PPE 338052000 Dana M275 14-Bolt Heavy-Duty Cast Aluminum Rear Differential Cover (RAW) | 2017–2025 Ford F250/F350 Super Duty

Features:

• Fits 2017–2025 Ford Super Duty M275 axle
• Increases fluid capacity by 0.8 quart
• Cast from A356.0-T6 aluminum alloy
• Half-inch fins improve heat dissipation
• Internal scrapers reduce fluid aeration
• Cross-bracing adds structural housing strength
• Cast-in gussets support flange rigidity
• Precision-cast for a smooth, tight fit
• Magnetic plugs capture harmful metal debris
• Viton O-rings resist high fluid temperatures
• Helps prevent clutch pack breakdown in LSDs
• OEM reference number Ford LC3Z4033D

Give Your Rear Axle The Cooling It Deserves

When you’re putting serious miles on your 2017–2025 Ford Super Duty, heat is no small threat, especially when towing, hauling, or running long distances. The PPE Dana M275 Heavy-Duty Rear Differential Cover in silver is built to help your axle stay cooler, stronger, and better protected through it all. Crafted from premium A356.0-T6 cast aluminum, this cover not only adds a rugged look to your rear end but delivers increased durability and performance where it counts. With an additional 0.8 quart of fluid capacity and half-inch external cooling fins, it significantly improves heat dissipation, helping your differential fluid work more efficiently and last longer. It’s a perfect upgrade for any truck that sees heavy use and needs the added thermal protection. The stainless magnetic drain and fill plugs help capture metal particles before they can do any damage, keeping your gears running smoother over time. If you’re looking to boost protection while adding real function and style, this cover checks every box.

Built To Reduce Heat Stress And Improve Gear Protection

The PPE 338052000 rear differential cover is designed specifically for the Dana M275 axle found on 2017–2025 Ford F250 and F350 Super Duty trucks. It’s precision-cast using permanent steel molds, delivering a consistent, high-quality fit with improved dimensional accuracy. Made from A356.0-T6 heat-treated aluminum, the housing offers excellent thermal conductivity and strength over stamped factory covers. Internally, the windage scrapers are strategically placed to minimize fluid churning and foaming, which reduces unnecessary heat generation and helps maintain fluid integrity under load. Externally, the tall half-inch fins work alongside the scrapers to manage heat buildup and reinforce the overall structure with cross-bracing. Cast-in gussets add extra rigidity to the flange area, helping prevent flex and leaks under extreme conditions. Both fill and drain plugs are fitted with high-temperature-rated neodymium magnets and Viton O-rings, offering dependable sealing and filtration of harmful metal debris. This cover is a well-rounded solution for long-term drivetrain health, especially in demanding towing and off-road applications.

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

Notes:

• Specifically designed for Dana M275 14-bolt rear axles
• Fits 2017–2025 Ford F250 and F350 Super Duty models
• Not interchangeable with Dana M300 or M315 axles
• California Prop 65 label 
• All three axle types have 14 bolts but different gear sizes
• Confirm ring gear sizing before purchasing to ensure fitment
• Increased fluid capacity helps maintain cooler operating temperatures
• Ideal for trucks frequently used for towing or hauling
• Improves fluid longevity and gear protection under load
• Cast aluminum construction adds strength and corrosion resistance
• Drain and fill plugs include neodymium magnets for metal capture
• Viton O-rings provide reliable sealing at high temperatures
• OEM part reference number is Ford LC3Z4033D

Install Instructions