PUMP178916S120 PUMPMART Posi Differential Gear Spline Kit

Review PUMPMART Truck Posi Differential Spider Gear Kit For Ford 8.8 Inch 31 Spline for FORD 1986–2013

Introducing the Pumpmaster Pump178916S120 Posi Differential Gear Kit, specifically designed for Ford 8.8 inch 31 spline rear ends manufactured between 1986 and 2013. This high-performance gear kit is an excellent choice for enthusiasts seeking to enhance their vehicle's power transmission capabilities.

The Pumpmaster Pump178916S120 Posi Differential Gear Kit comes with a robust, forged 9-inch differential housing. This sturdy design allows for superior strength and durability, ensuring that your vehicle can handle increased power and torque. The housing is also compatible with stock and aftermarket 8.8 inch Ford 31 spline axles, making it a versatile option for various applications.

The kit includes a set of strong, heat-treated gears. The ring and pinion gears are made from high-quality material to deliver efficient power transfer and long-lasting performance. The Posi unit itself boasts a robust design with a heavy-duty clutch pack that provides excellent traction and torque capacity. The unit's design ensures quiet operation and minimal wear, making it an ideal choice for both street and track applications.

The Pumpmaster Pump178916S120 Posi Differential Gear Kit features an integrated carrier bearing assembly, eliminating the need for an external carrier bearing. This design not only simplifies the installation process but also ensures a secure fit and optimal performance. The kit also includes a new differential cover, which is made from high-strength aluminum to reduce weight and provide effective cooling.

Installation of the Pumpmaster Pump178916S120 Posi Differential Gear Kit is made easier with the included bearing races and seals. These components ensure a proper fit and seal, preventing leaks and maintaining the differential's integrity. Additionally, the kit includes new bolts and hardware to ensure a secure installation.

In conclusion, the Pumpmaster Pump178916S120 Posi Differential Gear Kit is a top-tier choice for upgrading the power transmission capabilities of your 1986-2013 Ford 8.8 inch 31 spline rear end. With its strong, forged housing, high-quality gears, and quiet, durable Posi unit design, this kit delivers superior strength, efficiency, and performance. Whether you're looking to enhance your daily driver or build a high-performance track car, the Pumpmaster Pump178916S120 Posi Differential Gear Kit is an excellent investment for your Ford vehicle.

Considerations and Recommendation for Buying Pumpmaster Pump178916S120 Posi Differential Gear Kit for 1986-2013 Ford 8.8 31 Spline

The Pumpmaster Pump178916S120 Posi Differential Gear Kit is designed for 1986-2013 Ford 8.8 31 spline rear ends. This kit includes a new differential pump, pressure plate, and thrust washer. In this analysis, we will discuss the potential advantages and disadvantages of purchasing this gear kit.

1. Improved Performance: The Pumpmaster Pump178916S120 Posi Differential Gear Kit can enhance the overall performance of your vehicle by ensuring proper oil flow to the differential. A worn-out pump can lead to poor lubrication, resulting in reduced power and increased wear.

2. Enhanced Durability: The kit comes with new components that are designed to last longer than the worn-out parts in your current differential. Replacing these worn-out components can help extend the life of your differential and improve the reliability of your vehicle.

3. Better Differential Cooling: The new pump design can provide better cooling to the differential, which can help reduce operating temperatures and prevent damage from overheating.

1. Cost: The cost of purchasing and installing the Pumpmaster Pump178916S120 Posi Differential Gear Kit can be significant. Factors such as labor costs, parts cost, and the time required for installation should all be considered before making a purchase.

2. Complex Installation Process: Installing the new gear kit can be a complex and time-consuming process. It may require the use of specialized tools and the disassembly of various components. This can make the installation process more challenging for those without experience.

3. Potential for Leaks: During the installation process, there is a risk of leaks developing, especially if the seal between the new pump and the differential housing isn't properly sealed. These leaks can lead to loss of differential fluid and the need for further repairs.

The Pumpmaster Pump178916S120 Posi Differential Gear Kit offers several advantages, including improved performance, enhanced durability, and better cooling. However, it also comes with disadvantages, such as cost, complex installation, and potential leaks.

Based on the analysis above, it is recommended that you consider the following factors before deciding to purchase the Pumpmaster Pump178916S120 Posi Differential Gear Kit:

1. The level of performance you desire from your vehicle.

2. The cost of the kit and the installation process.

3. Your experience level with vehicle repairs and the availability of specialized tools.

4. The potential impact on your budget if there are any unexpected costs, such as leaks.

If you are comfortable with the installation process and believe the benefits of the kit outweigh the costs, then it may be a worthwhile investment for your vehicle. Otherwise, you may want to consider alternative solutions or delay the purchase until you have the necessary resources to complete the installation properly.

Details:

1.direct replacement - this transfer case motor fits and performs like the original. Transfer case stopped shifting between high and low ranges. Boxes, APO/FPO or military mail box. Newly listed.

Truck posi differential spider gear kit for 1986 -2013 Ford 8.8 - 31 spline note. Factory clutch type posi 7/8 cross shaft. 2.durable construction - made with factory-style electrical connector and weather tight seal to prevent corrosion. Swap out a seized transfer case motor with this direct replacement.

4.quality assured - vehicle-specific application has been validation tested to ensure quality. Designed to install and perform like the original motor, it uses a factory-style connector is sealed for protection. Axle spline:31. Package includes: 1 differential spider gear kit.

specifications differentialsdepo:

• for makes: Ford
• for years: 1986–2013
• brand: Pumpmart
• mpn: Pump178916s120
• manufacturer warranty: 3 Years
• fitment type: Direct Replacement
• shipped country: Us
• placement on vehicle: Rear
• bundle description: 1x Differential Spider Gear Kit
• material: Metal
• note1: For Ford 8.8, 11-14 F150 Only 31 Spline
• note2: 30 Days Free Return
• oe/oem part number: Zikkf8.8-t/l-31, Zikf8.8-t/l-31, F8.8cpk
• specification: For 1986-2013 Ford 8.8 Truck Rearend
• type: Differential Spider Gear Kit
• vintage part: Yes
• universal fitment: No

seller differentialsdepo:

• # reviews: 635
• rating: 99.0%
• city: ontario, california

returns differentialsdepo:

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

general differentialsdepo:

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

shipping differentialsdepo:

• type: fixed
• carrier: fedex
• service: fedex ground economy
• class: economy
• transit: 4-8 days

payments differentialsdepo:

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

offer differentialsdepo:

• quantity: 10
• best offers: true
• started: january 18, 2026
• options: ship-to-home
• availability: in stock
• sold #: 17