Dana Spicer 42449 Differential Pinion Seal - Front or Rear

Dana Spicer 42449 Differential Pinion Seal

The Dana Spicer 42449 differential pinion seal is a rubber OE-style replacement for Dana 60 and Dana 70 axle applications. It is built to the same standards used for original equipment Spicer axle parts, making it a direct choice for restoring pinion seal integrity on a wide range of Ford, Dodge, Chevrolet, GMC, and Jeep vehicles.

Key Features

• Rubber seal material for differential pinion sealing applications
• Inside diameter: 1.860 in.
• Designed for Dana 60 and Dana 70 axle models
• OE-quality Spicer axle replacement part
• Part number 42449 for accurate ordering and lookup

Product Details

Built under the Dana Spicer FSGR product line, this differential pinion seal is intended for axle service where the pinion area needs a precise sealing surface. The FSGR line focuses on replacement axle components that match original equipment specifications, and this seal follows that approach with application coverage for rear and front axle positions where listed. This part number 42449 also cross-references Dana Spicer DS42449 for the same application.

Compatible vehicle coverage includes long-tail applications such as Fits 1999-2019 Ford E-350 Super Duty, rear; Fits 2002-2013 Ford F-250 Super Duty, front; Fits 1994-2002 Dodge Ram 2500, rear; and Fits 1996-1999 Jeep Grand Cherokee, rear. It also applies to additional Dana 60, Dana 70, and Dana 44 axle configurations across select Chevrolet, GMC, Ford, Dodge, and Jeep models.

Common Repair Uses

• Stops gear oil leakage at the differential pinion area
• Restores sealing performance after pinion seal wear or hardening
• Addresses seepage around Dana 60 and Dana 70 axle pinion assemblies
• Supports service on front or rear axle applications listed in fitment
• Helps maintain proper differential fluid retention during axle repair

Installation Notes and Tips

Verify axle model, position, and seal dimensions before installation. This seal is listed for Dana 60, Dana 70, and select Dana 44 applications, so matching the axle configuration is essential. On reverse-rotation front axle applications, confirm pinion rotation direction before service. Inspect the pinion yoke and sealing surface for wear, scoring, or contamination before installing the new seal.

Quality Assurance

Genuine Spicer light vehicle axle parts are manufactured to OE standards because they are OE parts. Dana continues to develop Spicer axle components with the goal of meeting or exceeding original equipment requirements for fit, function, and reliability.