aFe 46-70352 Pro Series Cast Aluminum Rear Differential Cover Black & Machined Finish | 2017-2023 Ford F250/F350

Features:

• Fits Dana M275 14-bolt rear axles
• Does not fit dual rear wheel trucks
• Durable A356-T6 cast aluminum construction
• Reinforcing ribs increase housing strength
• 5-quart oil capacity at factory fluid level
• Black powder-coated finish with machined fins
• Integrated cooling fins improve oil temperature control
• Magnetic drain and deep reach fill plugs
• Sight glass prevents overfilling with clear visibility
• Includes calibration plug set to factory level
• Protects differential by capturing metal particles
• Mounting hardware included for easy installation

This Diff Cover Looks Tough And Works Even Harder

If you're ready to give your truck something that looks aggressive and performs just as hard, the aFe 46-70352 Pro Series Differential Cover is the upgrade your rear end deserves. Built for 2017–2023 Ford F-250 and F-350 trucks with a Dana M275 axle, this cover does way more than dress things up. Its black powder-coated finish with machined fins adds a bold touch that turns heads, but the real power is in how it protects your differential. With a 5-quart oil capacity, it holds more fluid than stock to help your truck stay cooler when you're towing heavy or pushing through long highway drives. The sight glass makes checking fluid easy, and it’s paired with a calibration plug so you don’t accidentally overfill. The magnetic drain and fill plugs help trap metal particles before they do damage, keeping things running smooth. Whether you're hitting trails, hauling trailers, or just want peace of mind under the axle, this cover brings both the style and substance.

More Fluid Less Heat And Smarter Protection

The aFe 46-70352 differential cover is engineered with cooling and protection in mind for your Dana M275 rear axle. Made from A356-T6 heat-treated cast aluminum, it brings added strength and thermal efficiency to your rear diff housing. The integrated internal and external cooling fins expand the surface area, helping dissipate heat faster under strain. This helps prevent oil breakdown, especially under heavy loads or extended drives, giving your gear oil a longer life and better stability. With a 5-quart capacity, compared to the factory’s 4, your diff holds more fluid, which contributes to greater thermal endurance. The large sight glass and precisely placed calibration plug make maintenance straightforward, letting you monitor fluid levels and avoid overfilling. Both the fill and drain plugs include Neodymium magnets to capture metal debris, offering an extra layer of protection. Every element of this design serves a purpose, and it’s built to keep your rear differential cooler, cleaner, and running stronger for longer.

Fits: 2017, 2018, 2019, 2020, 2021, 2022, 2023 Ford F250/F350

Notes:

• Fits 2017–2023 Ford F-250 and F-350 with Dana M275 14-bolt rear axles
• Will not fit dual rear wheel (DRW) configurations
• Verify axle type and bolt pattern before purchasing
• Designed to prevent overfilling with calibrated fluid level plug
• Large sight glass allows quick and easy fluid checks
• Increased 5-quart fluid capacity improves heat control
• Intended for trucks under high-load or towing conditions
• Drain and fill plugs include magnetic tips for added protection
• Constructed for long-term durability under harsh use
• Black powder-coated finish may require occasional cleaning to maintain appearance
• Mounting hardware is included for simplified installation
• Installation should be performed with vehicle properly supported and axle cool