40027459 HUMMER Rear Axle Differential H3 4WD

Review HUMMER 3.7l L5 Rear Axle Diff Differential 4.56 Ratio 243k Oem for H3 4WD 2006–2008

The Hummer H3 2006-2008 4WD 3.7L L5 Rear Axle Differential with a gear ratio of 4.56 and part number 243K is an essential component of the vehicle's powertrain system. This differential is specifically designed for Hummer H3 models produced between 2006 and 2008 that feature a 4WD system and a 3.7L L5 engine.

The differential is responsible for transmitting engine power to the wheels while also accommodating for the difference in wheel speed during turns. The 4.56 gear ratio provides an optimal balance between torque and fuel efficiency, making it an excellent choice for off-road enthusiasts and daily drivers alike.

This differential housing is manufactured to the highest standards of quality and durability, ensuring that it can withstand the rigors of off-road driving. The unit is equipped with robust gears, bearings, and seals, which are designed to minimize wear and tear and provide extended service life.

The Hummer H3 2006-2008 4WD 3.7L L5 Rear Axle Differential is also easy to install, making it a popular choice among DIY enthusiasts. The differential comes complete with all necessary mounting hardware, making the installation process straightforward and hassle-free.

Moreover, this differential is compatible with various aftermarket upgrades and modifications, enabling users to customize their Hummer H3 to meet their specific driving needs. Whether you're looking to enhance your vehicle's off-road capabilities or improve its on-road performance, this differential is an excellent investment.

In summary, the Hummer H3 2006-2008 4WD 3.7L L5 Rear Axle Differential with part number 243K is a high-quality and versatile component that is essential for any Hummer H3 owner. With its robust construction, optimal gear ratio, and compatibility with various upgrades, this differential is an excellent choice for those seeking to improve their vehicle's performance and durability.

The Hummer H3 2006-2008 4WD 3.7L L5 Rear Axle Differential 4.56 243K is a crucial component of the vehicle's drivetrain system. Replacing this differential may be necessary due to various reasons, such as wear and tear, damage, or performance upgrades. Let's examine the pros and cons of buying this differential to help you make an informed decision.

1. Improved Performance: A 4.56 differential ratio offers better torque and improved acceleration, making it an excellent choice for off-roading or towing.

2. Durability: Hummer vehicles are known for their robustness and durability, and this differential is no exception. It is built to withstand the rigors of off-road driving, making it a reliable choice for those who frequently venture off the beaten path.

3. Availability: Aftermarket differentials are widely available, ensuring that you can find a replacement or upgrade option that suits your needs and budget.

4. Cost-Effective: In some cases, replacing the differential may be more cost-effective than repairing other parts of the vehicle, especially if the damage is extensive.

1. Cost: While the differential itself may be cost-effective, the labor costs associated with installation can add up quickly, especially if you choose to have it installed by a professional.

2. Complexity: Installing a differential requires specialized knowledge and tools, making it a challenging task for those without experience in automotive repair.

3. Compatibility: Ensure that the differential you purchase is compatible with your specific Hummer H3 model and trim level to avoid any potential issues.

4. Weight: The Hummer H3 is already a heavy vehicle, and adding a heavier differential can negatively impact fuel efficiency and overall performance.

In conclusion, the Hummer H3 2006-2008 4WD 3.7L L5 Rear Axle Differential 4.56 243K offers improved performance and durability, making it an attractive option for off-roading enthusiasts and those who frequently tow heavy loads. However, the cost of installation, complexity of the installation process, and potential compatibility issues are important factors to consider before making a purchase. Ultimately, the decision to buy this differential depends on your specific needs, budget, and expertise in automotive repair.

If you are confident in your ability to install the differential yourself or have the resources to cover the installation costs, this component can provide significant benefits for your Hummer H3. However, if you are unsure about your capabilities or budget, it may be worth considering alternative options, such as repairs or lighter-weight differentials with a lower ratio.

Details:

Transmission: 4-speed automatic 4l60-e. Mileage: 243k miles. Body type: sport utility 4-door SUV. Drive type: four wheel 4WD.

specifications differentialsdepo:

• for models: H3, 4wd
• for years: 2006–2008
• brand: Hummer
• mpn: 40027459
• axle type: Rear Axle
• gear ratio: 4.56
• oe/oem part number: 15862986
• performance part: No
• placement on vehicle: Rear
• type: Differential Housing W/ Knuckles

offer differentialsdepo:

• availability: in stock
• best offers: true
• price: $545.99
• item condition: Used
• in stock #: 1
• started: december 16, 2025
• options: ship-to-home
• sold #: 12

general differentialsdepo:

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

payments differentialsdepo:

• wallet: google-pay
• other
• credit card: discover

shipping differentialsdepo:

• class: economy
• transit: 10-10 days
• type: fixed
• service: economy

returns differentialsdepo:

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

seller differentialsdepo:

• city: kingsley, michigan
• # reviews: 33163
• rating: 99.8%