#PML9369 GM 10.5 RG, 14 Bolt, 3/8 inch bolts

Volume: 1.0 qt. over stock

PML makes two different rear end covers for the GM 10½ differential: this one and a part number 6060, a straight fin cover.

Part Numbers 6060-1 and 6060-2
Volume: 1.0 quart over stock, approximately Dimensions: Click here for dimensions. This differential cover fits heavy duty trucks and vans such as Chevy and GMC 2500 and 3500. PML makes two different rear end covers for the GM 10½ differential: this one and part number 9369, a patterned fin cover. Applications Typical applications include the following. Be aware that for each model and year there may be more than one rear axle possible so please check before ordering. See also GM 14 bolt 9½ and AAM 14 bolt 11½.
¾ Ton Truck, 1973 to Current C20 & K20 C2500 & K2500 Silverado 2500 & 2500HD Sierra 2500 & 2500HD	1 Ton Truck, 1973 to Current C30 & K30 C3500 & K3500 Silverado 3500 & Sierra 3500	¾Ton Van, 1973 to Current: Vandura Express Savana G20 G2500
Vehicle configurations vary. Please check dimensions, clearance and fitment carefully before ordering. There is a restocking fee for returns. Vehicles with towing packages may have limited space for a larger differential cover. Also, the spare tire may be close to the cover. Some folks have increased the space by tying the spare tire back. Please check and order the correct mounting bolt thread diameter. These differentials were made with 3/8-inch (.375 inch) and 8mm (.315 inch) bolts. PML offers the cover in both versions: P/N 6060-1 is for 3/8-inch bolts and P/N 6060-2 is for 8mm bolts.
Matching Front Cover for 4WD For 4WD trucks and SUVs with the GM 8.5, 10 Bolt front end, PML offers a matching differential cover. See the GM 8 1/2, Front 10 Bolt, Part Number 6077 The matching front cover is available in all finishes. Shown in black powder coated.
PML Differential Cover Compared to Stock    Click on image to view larger. These images show this PML differential cover compared to the stock cover. This image compares the depth of both PML GM 10 1/2 inch 14 bolt rear differential covers and the stock cover. Click on image to view larger in a new tab or window. Installations 2016 Silverado 2500HD This differential cover was installed by BOOSTPOWER.com on a 2016 Silveardo 2500HD.           Suburban 4WD We were at the Off-Road Expo in Pomona, CA, and spotted this Suburban outfitted with our front and rear differential covers. The front cover is a GM 8 1/2 10 Bolt, PML part number 6077.        Click on image to view larger in a new tab or window. 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.) 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

This differential cover fits heavy duty trucks and vans such as Chevy and GMC 2500 and 3500.

Applications

Typical applications include the following. Be aware that for each model and year there may be more than one rear axle possible so please check before ordering. See also GM 14 bolt 9½ and AAM 14 bolt 11½.

¾ Ton Truck, 1973 to Current

• C20 & K20
• C2500 & K2500
• Silverado 2500 & 2500HD
• Sierra 2500 & 2500HD

1 Ton Truck, 1973 to Current

• C30 & K30
• C3500 & K3500
• Silverado 3500 & Sierra 3500

¾Ton Van, 1973 to Current:

• Vandura
• Express
• Savana
• G20
• G2500

Vehicle configurations vary. Please check dimensions, clearance and fitment carefully before ordering. There is a restocking fee for returns.

Vehicles with towing packages may have limited space for a larger differential cover. Also, the spare tire may be close to the cover. Some folks have increased the space by tying the spare tire back.

Bolt Holes

This PML GM 10.5 inch differential cover uses 12 of the 14 bolts.

The bolt hole at the bottom was removed because the drain boss is best located there. At the top of the cover another bolt hole was removed to avoid interference with a bracket on some trucks.

The strong flange on the PML cover means that the 2 bolts left out are not missed.

The flange is very thick and blanchard ground to be flat and smooth. This is different than the construction of the stock cover, which is thin and can tweak or deform. We have sold many of these and have never had a problem with leaking.

Metric or Standard Bolts

Please check and order the correct mounting bolt thread diameter. These differentials were made with 3/8-inch (.375 inch) and 8mm (.315 inch) bolts. PML offers the cover in both versions: P/N 9369-1 is for 3/8-inch bolts and P/N 9369-2 is for 8mm bolts.

Temperature Sending Unit Machining (OPTIONAL)

      
Click on image to view larger.

Optionally, this cover can be machined for a temperature sending unit. PML can drill and tap a 1/8 NPT hole on the front face as shown in these pictures. There is a $45 machining charge.

The hole is on the FACE of the cover. PML spot faces the area for a good seal. PML provides a plug for the hole.

PML Differential Cover Compared to Stock

  
Click on image to view larger.

These images show this PML differential cover compared to the stock cover.

This image compares the depth of both PML GM 10 1/2 inch 14 bolt rear differential covers and the stock cover. Click on image to view larger in a new tab or window.

Installations

Installation on a 2014 Silverado 2500

Alex installed this cover on his 2014 Silverado 2500 with the gas engine. PML can supply longer bolts for the holes with the brackets if needed. Just let us know when you order.

      
Click on image to view larger.

Installation on a 2000 Chevrolet K3500

Jerry installed this cover on his 2000 K3500. He did need a longer bolt to attached the bracket to the the PML cover.

      
Click on image to view larger.

Installation on a 1998 K3500

Mike installed this PML differential cover on his 1998 K3500. He does a lot of towing with his K3500 and wants to keep his fluid cooler during trips. He installed the PML rear cover and a transmission pan in 2004. Ten years later the truck still runs great.

      
Images from left to right: PML differential cover installed, K3500 towing a trailer, PML pan installed.
Click on image to view larger.

For information on the transmission pan, see PML part number 9167.

Installation on a 1994 Chevy 3500 7.4

Terry installed a polish finish PML differential cover on his 1994 Chevy 3500.

      
Click on image to view larger in a separate tab or window.

Installation on a 1993 Chevy 3500 Dually

PML differential cover for GM 10 1/2 inch ring gear, 14 bolts, installed on a 1993 Chevy 3500 dually. The PML cover can help keep the differential cool when towing or hauling much heavier (but less attractive) cargo. Our thanks to Joey for the picture.

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.)

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