PPE Heavy-Duty Cast Aluminum Rear Differential Cover, 11.5in/11.8in 14-Bolt [238053000]
Fits 2019-2025 6.7L Cummins I6 (Standard Output) · 6.7L Cummins I6 (unified)
![PPE Heavy-Duty Cast Aluminum Rear Differential Cover, 11.5in/11.8in 14-Bolt [238053000] for 2019-2025 Ram 2500/3500 (6.7L Cummins I6 (Standard Output), 6.7L Cummins I6 (unified))](https://ppepower.com/cdn/shop/files/2019-2025-RAM-HD-11.5_-11.8_-14-Bolt-Heavy-Duty-Cast-Aluminum-Rear-Differential-Cover-Pacific-Performance-Engineering-192185051_2500x.jpg?v=1769620389)
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Price tracked 7 times since Jul 26, 2026: low $296.99, high $329.99, currently $296.99.
Requires: 2019-2025 Ram HD with the 11.5in or 11.8in 14-bolt rear axle. Available raw, brushed or black per PPE.
where to buy · 3 retailers tracked
The differential cover is the plate bolted to the back of your rear axle housing that holds the gear oil in. This is a thick cast aluminum replacement for the stamped steel factory cover, and it holds about three quarters of a quart more oil.
why this one — Extra oil volume and aluminum fins matter most if you tow heavy or run in hot country, because gear oil temperature is what kills rear differentials. It also has a drain plug, which the factory cover does not, so future gear oil changes stop being a messy job of pulling the whole cover off. The honest downside is that this does nothing for a truck that never tows, and it is a cosmetic upgrade at that point.
A differential cover does not make power. PPE publishes a 0.7 quart oil capacity increase for thermal headroom. source ↗
No published gain figure for this part, and nothing here is a guarantee. Price is a list price and can lag the retailer; confirm at checkout. See our affiliate disclosure.