What does a pinion seal do?

The pinion seal is located where the driveshaft connects to the rear differential. Its main job is to prevent the gear oil inside the differential from leaking out around the pinion shaft while also keeping dirt and moisture from getting in.

What vehicles does this Yukon pinion seal fit?

This seal is designed for Ford 10.25-inch rear differentials and fits many Ford and Lincoln vehicles. This includes models like the Ford Expedition, F-150, F-250, F-350, and Lincoln Navigator, among others.

What is the outer diameter of this seal?

This Yukon Mighty Seal has an outer diameter of 3.096 inches. This specific measurement is important for ensuring it seats correctly in the differential housing.

Yukon Gear Pinion Seal YMS4278 for Ford 10.25in

Name: Yukon Gear Pinion Seal For 10.25in Ford
Brand: Yukon Gear & Axle
Price: 20.89 USD
Availability: InStock

Yukon Gear Pinion Seal For 10.25in Ford

$20.89

Only 1 left in stock

Yukon Gear pinion seal for Ford 10.25in differentials. Ensures a tight seal to prevent leaks.

Key Features

Fits Ford 10.25 inch rear differentials.
Features a 3.096 inch outer diameter for a precise fit.
Yukon Mighty Seals are built using advanced design and manufacturing technologies.
Helps prevent gear oil leaks from the differential pinion.
Designed for a tight seal that lasts for years.
Fits a wide range of Ford and Lincoln vehicle models.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Will this fit your vehicle?

Product Details

If you're working on the rear differential of a Ford truck or SUV, chances are you'll need a reliable pinion seal. This Yukon Mighty Seal is designed specifically for Ford's 10.25-inch rear axle, a common setup on many F-Series trucks, E-Series vans, and Expedition and Navigator models. A good pinion seal is crucial for keeping gear oil where it belongs, preventing leaks that can lead to low fluid levels and potential damage to your differential.

Yukon Gear & Axle uses advanced design and manufacturing techniques to create these Mighty Seals. The goal is a precision fit that seals tightly against the pinion shaft, offering long-lasting protection against leaks. The seal has a 3.096-inch outer diameter, ensuring it seats properly in the differential housing for a secure installation. This seal is a well-built component that helps keep your drivetrain running smoothly.

This seal fits a wide range of Ford and Lincoln vehicles from the mid-80s through the early 2010s. Make sure to check the fitment guide to confirm it's the right part for your specific application before you begin your repair.