Banks Power Ram-Air Differential Cover Kit

The Banks Power Ram-Air® Differential Cover Kit is a U.S. Patent-protected drivetrain upgrade engineered for full-size pickup trucks that demand superior differential cooling, lubrication protection, and long-term gear durability. Where conventional aftermarket covers rely solely on increased fluid volume, Banks Power's engineering team identified two fundamental flaws in flat-back designs — poor airflow and compromised fluid dynamics — and built a scientifically validated solution that actively solves both.

Patented Ram-Air Cooling Technology:

• Ram-Air scoops channel cool, high-velocity air directly through heat-radiation fins, overcoming the dead-air zone that forms behind the differential at speed
• Proven to cool 5x better than flat-back aftermarket covers in real-world on-road towing tests conducted under identical road, weather, and load conditions
• Outperforms flat-back competitors by 118% in controlled 200hp, 60mph sustained dyno tests
• Breakaway scoop design protects against snag damage on trail obstacles without sacrificing on-road cooling performance
• Retains the same low point as factory and competitor covers — no ground clearance is sacrificed

Superior Internal Fluid Dynamics:

• Internally contoured to guide fluid flow around the ring and pinion, preventing the foaming and aeration that rob lubrication efficiency and generate heat
• Outperforms both stock and high-capacity flat-back covers while using less lubricant, extending service intervals and reducing operating costs
• FlowThru Fins® transfer heat through the cover body to the exterior fins for maximum thermal rejection
• Engineered to reject BTUs as fast as the ring and pinion generate them — protecting gear life under sustained towing and hauling demands

Premium Construction and Serviceability:

• Die-cast from A380 aircraft-grade aluminum for exceptional strength and precise fit
• Multiple external radiator fins deliver class-leading heat rejection surface area
• Magnetic drain plug captures ferrous wear particles to protect gear sets and simplify fluid changes
• Angled fill port allows easy fluid additions without removing the cover
• Sight glass with Viton O-ring seal for quick, mess-free fluid level inspection
• Stainless steel mounting hardware included for long-term corrosion resistance
• Dry-mount high-pressure silicone O-ring seal — no messy RTV required
• 1/8 in. NPT sensor port for optional differential temperature monitoring

Available in multiple axle fitments and finish options for full-size pickup trucks, the Ram-Air Differential Cover Kit is a direct bolt-on upgrade backed by Banks Power's decades of scientifically validated performance engineering — the same company behind national championships, world records, and the U.S. military's high-performance engine program. Select your specific axle application from the available variants to find the right fit for your truck.