Banks 19281 Raw Ram-Air Differential Cover Kit | 2017-2025 Ford F250/F350 w/ Dana M275

Features:

• Fits 2017–2025 Ford Dana M275 axles
• Patented Ram-Air scoops improve airflow and cooling
• Eliminates dead air zone behind differential
• Boosts fuel economy and gear lubrication life
• Die-cast A380 aluminum for strength and fit
• 534 square inches of cooling surface area
• Sight-glass with contrast screen for easy checks
• Magnetic fill and drain plugs included
• 304 stainless steel hex-flanged mounting bolts
• Precision flow path reduces fluid aeration
• Raw finish provides rugged, industrial appearance
• Road-tested under real towing and hauling conditions

This Cover Turns Airflow Into An Advantage

If you’re tired of throwing parts at your truck that just look cool but don’t actually do anything, the Banks 19281 Raw Ram-Air Differential Cover is a game-changer. Built for real performance, this cover isn’t just there for show, it’s engineered to keep your fluid cooler, your parts running longer, and your truck working smarter. Whether you're towing up a grade or logging highway miles, this cover helps prevent the kind of heat and fluid degradation that kills gearsets over time. The raw aluminum finish gives it a rugged, no-nonsense look that backs up what it was built to do. Thanks to its patented Ram-Air scoops, it pulls in cool air while you drive and forces it through deep cooling fins to reject heat fast. It's one of those upgrades you feel good about every time you hop in the truck, especially when you're pushing it hard. Banks didn’t just design this to compete, they built it to win.

Cooling Efficiency Starts With Smarter Fluid Dynamics

The Banks 19281 is all about solving problems other diff covers ignore. Most aftermarket options rely on deep fins or added oil volume, but that’s only part of the equation. What Banks uncovered through extensive testing is that airflow behind the rear axle is weak, creating a dead zone where cooling fins barely do their job. This led to the patented Ram-Air scoop design, which actively channels outside air through 24 high-efficiency fins totaling 534 square inches of cooling surface. Internally, the flow path eliminates sharp corners and fluid traps, keeping oil moving smoothly across the ring and pinion to avoid foaming and resistance. The A380 aluminum die-cast construction ensures a solid fit on the Dana M275 and stands up to tough conditions. With magnetic drain and fill plugs, plus a built-in sight-glass with a contrast screen, this cover also makes routine maintenance a breeze. Every detail has been thought through and tested under real driving conditions to make sure it delivers where it counts.

Fits: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 Ford F250/F350 w/ Dana M275

Notes:

• Fits 2017–2025 Ford F-250 and F-350 with Dana M275 rear axle
• Does not fit F-350 dual rear wheel (DRW) models
• Not compatible with 2023–2024 High-Output (HO) variants
• Axle verification is required before purchasing to ensure fitment
• Ram-Air scoops may extend slightly beyond factory cover profile
• Engineered to correct airflow dead zones behind the axle
• Designed for real-world towing and load-hauling applications
• Raw finish may develop surface oxidation if left untreated
• Installation space should be verified around sway bars or brackets
• Includes hardware, sight-glass, and magnetic service plugs
• Patent-protected design based on fluid dynamic testing
• Not designed to add fluid capacity, focuses on cooling efficiency