Remanufactured Dana M300 Rear Differential — 4.30 Ratio, 2017–2022 Ford F-450 Super Duty

When the rear differential on a Ford F-450 Super Duty fails, the stakes are high. These trucks are built for heavy-duty towing, hauling, and commercial work — and downtime is not an option. The US Powertrain Remanufactured Dana M300 Rear Differential with 4.30 gear ratio delivers a professionally engineered solution that restores full drivetrain function with the precision and durability your F-450 demands. Every unit begins with a steel and iron housing that is thoroughly cleaned, media-blasted, and inspected to exacting OEM standards before reassembly. All components that fall outside OE specifications are replaced — no exceptions. New gaskets, OE-quality seals, and premium bearings sourced from Timken and Koyo are installed in every unit, ensuring the internal assembly meets the same performance standards as a new differential. A differential cover is included, eliminating the need to source a separate component. US Powertrain engineers go beyond simple restoration — they evaluate original OEM designs for known weaknesses and incorporate engineering improvements where applicable, delivering a unit that can outperform the original. Backed by a 1-year/18,000-mile warranty, this remanufactured differential is built to handle the punishing demands of Super Duty work truck applications with confidence.

Remanufactured 2017-2022 Ford F450/F550 Pickup DANA M300 4.30 ratio

US Powertrain Remanufactured Rear Differential Dana M300 4.30 Ratio for 2017-2022 Ford F-450 Super Duty - Timken/Koyo Bearings

Remanufactured Dana M300 platform engineered specifically for 2017-2022 Ford F-450 Super Duty — direct-fit replacement with no modifications required.

Premium Timken and Koyo bearings installed in every unit — the same bearing brands trusted by OEM drivetrain engineers for load capacity and long service life under heavy-duty conditions.

All internal components that do not meet OE specifications are replaced 100% — no worn or marginal parts are reused, ensuring every unit performs like new from day one.

New OE-quality gaskets and seals in every unit prevent fluid leaks and maintain proper lubrication under the sustained high-torque loads of Super Duty towing and hauling.

Steel and iron housing is fully cleaned, media-blasted, and inspected before reassembly — delivering a restored-to-OEM-standard foundation that supports long-term reliability.

Backed by a 1-year/18,000-mile warranty — providing documented assurance of US Powertrain's confidence in the engineering and remanufacturing quality of every unit shipped.

WARNING: This product contains chemicals known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.p65warnings.ca.gov.

2017-2022 Ford F-450 Super Duty - Rear Differential (Dana M300, 4.30 Ratio) - Crew Cab Pickup
2019-2022 Ford F-450 Super Duty - Rear Differential (Dana M300, 4.30 Ratio) - Standard Cab Pickup

Brand: US Powertrain
UPC: 00810190612736
Axle Type: DANA M300
Color: Black
Cover Included: Yes
Finish: Black Paint
Gear Ratio: 4.30
Grade Type: Remanufactured
Housing Bolt Quantity: 14
Material: Steel/Iron
Mounting Hardware Included: No
Prop 65 - Long Label: This product may contain a chemical known to the state of California to cause cancer or birth defects. www.p65warnings.ca.gov
Prop 65 - Short Label: WARNING: Cancer – www.p65warnings.ca.gov
Prop 65 Y/N: Y

Warranty Time: 1 YR/18,000 Mi

Applications:

• 2017-2022 Ford F-450 Super Duty - PartType: Differential - Position: Rear
• 2017-2022 Ford F-550 Super Duty - PartType: Differential - Position: Rear