3L3EAM8E FORD Rear Differential Ring Gear Pinion Mustang

Review FORD 8.8 Inch Rear Differential 3.31 Ratio Ring Gear And Pinion Factory for MUSTANG

The Ford 3L3EAM8E 8.8 rear differential is a high-performance component designed specifically for applications that demand superior traction and durability. This differential is commonly found in Ford Mustangs equipped with the 3.31:1 ring and pinion gear ratio.

The 8.8 inch differential housing is made from strong, yet lightweight cast iron. It features an integral carrier design, which means that the pinion shaft is an integral part of the housing itself. This design helps to reduce flex and increase the overall strength and rigidity of the differential.

The differential utilizes a heavy-duty, forged steel ring and pinion gear set. The ring gear has a tooth count of 32, while the pinion gear has a tooth count of 19. The gears are precision machined to ensure a perfect fit and optimal tooth engagement. The 3.31:1 gear ratio provides an excellent balance between acceleration and top end speed.

The differential also features a heavy-duty, heat-treated spider gearing. The spider gears transfer power from the ring gear to the pinion gear, and their robust design helps to handle the high loads and torque generated during aggressive driving.

The 8.8 rear differential is also equipped with a limited-slip differential unit. This unit uses clutch packs to provide power to both wheels during cornering, helping to prevent wheel slip and improve traction. The differential can be adjusted to provide varying levels of differential action, allowing the driver to customize the handling characteristics of their Mustang.

The differential comes with a new bearings kit, which includes new pinion bearing, two new wheel bearings, and two new pinion seal. The bearings are pre-lubed with high-performance synthetic gear oil to ensure a smooth and quiet operation right out of the box.

Overall, the Ford 3L3EAM8E 8.8 rear differential is a high-performance component that delivers superior traction, durability, and handling characteristics. It is an excellent choice for Mustang enthusiasts who are looking to maximize the performance of their vehicle.

Buying a Ford 3.31 ring gear pinion differential for a Mustang with a 8.8 rear end involves considering several factors to determine if it's the right choice for your needs. Here are some pros and cons to help you make an informed decision:

1. Improved Performance: A 3.31 ring gear pinion differential provides better acceleration and quicker response times compared to the standard 2.73 or 3.55 gears. This makes it an excellent choice for Mustang owners looking to improve the vehicle's performance.

2. Customizability: The ability to choose a specific gear ratio allows for customization to suit different driving styles and track conditions. For example, a lower gear ratio like 3.31 is suitable for road racing, while a higher ratio like 3.55 is better for highway cruising.

3. Durability: Ford's 8.8 rear end differential is known for its strength and durability. The 3.31 ring gear pinion setup is no exception, making it a popular choice among Mustang enthusiasts.

4. Availability: The Ford 3.31 ring gear pinion differential is readily available from various aftermarket suppliers, making it easy to purchase and install.

1. Cost: A 3.31 ring gear pinion differential is more expensive than the standard gears. This cost includes the differential itself, as well as any necessary modifications, parts, or labor involved in the installation.

2. Complexity: Installing a 3.31 ring gear pinion differential can be a complex process that requires specialized tools and knowledge. This may make it a more challenging DIY project for some Mustang owners.

3. Noise: A lower gear ratio like 3.31 can produce more noise than a standard gear setup. This is due to the increased engine RPMs required to reach the same speed.

4. Fuel Economy: The lower gear ratio can negatively impact fuel economy, as the engine must work harder to turn the wheels at higher RPMs.

In conclusion, the Ford 3.31 ring gear pinion differential for a Mustang with an 8.8 rear end offers improved performance, customizability, durability, and availability. However, it also comes with higher costs, complexity, increased noise, and reduced fuel economy. Ultimately, the decision to purchase a 3.31 ring gear pinion differential depends on your specific driving needs, budget, and experience level.

If you're looking for improved performance and are willing to accept the added costs and complexity, then a 3.31 ring gear pinion differential may be the right choice for you. However, if you prioritize fuel economy, quiet operation, or a simpler installation process, then you may want to consider sticking with the standard gear ratio.

Details:

Condition: used. Once a package is in the hands of carrier it out my control. If this is the case for you, please message me directly prior to filing a return.

Part: Ford 8.8 inch rear differential 3.31 ratio ring gear and pinion Mustang factory. Items over $600 usually require signature for delivery no questions. The shipping method cannot be changed after the order is placed. Thanks again.

Model fitment: 3.31 ratio for 8.8 rear end. I will get back to you as soon possible. Many parts I sell are used.

specifications differentialsdepo:

• for models: Mustang
• brand: Ford
• mpn: 3l3eam8e
• type: Pinion
• bore diameter: 8.8 In
• placement on vehicle: Rear

shipping differentialsdepo:

• class: standard
• type: fixed
• carrier: ups
• transit: 3-8 days
• service: ups ground

offer differentialsdepo:

• availability: in stock
• sold #: 13
• options: ship-to-home
• price: $179.95
• item condition: Used
• started: november 18, 2025
• in stock #: 1
• best offers: true

payments differentialsdepo:

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

seller differentialsdepo:

• city: charlotte, north carolina
• # reviews: 4334
• rating: 99.4%

general differentialsdepo:

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

returns differentialsdepo:

• policy: no returns