Shop with ATI Diesel for Banks Ram-Air Differential Cover for your 2001-2019 6.6L Duramax OR 2003-2018 Dodge Ram diesel.
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
Oil service
- Magnetic Drain plug
- 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)
Fitment
Fits 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.
