PUMP178915S120 PUMPMART Differential Locker Spline Pin Shaft

Review PUMPMART Differential Locker Fits Ford 8.8 Inch 31 Spline Includes Heavy-duty Pin Shaft for FORD CROSS

Introducing the Pumpmasters Pump178915S120 Differential Locker for Ford 8.8-inch 31 Spline Heavy-Duty Cross Pin Shaft, a superior performance upgrade for your vehicle's differential system. This differential locker is meticulously engineered to provide enhanced traction, control, and durability for your off-road adventures or heavy-duty applications.

The Pumpmasters Pump178915S120 Differential Locker is designed specifically for Ford 8.8-inch rear ends with a 31-spline heavy-duty cross pin shaft. It features a robust, one-piece, forged steel design, ensuring maximum strength and durability. The locker utilizes high-quality, heat-treated gears that are precision-machined for accurate fitment and smooth operation.

This differential locker employs a unique, automatic locking mechanism that engages when power is applied to the wheels, distributing torque evenly between them for optimal traction. The self-contained design of the locker ensures easy installation, as it does not require any external wiring or hydraulic lines.

The Pumpmasters Pump178915S120 Differential Locker is ideal for a wide range of applications, including off-roading, towing, and high-performance driving. Its heavy-duty construction and high-strength materials make it capable of handling the most demanding conditions, ensuring a reliable and consistent performance.

Additionally, this differential locker is engineered for seamless integration with your vehicle's existing drivetrain components, ensuring a hassle-free installation process. It is backed by Pumpmasters' industry-leading warranty, providing you with peace of mind and confidence in your purchase.

Upgrade your Ford 8.8-inch differential system with the Pumpmasters Pump178915S120 Differential Locker for superior traction, control, and durability. Say goodbye to wheel spin and enjoy the confidence that comes with knowing your vehicle is ready for any challenge the road ahead may bring.

The Ford 8.8 31 spline differential is a popular choice for heavy-duty applications due to its strength and durability. One way to enhance the performance and capabilities of this differential is by installing a differential locker, such as the Pumpkin Performance Pumpkinmart Pump178915S120. Here are some pros and cons to consider before making a purchase.

1. Enhanced Traction: A differential locker allows both wheels on an axle to rotate at the same speed, providing maximum traction in slippery conditions. This can be particularly useful in off-road situations where one wheel may spin out while the other has grip.

2. Improved Performance: With the power being evenly distributed to both wheels, the differential locker can help improve the overall performance of the vehicle by reducing wheel hop and improving power transfer.

3. Increased Durability: The Pumpkinmart Pump178915S120 is specifically designed for heavy-duty applications, featuring a strong 120 tooth pinion gear and heavy-duty cross pin shaft. This can help increase the longevity of the differential and reduce the need for costly repairs or replacements.

4. Versatility: This differential locker is compatible with a wide range of Ford 8.8 inch differentials, making it a versatile option for those looking to upgrade their vehicle.

1. Cost: A differential locker is a more expensive upgrade compared to other performance modifications. The cost of the Pumpkinmart Pump178915S120, along with the cost of installation, can add up quickly.

2. Complexity: Installing a differential locker requires a fair amount of mechanical knowledge and experience. If you're not comfortable with the installation process, it may be worth considering hiring a professional to do it for you.

3. Noise: Some users have reported an increase in noise levels after installing a differential locker. This is due to the additional components and increased power being transferred to the wheels.

In conclusion, the Pumpkin Performance Pumpkinmart Pump178915S120 differential locker can provide significant benefits for those looking to enhance the performance and capabilities of their Ford 8.8 inch differential. However, it comes with a higher cost and increased complexity, and some users may experience an increase in noise levels. Ultimately, the decision to purchase a differential locker depends on your individual needs and preferences.

If you're looking for a reliable and durable option that can provide maximum traction and improved performance in off-road situations, then the Pumpkinmart Pump178915S120 may be worth the investment. However, if you're on a budget or not comfortable with the installation process, then it may be worth considering other performance modifications or waiting until you have more experience and resources.

Details:

Replaces the spider gears in a standard carrier case - will not fits limited slip differential. The internal gears on the locker will override each other to allow this distinction. Package includes: 1 differential locker. Feature: function:when driving in a straight line, the locker will lock axles together, similar to spool.

Differential locker fits Ford 8.8 31 spline includes heavy-duty Cross pin shaft note. Effect: the operation of differential locker is fully automatic. Quality, quench and precision cut teeth ensure long life performance. Fits Ford 8.8 with 31 spline axles and 7/8 Cross pin shaft.

Newly listed. Boxes, APO/FPO or military mail box. However, when the wheels need to be differentiated during a turn, locker will allow outer rotate faster complete turn.

specifications differentialsdepo:

• for models: Cross
• for makes: Ford
• brand: Pumpmart
• mpn: Pump178915s120
• manufacturer warranty: 3 Years
• fitment type: Direct Replacement
• shipped country: Us
• custom bundle: No
• bundle description: 1x Axle Differential Locker
• material: Metal
• note1: For Ford 8.8, 11-14 F150 Only 31 Spline
• note2: 30 Days Free Return
• oe/oem part number: Sl F8.8-31, Slf8.8-31, Xd-48831
• specification: For Ford 8.8 31 Spline
• type: Differential Locker
• vintage part: Yes

returns differentialsdepo:

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

offer differentialsdepo:

• best offers: true
• started: december 18, 2025
• quantity: 10
• options: ship-to-home
• sold #: 18
• availability: in stock

general differentialsdepo:

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

payments differentialsdepo:

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

seller differentialsdepo:

• # reviews: 619
• rating: 99.1%
• city: ontario, california

shipping differentialsdepo:

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