Banks Power Ram-Air Differential Cover Kit

The Banks Power Ram-Air® Differential Cover Kit is a patented, performance-engineered upgrade that attacks the two root causes of differential heat buildup head-on: poor external airflow and flawed internal fluid dynamics. Where conventional aftermarket covers rely on the misconception that more fluid volume alone equals cooler running temperatures, Banks Power's engineering team took a fundamentally different approach—perfecting both internal fluid dynamics and external aerodynamics in one innovative design backed by a United States Patent.

Patented Ram-Air Cooling Technology:

• Ram-Air scoops actively channel high-velocity air through external radiator fins, eliminating the stagnant dead-air zone that forms behind the differential
• FlowThru Fins® transfer heat from the internal fluid through the cover body to the external fin array for maximum heat rejection
• Cools up to 5X better than flat-back high-capacity covers in real-world on-road towing conditions
• Cools 118% better than competing covers in sustained 200 hp, 60 mph testing
• Breakaway scoop design protects against trail and off-road obstacles without sacrificing airflow performance
• Maintains stock ground clearance—no compromise to approach or departure angles

Premium Construction and Hardware:

• A380 aircraft-grade aluminum die-cast construction for exceptional strength and precise fit
• CNC-machined sealing surface delivers a leak-free, precise fit every time
• Dry-mount high-pressure silicone O-ring seal—no messy RTV gasket compound required
• Magnetic fill plug angled for easy, clean fluid fills
• Recessed magnetic drain plug captures metallic wear particles and simplifies fluid changes
• Sight-glass with contrast screen and Viton O-ring seal for quick fluid level checks without removing the cover
• Stainless steel hex flanged mounting bolts included for a complete installation
• Radiused internal ports promote smoother, more efficient fluid circulation around ring and pinion components
• 1/8 in. NPT sensor port for optional differential temperature monitoring

Real Engineering. Real Results.

By simultaneously improving internal fluid dynamics and external aerodynamics, the Banks Power Ram-Air® Differential Cover Kit extends differential fluid life, reduces service intervals, helps preserve fuel economy, and protects ring and pinion gear longevity under the most demanding towing, hauling, and off-road conditions. Each kit ships with all necessary hardware for a straightforward, complete installation. Multiple fitments are available to cover a wide range of axle applications—select your specific variant to find the correct cover for your axle.