# aFe Power Rear Diff Cover Black w/Machined Fins 17-19 Ford 6.7L (td) Dana M300-14 (Dually) w/ Oil

aFe Power's new rear differential cover brings performance engineering to the protection of your axle's differential. This differential cover is constructed out of durable A356-T6 cast aluminum with reinforcing ribs for maximum strength. Mounting hardware is included for a hassle-free installation. An oil level sight glass and calibration plug set to the factory level prevents overfilling of the differential. A magnetic drain plug and a deep reach magnetic fill plug are provided for maximum protection. This cover is finished with black powder-coating and machined fins for a distinctive look. 5 Quart Gear Oil Capacity: This cover has about a 5 quart gear oil capacity at the factory fill level, factory cover holds about 4 quarts. Built-in Cooling Fins: Built-in internal and external cooling fins increase surface area to maximize cooling of the differential oil. Magnetic Drain/Fill Plug: This system incorporates a magnetic drain and deep reach fill plug that captures loose particles for maximum rear-end protection. Oil Level Sight Glass: Large oil level sight glass with 1/8'' NPT calibration plug set to the factory fluid level to eliminate overfilling .Pro GUARD D2 Synthetic Gear Oil: This competition proven formulation utilizes a group IV synthetic base along with a proprietary additive package that reduces drag, resist foaming and maintains its viscosity under extreme heat and high loads.

-   Reinforcing Ribs and Black Powdercoating w/Machined Fins
-   Magnetic Drain and Fill Plugs Capture Loose Particles
-   Incl. 6 Quarts Pro GUARD D2 Synthetic Gear Oil 75W-90
-   Large Oil Level Sight Glass w/ Calibration Plug
-   Constructed of Durable A356-T6 Cast Aluminum
-   Fits Ford Dana M300-14 Bolt Axles

This Part Fits:

Year

Make

Model

Submodel

2017-2023

Ford

F-350 Super Duty

King Ranch

2017-2023

Ford

F-350 Super Duty

Lariat

2018-2023

Ford

F-350 Super Duty

Limited

2017-2023

Ford

F-350 Super Duty

Platinum

2017-2023

Ford

F-350 Super Duty

XL

2017-2023

Ford

F-350 Super Duty

XLT

## Details

- **Price:** 634.01 CAD
- **Vendor:** aFe
- **Type:** Diff Covers

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 634.01 CAD | In stock |

## Images

- Photo - Primary
- User 4
- Photo - Unmounted
- Photo - Unmounted

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/afe-power-rear-diff-cover-black-w-machined-fins-17-19-ford-6-7l-td-dana-m300-14-dually-w-oil)
> Updated: 2026-07-15