Banks Ram-Air® Differential Cover Kit - GM Duramax 6.6L (2001-2019) / Dodge RAM Cummins (2003-2018) AAM 11.5"/11.8" 14-Bolt (2001-2024)

The Banks Ram-Air® Differential Cover Kit replaces the stock rear cover on GM Duramax and Dodge/RAM trucks equipped with the AAM 11.5" or 11.8" 14-bolt rear axle. The patented Ram-Air scoops direct high-velocity air through external radiator fins to reject differential heat, while internal absorber fins and added oil capacity help extend fluid life. U.S. Patent 10,443,705 B1.Key features A380 die-cast aluminum construction with CNC-machined sealing surface 24 external radiator fins (about 534 in² of surface area) for heat rejection 26 internal heat-absorption fins (about 120 in² of surface area) Patented breakaway Ram-Air scoops direct cool air through the fins Sight-glass with contrast screen and Viton O-ring seal 20° angled fill plug and recessed magnetic drain plug for easier service Dry-mount silicone high-pressure O-ring seal, no RTV required 1/8 in NPT port for differential temp monitoring 304 stainless steel hex flanged mounting hardware Technical specs Weight: 11.7 lbs External heat radiation fin count: 24 Internal heat absorption fin count: 26 Dimensions: 14.2 in x 13.3 in x 3.8 in External heat radiation total surface area: 808.81 in² Internal heat absorption total surface area: 215.78 in² Fasteners: 14 x stainless steel M8-1.25 flange hex bolts Material: A380 aluminum die-cast with CNC-machined surfaces Internal volume: about 4.0 qts (check OEM owner's manual) 1/2 in sight glass with contrast screen and Viton seal Banks recommends Amsoil 75W-90 Severe Gear synthetic gear lube U.S. Patent 10,443,705 B1 FitmentFits the AAM 11.5" or 11.8" 14-bolt rear axle on: 2001-2019 Chevrolet Silverado 2500/3500 and GMC Sierra 2500/3500 (6.6L Duramax diesel and gas models); 2003-2018 Dodge/RAM 2500/3500/4500 (5.9L and 6.7L Cummins); and 2019-2024 RAM 2500 6.4L gas (trucks with straight edges). CARB E.O. not required.InstallationInstallation manual and video from Banks.Service partsAvailable finishes: Black Ops (19269), Satin Black/Machined (19249), Natural Aluminum (19259).Banks parts 19269, 19249, 19259.