fits model: F450sd. make: Ford. year: 1999–2000.

( Brand: Ford Truck ), ( Part Type: Ring Axle Gear ), ( Conditions Options: At, Drw, 4.8 ), ( Genuine Oem: Yes ), ( Ipn: 435-01990a ), ( Manufacturer Warranty: 6 Month )
The Ford 435-01990A rear axle is a critical component of the drivetrain system for select Ford F-450 Super Duty vehicles manufactured between 1999 and 2000. This axle assembly comes with a ring gear of size 11.25 inches and a gear ratio of 4.88:1. The ring gear is the component that engages with the drive propellor of the differential, transmitting engine torque to the wheels.
This Ford rear axle is engineered for heavy-duty applications, making it suitable for towing and hauling heavy loads. The 4.88:1 gear ratio provides the necessary torque and power for such tasks, ensuring optimal vehicle performance. The axle housing is made from high-strength steel, which offers improved durability and resistance to wear and tear.
The 435-01990A rear axle is a crucial replacement part for those experiencing issues with their existing axle or for those looking to upgrade their vehicle's towing capacity. Installing this axle requires professional expertise, as it involves disassembling the drivetrain components and replacing the old axle with the new one. Proper installation ensures reliable performance and extended lifespan for the new axle.
Additionally, this Ford rear axle is designed to meet or exceed the original equipment manufacturer's (OEM) specifications, ensuring that it fits perfectly and functions optimally within the vehicle's drivetrain system. It is essential to note that using a non-OEM axle may result in compatibility issues, potential safety concerns, or reduced performance.
In summary, the Ford 435-01990A rear axle is a heavy-duty, precision-engineered component designed for the Ford F-450 Super Duty vehicles of the 1999-2000 model years. Its 11.25-inch ring gear and 4.88:1 gear ratio make it suitable for towing and hauling applications, while its durable steel housing ensures long-lasting performance. Proper installation by a professional is recommended for optimal results.
The Ford 435-01990A rear axle is a popular choice for those looking to upgrade their 99-00 F450 SD with a higher gear ratio for better towing capacity and off-road performance. Here are some pros and cons to consider before making a purchase.
Pros:1. Increased Torque: The 4.88 gear ratio of the Ford 435-01990A rear axle provides an increase in torque, allowing for better towing capacity and improved performance, especially when hauling heavy loads or climbing steep inclines.
2. Durability: Ford rear axles are known for their durability and strength. The 435-01990A model is no exception and is designed to handle the demands of heavy-duty towing and off-road use.
3. Availability: This rear axle is widely available from various auto parts suppliers, making it easy to find and purchase.
4. Compatibility: It is specifically designed for 99-00 F450 SD models, ensuring a perfect fit.
Cons:1. Cost: The Ford 435-01990A rear axle can be quite expensive, especially when compared to other aftermarket options.
2. Installation: Installing a new rear axle can be a complicated and time-consuming process. It may require professional assistance, increasing the overall cost of the upgrade.
3. Weight: The increased torque and durability of the Ford 435-01990A rear axle come at the cost of added weight, which can negatively impact fuel efficiency.
4. Limited Off-Road Benefits: While the 4.88 gear ratio will provide some benefits off-road, it may not be as significant as other gear ratio options, such as a 5.38 or 5.13.
Conclusion:The Ford 435-01990A rear axle is an excellent choice for those looking to improve their 99-00 F450 SD's towing capacity and durability. Its increased torque and known Ford strength make it a reliable and practical upgrade for heavy-duty use. However, its high cost, complicated installation, added weight, and limited off-road benefits should be carefully considered before making a purchase.
Recommendation:If you primarily use your F450 SD for towing heavy loads or require the added strength and durability of a Ford axle, the Ford 435-01990A rear axle is a solid investment. However, if you're looking for a more budget-friendly option with greater off-road benefits, consider exploring aftermarket rear axle alternatives with different gear ratios.
Chuck and Eddies. FORD F450SD PICKUP 99-00 11.25 ring gear, DRW, 4.88 ratio, ID F81A-BJ. FORD F450SD PICKUP 99-00 11.25 ring gear, DRW, 4.88 ratio, ID F81A-BH. Warranty All parts are covered by our 6 Month Money Back Guarantee.
Rear Axle 11.25 Ring Gear DRW 4.88 Ratio Fits 99-00 FORD F450SD PICKUP 6837631 1.