Overview
The G2 Chrysler 8.25 Inch Aluminum Cover in black, part number 40-2029ALB, is a differential cover made for Chrysler 8.25-inch rear axles. It protects the ring and pinion, and G2 Axle and Gear says its aluminum body helps cool the gear oil.
The cover is cast from lightweight aluminum, heat treated and shot peened so it can take a direct impact on the trail. It also adds a distinct look to the rear axle.
Key features
- Cast from lightweight aluminum to dissipate heat
- Reinforcing ribs for added rigidity and strength
- Heat treated and shot peened to handle a direct impact
- Fully machined seal surface for a leak-free installation
- Black powder coat finish
Installing an aluminum cover
An aluminum differential cover changes how the axle handles heat and impact compared with a stock steel cover. Aluminum conducts heat away from the gear oil more readily, so a cover like this can help keep the oil in a cooler range during long climbs and sustained low-speed crawling. Heavier impacts still call for care on the trail, and a cover that has taken a hard hit should be inspected for cracks before it goes back on.
Before you start, clean both sealing faces thoroughly and remove any old gasket residue. Replacing the gasket and checking the fill plug and drain plug are good habits whenever the cover comes off. Keep track of bolt torque and recheck it after the first few drives, since aluminum and steel can settle differently over time.
- Inspect the seal surface for nicks before fitting
- Replace the gasket each time the cover is removed
- Recheck cover bolts after the first few drives
Specifications
| Brand | G2 Axle and Gear |
|---|---|
| Part number | 40-2029ALB |
| UPC | 631410111781 |
| Material | Lightweight aluminum |
| Finish | Black powder coat |
| Axle location | Rear |
| Axle application | Chrysler 8.25 inch rear axles |
| Oil capacity | Extra capacity |
Vehicle fitment
It is made for the Chrysler 8.25-inch rear axle. Confirm fit for your vehicle’s year, model and trim before ordering.
This cover is sized for the 8.25-inch Chrysler axle only, so check your axle size first. Confirm your vehicle’s year, model and trim before ordering.
What’s included
Check the package contents against your installation before starting.












