential Cover Features:
- Increased oil capacity for cooler temperatures
- Sand-cast aluminum with raised fins
- 3/16-inch thick wall construction to add strength to differential housing
- 3/8-inch thick gasket flange will not bend when bolts are tightened
- Machined gasket surface for a secure seal using RTV or factory reusable gasket
- Oil changes without removing the cover
- All hardware provided, including magnetic drain plug
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