Pacific Performance Engineering (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)
![Pacific Performance Engineering (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.jpg?v=1769620389&width=800)
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Price tracked 14 times since Jul 26, 2026 across the stores we check daily: 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.
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 how we check a price and our affiliate disclosure.