Overview
The G2 AAM 11.5 Inch 14 Bolt Ball Milled Aluminum Cover (part 40-2024MB) is a black cast aluminum rear differential cover for AAM 11.5 inch 14 bolt axles, with extra oil capacity.
The body protects the ring and pinion while helping the gear oil shed heat, which G2 ties to longer bearing life. Heat treated and shot peened aluminum resists direct hits, and the ball milled ribs add strength. A machined seal surface and a set of service plugs make the cover practical to maintain as well as to look at.
Key features
- Cast lightweight aluminum body
- Ball milled reinforcing ribs
- Heat treated and shot peened to withstand direct impacts
- Machined seal surface
- Filler plug for easy service
- Fill level plug for an accurate fill level
- Drain plug and dipstick for maintenance
Rear cover maintenance
A differential cover protects the gears from road debris, and the built-in plugs make fluid service easier. Clean the mating surface before reinstalling, and use a fresh gasket or sealer as the axle requires. Check the cover for dents after any impact, since a bent flange can cause leaks.
Aluminum covers dissipate heat better than stamped steel, but they still need a secure fit. Tighten the bolts evenly, and check for play or cracks around the mounting ears. Keeping the fill level correct helps the gears run cooler, which protects the bearings and seals.
Gear oil choice matters for the carrier. Use the oil type that suits your axle rather than a general purpose oil, and change it on a regular schedule, especially after towing or deep water. A dipstick check after the first few drives confirms the level is holding.
- Clean the mating face before fitting
- Check the level after the first drives
Specifications
| Brand | G2 Axle and Gear |
|---|---|
| Part number | 40-2024MB |
| UPC | 631410113020 |
| Material | Cast aluminum, heat treated and shot peened |
| Finish | Black powder coat |
| Axle location | Rear |
| Axle type | AAM 11.5 inch 14 bolt |
| Oil capacity | Extra |
| Service plugs | Filler, fill level and drain |
| Dipstick | Included |
Vehicle fitment
It fits AAM 11.5 inch 14 bolt rear axles. Confirm the bolt count and axle size on your housing before ordering, and confirm fit for your vehicle’s year, model and trim before ordering.
Measure the bolt count and axle size on your housing before ordering.
What’s included
A black aluminum cover with filler, fill level and drain plugs and a dipstick.
Not included: Gear oil.
