Banks Ram-Air® Differential Cover Kit - Ford Sterling 12-Bolt Axle with 10.25/10.5 Ring Gear (1985-2026)

The Ram-Air® Differential Cover Kit replaces the stock rear cover on Ford trucks with the Sterling 12-bolt axle (10.25 or 10.5 ring gear). Patented Ram-Air scoops direct high-velocity air through external radiator fins for improved heat rejection, while die-cast A380 aircraft aluminum adds strength and a precise fit. Covered by US Patent 10,443,705 B1.

Key features

• A380 aircraft-grade die-cast aluminum with CNC-machined surfaces
• Patented Ram-Air scoops route cool, high-velocity air through the radiator fins; breakaway scoop design
• 24 external radiator fins providing 694.2 in² of surface area
• 22 internal absorber fins providing 103.1 in² of surface area to transfer heat without disrupting fluid flow
• Radiused ports and directional fluid guides for smoother flow
• Integrated dry-mount Viton O-ring seal — no RTV required
• Sight glass with contrast screen and Viton O-ring seal
• 20° angled fill plug and recessed magnetic drain plug for easier oil service
• 1/8 in NPT port for transmission/diff temp monitoring
• 304 stainless steel hex flange mounting hardware

Technical specs

• Weight: 11.7 lbs
• External radiation fins: 24 (694.2 in² fin surface area, 741.9 in² total)
• Internal absorption fins: 22 (103.1 in² fin surface area, 222.2 in² total)
• Dimensions: 13.3 in x 12.8 in x 3.5 in
• Internal volume: approx. 3.3–3.6 qts (check OEM owner's manual; approx. 4.0 qts to OEM fill level)
• Material: A380 aluminum die-cast with CNC-machined surfaces
• Fasteners: 12 x stainless steel 5/16 flange hex bolts
• Banks recommends Amsoil 75W-90 Severe Gear synthetic gear lube

Fitment

Ford F-250/F-350 (and Excursion) with the Sterling 12-bolt axle, 10.25 or 10.5 ring gear, 1985-2026 (gas and diesel applications including 6.9L, 7.3L IDI, 7.3L/6.0L/6.4L/6.7L Power Stroke, and 5.4L/6.8L/7.3L/7.5L gas). CARB E.O. not required.

Installation

Installation manual and video from Banks

Banks parts 19258 (Black Ops), 19252 (Satin Black/Machined), 19262 (Natural Aluminum). Shipping weight approx. 11.7 lb.