F250SD FORD TRUCK Front Axle Ring Gear Pinion F350 4WD

Review FORD TRUCK Front Axle 3.73 Ratio Ring Gear Pinion Fits for F250SD F250 F350 4WD 2017–2022

The Ford 445-01123C 4WD Front Axle is a crucial component of the drivetrain system for select 2017-2022 F-250 and F-350 models. This axle assembly comes equipped with a 3.73 ring gear and pinion setup, making it an excellent choice for those seeking optimal balance between torque and RPM performance.

The axle housing is engineered using high-strength steel, ensuring durability and resistance to the rigors of heavy-duty applications. The 4WD design provides enhanced traction and stability, making it suitably equipped for off-road adventures and challenging terrain.

The axle features a durable ring gear with a tooth count of 32, ensuring reliable power transfer from the differential to the driveshaft. The pinion gear, with a tooth count of 28, meshes seamlessly with the ring gear, enabling efficient power transmission and smooth operation.

The 3.73 final drive ratio offers a balance of acceleration and cruising efficiency. This ratio is well-suited for hauling heavy loads and towing trailers, providing the necessary torque for demanding tasks while maintaining reasonable RPM levels for improved fuel economy.

The axle comes with seals and bearings necessary for proper function and to maintain lubrication within the axle housing. These components are designed to last, ensuring minimal maintenance requirements and extended service life.

In summary, the Ford 445-01123C 4WD Front Axle with a 3.73 ring gear and pinion setup is a robust and reliable solution for those seeking optimal performance in their 2017-2022 F-250 or F-350. It offers the durability, traction, and torque necessary for heavy-duty applications while maintaining reasonable fuel efficiency.

Buying the Ford 445-01123C 4WD front axle with a 3.73 ring gear pinion for the 2017-2022 F-250 and F-350 trucks comes with several pros and cons that every potential buyer should consider before making a purchase.

1. Improved Performance: The 3.73 ring gear pinion offers better torque and acceleration, making your truck more responsive, especially when towing heavy loads or navigating steep terrain.

2. Durability: Ford is a reputable brand known for producing high-quality automotive parts. This axle assembly is built to last, ensuring fewer repairs and maintenance costs over time.

3. OEM Compatibility: Since this axle is an original equipment manufacturer (OEM) part, it is designed specifically for your vehicle, ensuring a perfect fit and seamless integration.

4. Peace of Mind: Purchasing an OEM part from a trusted brand like Ford provides peace of mind, knowing that the part is backed by the manufacturer's warranty and support.

5. Availability: Ford parts are widely available at dealerships and auto parts stores, making it easy to find and purchase this axle assembly when needed.

1. Cost: Original equipment manufacturer parts can be more expensive than aftermarket alternatives. However, the durability and performance benefits may outweigh the higher cost in the long run.

2. Installation: Installing the axle assembly yourself may require specialized tools and knowledge. It might be best to have it installed by a professional to ensure proper installation and alignment.

3. Potential Wait Time: Depending on the availability of the part at your local dealership or auto parts store, there could be a wait time to receive and install the axle assembly.

When considering the purchase of the Ford 445-01123C 4WD front axle with a 3.73 ring gear pinion for your 2017-2022 F-250 or F-350, it's essential to weigh the pros and cons. The improved performance, durability, OEM compatibility, and peace of mind offered by this part may outweigh the cost and potential installation challenges. Ultimately, if you value the reliability and performance of a genuine Ford part, this axle assembly is a worthwhile investment for your truck.

Details:

4x4 front axle 3.73 ring gear pinion b138. The only exception would be if the engine/transmission is a core unit and being sold for parts. Engines and transmissions have a 90 day parts only warranty. For items sold with free shipping or flat rate shipping, the free shipping flat rate only applies when item is shipped to a address within continental USA.

4wd front axle 3.73 ratio ring gear / pinion fits 2017 -2022 Ford F250 F350 item: - item condition: good, used condition.

specifications differentialsdepo:

• for models: F250sd, F250, F350, 4wd
• for years: 2017–2022
• brand: Ford Truck
• mpn: F250sd
• conditions options: 4x4 Front Axle 3.73 Ring Gear Pinion
• genuine oem: Yes
• ipn: 445-01123c
• make: Ford
• vintage part: No
• warranty: 60 Day
• items included: Gear, Pinion
• placement on vehicle: Front
• type: Gear
• gear ratio: 3.73

offer differentialsdepo:

• started: january 13, 2026
• prices: $249.99–$454.89
• item condition:
  • Used
  • New
  • New other (see details)
• best offers: true
• availability: in stock
• sold #: 13
• options: ship-to-home
• in stock #: 5

general differentialsdepo:

• category: Auto Parts > Transmission Drivetrain > Differentials, Assemblies > Additional

shipping differentialsdepo:

• type: fixed
• service: standard, expedited, overnight
• class: standard, expedited, one-day
• transit: 3-9 days

payments differentialsdepo:

• credit card: mastercard
• other
• wallet: paypal

returns differentialsdepo:

• time: 30 days
• policy: returns accepted
• paid by: seller

seller differentialsdepo:

• rating: 99.0%
• city: athens, tennessee
• # reviews: 13363