Overview
The G2 Chrysler 9.25 Inch Aluminum Cover Black, part number 40-2028ALB, is a black powder coated rear differential cover for Chrysler 9.25 inch rear axles. It shields the ring and pinion, and G2 says its design helps cool gear oil for longer bearing life.
The cast aluminum body is heat treated and shot peened to withstand direct impact, with reinforcing ribs for strength. It is made for the Chrysler 9.25 inch rear axle. Check fit against your vehicle’s year, model and trim before ordering.
Key features
- Cast from lightweight aluminum for heat dissipation
- Black powder coat finish
- Ribbed body adds rigidity and strength
- Heat treated and shot peened for direct impact
- Machined seal face intended for a leak free fit
Inspecting the differential cover
A differential cover seals the front of the axle housing and protects the ring and pinion from road debris, water and stones. On a rear axle it is also the part you remove when you want to check gear contact, inspect the carrier or change the gear oil, so a cover that is easy to remove and refit without distortion saves time at every service.
Cover gaskets and sealing surfaces are where leaks usually start. Before fitting a cover, clean both faces, remove old gasket material with a plastic scraper and look for nicks or warping. Aluminum covers are softer than steel, so tighten the bolts evenly in a cross pattern and avoid overtightening them.
- Check the fill level after the first few drives
- Look for seepage around the bolt holes after a week of use
- Replace the gasket whenever the cover comes off
- Keep the drain plug and fill plug clean and tight
Specifications
| Brand | G2 Axle and Gear |
|---|---|
| Part number | 40-2028ALB |
| UPC | 631410111828 |
| Material | Cast lightweight aluminum |
| Finish | Black powder coat |
| Axle location | Rear |
| Axle size | Chrysler 9.25 inch |
| Oil capacity | Extra capacity |
Vehicle fitment
The cover is made for the Chrysler 9.25 inch rear axle, and Chrysler is the axle manufacturer named. No years, models or trims are given, so the axle size is the deciding check.
Measure your housing and confirm the axle size before ordering. Confirm your vehicle’s year, model and trim before ordering.
What’s included
Check the package contents against your installation before starting, including any bolts, gasket or drain plug you need.


































