aFe Street Series Rear Differential Cover (46-71150B) fits 2019–2020 Ram 2500/3500 and adds oil capacity, cooling fins, and magnetic plugs for protection. Designed for trucks equipped with AAM 11.5, 11.8, or 12.0 axles, this cover offers increased oil capacity for improved performance and extended fluid life. It features both internal and external fins that help dissipate heat, maintaining optimal differential temperature even under demanding conditions. The unit comes equipped with a magnetic drain plug, deep reach fill plug, factory-calibrated oil level plug, and a large sight glass for quick inspection.
Key Features :
Designed to fit 2019–2020 Ram 2500/3500 with AAM 11.5/11.8/12.0 axles
Durable cast aluminum construction with black powder coat finish
Machined fins and internal cooling design for enhanced heat dissipation
Increased oil capacity compared to stock for longer service life
Includes magnetic drain and fill plugs for metal particle capture
Built-in calibration plug prevents overfilling
Pre-installed sight glass for fast oil level checks
Technical Notes:
Compatible with vehicles equipped with 14-bolt AAM 11.5, 11.8, or 12.0 axles only.
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