G2 Axle & Gear Hammer Differential Cover - GM 14 Bolt 10.5" (Raw Aluminum) - 40-2023AL | 4wheelparts.com

G2 Axle & Gear Hammer Differential Cover - GM 14 Bolt 10.5" (Raw Aluminum) - 40-2023AL

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  • G2 Axle and Gear | Part Number: G/240-2023AL
  • Popular Axle Manufacture:GM
  • Type Of Material:Aluminum
  • Axle Location:Rear
  • Axle Type:GM 14 Bolt 10.5 Inches
  • Fitment:Universal Fit
  • Finish Type:Natural
  • Oil Capacity:Extra Capacity


G2 aluminum differential covers are designed to not only protect your ring & pinion, they are designed to help cool your gear oil for prolonged bearing life. Made from high strength heat treated aluminum to withstand direct hits, these covers help protect your investment while adding a distinct look to your vehicle.

Customer Reviews

4.3 4.3
3 Customer ratings
4.0 Great

4 stars only because it came with the wrong bolts. I had to stop in the middle and run to the store. Otherwise it’s awesome.

from Alton Illinois |
4.0 Quality Cover

The GM 10.5in. 14 Bolt Aluminum Cover is a quality cover for the price. I like the fact that it has a drain hole, fill hole, and oil level hole. The kit comes with a tube of RTV and new bolts for the installation. However, the bolts that came with the kit will not work with the late model 14 bolt axles. The bolts that came in the kit were 3/8 in. coarse bolts and the bolts for the late model axles are 8mm. I had to go to the local hardware store to buy bolts. Make sure you get bolts at least 1 1/2 inches in length due to the recessed threads in the axle housing and the thickness of the cover itself. I also installed hardened flat washers too. For the novice; if your spare is behind the axle, drop it out of the way. This will make your life easier when you install your new cover. Make sure you have extra gear oil about because you will get more volume with this cover.

from Browns Valley, CA |
5.0 Great Look

I like the look of this diff cover. I also like the fill and drain holes which the OEM part didnt have a drain hole.

from HOuston |


Question & Answers

1 Answered question

Q: Does this rear diff cover have a fill plug and a drain plug? Answer this question

A: The G/240-2023AL aluminum differential cover only comes with a drain plug. The GM 10.5” 14 Bolt has the filler plug in the axle housing and does not require one in the cover.

Answered by Stevie on 07/18/2013


G2 Axle & Gear uses the strongest and latest generation materials to manufacture products capable of handling heavy loads. When it comes to axle assemblies, core lockers, driveshafts and sway bars, G2 is the first name in durability and reliability. Off-roading can heap punishment on a Jeep and G2's laser-cut components offer superior handling on challenging terrain and on-road drives. Parts are easy to install and easy to service and above all, they remain operational in adverse environments. Shop G2 Axle and Gear Now