PPE 338052010 Dana M275 14-Bolt Heavy-Duty Cast Aluminum Rear Differential Cover (Black) | 2017–2025 Ford F250/F350 Super Duty

Features:

• Fits 2017–2025 Ford Super Duty M275 axle
• Durable black powder-coated aluminum finish
• Increases oil capacity by 0.8 quart
• Cast from A356.0-T6 heat-treated aluminum
• Half-inch cooling fins reduce fluid temperature
• Internal scrapers limit aeration and heat buildup
• Cross-braced structure strengthens axle housing
• Cast-in gussets reinforce flange support
• Magnetic plugs help trap harmful metal particles
• Viton O-rings provide high-temperature sealing
• Precision-cast for perfect fit and finish
• Reference OEM part number Ford LC3Z4033D

Protect Your Rear End With Confidence And Style

If you're putting serious miles on your Super Duty and expect it to handle heavy loads day in and day out, upgrading your rear differential cover is a smart move. The PPE Dana M275 Rear Differential Cover in black is more than just a tough-looking piece, it’s a serious performance upgrade for your 2017–2025 F250 or F350. Built from premium cast A356.0-T6 aluminum, this cover is engineered to manage heat, handle abuse, and outlast your factory stamped steel unit. It holds an additional 0.8 quart of fluid, which means better cooling, longer oil life, and less thermal stress on your gears during towing, hauling, or stop-and-go driving. Thick half-inch fins draw heat away fast, and the black powder-coated finish adds corrosion resistance while looking sharp behind the rear axle. Magnetic service plugs help keep metal shavings out of the gear set, offering peace of mind over long intervals. Whether you're on the highway with a trailer or deep into the backcountry, this cover helps keep your rear differential performing its best.

Optimized For Thermal Efficiency And Load Bearing Strength

The PPE 338052010 rear diff cover is a direct-fit upgrade for Dana M275 axles on 2017–2025 Ford Super Duty trucks, delivering a serious bump in both performance and reliability. It’s precision-cast using steel molds to ensure consistent fitment and dimensional accuracy across every install. The A356.0-T6 aluminum alloy body improves heat transfer compared to stock covers, and the added 0.8 quart fluid capacity provides a thermal buffer when under load. Half-inch external fins rapidly disperse heat, while the internal windage scrapers direct oil away from the gears to reduce fluid churning and temperature spikes. These internal and external features work together to create a reinforced cross-bracing structure that increases the overall rigidity of the differential housing. Cast-in gussets provide extra support at the flange, helping prevent distortion or leaks under high-stress conditions. Stainless plugs are fitted with high-temp rated neodymium magnets to pull harmful particles from circulation, while Viton O-rings ensure reliable sealing. This cover is designed for heavy use and built to protect your drivetrain where it counts most.

Fits: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 Ford F250/F350 Super Duty

Notes:

• Designed specifically for Dana M275 14-bolt rear axles
• Fits 2017–2025 Ford F250 and F350 Super Duty models
• Not compatible with Dana M300 or M315 axles
• California Prop 65 label 
• All three axles use 14 bolts but have different dimensions
• Verify ring gear size before ordering to ensure proper fit
• Ideal for heavy towing, off-road use, and high-mileage trucks
• Helps reduce differential fluid temperature under load
• Supports extended fluid life and improved gear protection
• Black powder coat finish provides added corrosion resistance
• Includes magnetic drain and fill plugs for metal filtration
• Viton O-rings provide durable, high-temperature sealing
• OEM part reference number: Ford LC3Z4033D

Install Instructions