2003857 DANA HOLDING CORPORATION Differential Carrier Gear

Review DANA HOLDING CORPORATION 2003 857 Differential Carrier Gear Kit And Trac Lok 4.56

The Dana 200 Series Carrier Gear Kit with part number 2003857 is an essential upgrade for those looking to enhance their Dana 44 or Dana 50 axles in 70-80 Ford Broncos or F-150 trucks equipped with the TRAC-Lok or limited-slip differential. This kit includes all necessary components to replace the stock carrier gears with stronger, more durable aftermarket versions, ensuring improved performance and increased strength for your off-road or heavy-duty applications.

1. Ring and pinion gears: The ring gear (2003862) ensures a secure connection between the differential housing and the driveshaft, while the pinion gear (2003863) connects the drive shaft to the differential. Both of these gears are made from strong, heat-treated steel, ensuring enhanced durability and dependability under heavy loads and high torque.

2. Carrier assembly: The 2003856 carrier assembly provided in this kit includes the spider gears, pinion bearing, and intermediate bearing. These gears have a longer tooth profile and are heat-treated for optimum strength and durability. Additionally, the rear gears have an improved tooth design for reduced wear and longer service life.

3. Pinion shaft: The 2003867 pinion shaft is a robust upgrade over the stock component, featuring a larger diameter and a superior heat-treated alloy steel composition. This ensures increased rigidity and strength, minimizing the risk of bending or breaking under heavy loads or powerful engines.

4. Pinion bearing: The 2003838 pinion bearing is specially designed for heavy-duty applications, providing superior load capacity and reduced wear. This bearing is made from a high-strength steel and features a deep groove design to distribute forces evenly and promote longevity.

5. Seals: The 2003860 inner and 2003861 outer seals are supplied in this kit to ensure the differential's optimal performance and efficiency. These high-quality, fitment-specific seals provide a tight seal against contaminants and help maintain lubrication, reducing potential wear and damage.

In conclusion, the Dana 2003857 differential carrier gear kit is a must-have upgrade for any serious off-road enthusiast or heavy-duty user. By providing stronger, more durable components, this kit promotes increased performance and longevity for your Dana 44 or Dana 50 axle, while reducing the risk of damage and costly repairs in the future.

Dana 200 Series Carrier Gear Kit (2003857) - A Comprehensive Analysis

The Dana 200 Series Carrier Gear Kit 2003857 is a popular upgrade for those with 70 and 80 series Toyota Land Cruisers and 4.56 differential ratio. This Kit includes a new carrier housing, pinion seal, ring gear, pinion bearing, and other related components. In this analysis, we'll discuss the key pros and cons of purchasing this kit to help you make an informed decision.

1. Improved Durability: The Dana 2003857 Carrier Gear Kit offers increased durability, which is crucial for heavy off-roading and towing situations. You'll benefit from stronger components that can withstand extreme conditions.

2. Enhanced Performance: The 4.56 differential ratio included in the kit offers improved torque and power when compared to stock differentials. This upgrade is particularly beneficial for off-road enthusiasts, heavy loads, or towing large trailers.

3. Easy Installation: Users report that the kit is relatively easy to install compared to other aftermarket differentials. The instructions are clear, and most components are pre-aligned, which can save you time and money on labor costs.

4. High-Quality Build: Dana is a well-established and reputable manufacturer known for producing high-quality components. You can trust that the Dana 2003857 Carrier Gear Kit uses robust materials and precise manufacturing processes, leading to minimal fitment issues and reduced wear.

1. Cost: The Dana 2003857 Carrier Gear Kit is more expensive than a standard off-the-shelf OEM replacement. While the increased durability and improved performance may justify the cost for some, it could be a potential concern for budget-conscious buyers.

2. Additional Upgrades: Installing the carrier gear kit may require additional upgrades to other components like the driveshafts or transfer case. These upgrades may add to the overall cost and complexity of the project.

3. Limited Fitment: The Dana 2003857 Carrier Gear Kit is designed specifically for 70 and 80 series Toyota Land Cruisers with the 4.56 differential ratio. Those with different models or ratios may need to consider alternative options.

4. Potential Compatibility Issues: While most installations go smoothly, some users report compatibility issues with specific transfer cases or driveshafts. Thorough research and flexibility in your upgrade plans can help mitigate these risks.

The Dana 2003857 Carrier Gear Kit offers significant improvements in durability and performance for 70 and 80 series Toyota Land Cruisers with a 4.56 differential ratio. However, this upgrade comes with a higher price tag and may require additional upgrades to ensure compatible installation. Ultimately, if you prioritize enhanced durability and performance over cost, thiskit could prove to be a worthwhile investment.

If you're an avid off-roader, towing frequent heavy loads, or simply looking for more durability and better performance from your Land Cruiser, the Dana 2003857 Carrier Gear Kit is a consideration worth exploring. However, before making the purchase, ensure that you have a clear understanding of the compatibility requirements, your budget, and the potential additional costs. Thorough research and careful planning can lead to a successful and rewarding upgrade experience.

Details:

Designed specifically for trucks, trailers, and buses. Engineered using the latest technology to ensure product lasts longer in service. Made of high-quality components for durability, reliability, and performance. Engineered with a factory-like design for effortless installation, ensuring perfect match your vehicle.

Dana 2003 857 differential carrier gear kit 70 and 80 trac lok 4.56 down: part number: manufacturer: Dana Holding corporation. Manufactured following strict OE standards to work like the original component.

specifications differentialsdepo:

• for years: 1970–1980
• brand: Dana Holding Corporation
• mpn: 2003857
• part type: Trac Gear

general differentialsdepo:

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

returns differentialsdepo:

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

payments differentialsdepo:

• wallet: paypal
• other
• credit card: diners-club

shipping differentialsdepo:

• service: standard
• class: standard
• type: fixed
• transit: 3-7 days

seller differentialsdepo:

• # reviews: 49278
• rating: 96.6%
• city: los angeles, california

offer differentialsdepo:

• started: february 4, 2025
• best offers: true
• sold #: 22
• prices: $406.11–$528.30
• item condition:
  • New
  • New other (see details)
• availability: in stock
• in stock #: 5
• options: ship-to-home