OMIX 16503.31 Differential for Case for 76-86 Jeep CJ-5 CJ-7 & CJ-8 Featuring AMC Model 20 Rear Axle Casting Services

For Jeep CJ-5, CJ-7, and CJ-8 owners, the AMC Model 20 rear axle is a legendary workhorse. However, its stock differential cover is a known weak point, vulnerable to impact and offering limited cooling. The OMIX 16503.31 differential cover is engineered specifically to solve these problems, providing unmatched durability and performance for your classic off-roader.

Superior Material and Robust Construction

Unlike flimsy stock covers, the OMIX 16503.31 is precision-cast from a high-strength aluminum alloy. This material choice is critical: it provides a significant increase in impact resistance against rocks and trail debris, while also being lighter than steel alternatives. The design often includes a magnetic drain plug to capture ferrous metal particles from the gear oil, promoting a cleaner lubricant and longer ring-and-pinion life.

Advanced Production for Enhanced Performance

The manufacturing process revolves around high-quality casting services. This technique allows for the creation of a complex, rigid structure with precisely integrated features. Many designs incorporate cooling fins, which dramatically increase the surface area of the cover. As the differential operates, especially under heavy load, these fins dissipate heat more efficiently than a flat cover, helping to prevent gear oil from breaking down and ensuring consistent performance on long, tough trails.

Direct Application and Key Benefits

This cover is a direct bolt-on replacement for the 1976-1986 Jeep CJ series equipped with the AMC Model 20 rear axle. Installation is straightforward, requiring no modification. The key benefits are immediate:

• Durability: Protects your axle's vital components from catastrophic damage.

• Improved Cooling: Finned design maintains lower operating temperatures.

• Contaminant Control: Magnetic plug helps keep gear oil clean.

• Increased Fluid Capacity: Some designs hold extra gear oil for further cooling and lubrication.

Conclusion

For any Jeep CJ enthusiast looking to fortify their Model 20 axle, the OMIX 16503.31 differential cover is a fundamental upgrade. It’s not just a part; it’s an investment in reliability. By combining a superior aluminum casting with a performance-oriented design, it delivers the protection and thermal management needed to tackle the toughest terrain with confidence.