Ram-Air® 99-UP F250 Differential Cover Kit

Key Highlights

• New patented design features Ram-Air scoops for fastest cooling
  • Provides cold high velocity air, overcoming “dead air zone” behind differential
  • Scoops force air up and into massive heat radiation fins
  • Engineered to break-away if snagged on an obstacle
• Banks cools 5X better than flat-back covers in on-road towing tests over the same road, same weather, operator and vehicle
• Cools 118% better than flat-backs in 200hp 60mph sustained tests
• Dry-mount high-pressure silicone O-ring seal. No messy RTV clean!
• Internal fins transfer heat through the cover into the external fins
• Clears spare tire heat shield, Panhard bars and other components
• Does not sacrifice any ground clearance
• Limited Lifetime Warranty

Fluid Dynamics

• Axle tube lubricant guides directs lube to bearings w/o overfilling
• Cover mates flush with differential housing for smooth fluid flow
• Ring gear raceway controls fluid flow to the pinion and bearings
• Low fluid aeration means longer fluid life

Technical Specs

• Weight: 11.7 lbs
• External heat radiation fin count: 23
• Internal heat absorption fin count: 22
• Dimensions: 13.3 in X 12.8 in X 3.5 in
• External heat radiation fin surface area: 694.2 in2
• Internal heat absorption fin surface area: 103.1 in2
• External heat radiation total surface area: 741.9 in2
• Internal heat absorption total surface area: 222.2 in2
• Fasteners: 12 x stainless steel 5/16 flange hex bolts
• Material: A380 aluminum diecast with CNC machined surfaces
• Internal Volume: About 3.3-3.6 Qts (Check OEM Owners Manual)

Oil service

• Magnetic drain plug
• Magnetic fill port plug
• 20° angled fill port for easy access
• No need to remove cover to change fluid
• 1/2 in sight glass with contrast screen (visual aid) and Viton seal
• Banks recommends Amsoil 75W-90 Severe Gear Synthetic Gear Lube
• Fill level depends on model year: (About 4.0Qts Fill To OEM Level)

Ram-Air Differential Cover Install Guide – Sterling 12-Bolt