SKF 400400 Differential Pinion Seal - Front Outer

SKF Differential Pinion Seal 400400

SKF 400400 is a differential pinion seal built for the front outer position on select Dodge and Jeep applications. It uses a nitrile sealing surface and precise dimensions to help maintain proper axle lubrication while keeping road contaminants out.

Key Features

• Outside diameter: 3.164 in. for accurate housing fit
• Shaft diameter: 1.500 in. for the pinion shaft interface
• Nitrile sealing surface for dependable fluid sealing
• Designed for front outer differential use
• SKF part number 400400 for easy identification

Detailed Description

SKF 400400 is a differential pinion seal engineered for driveline sealing performance where the pinion shaft passes through the axle assembly. SKF has a long history in seal design and manufacturing, and this part reflects that focus with premium materials and application-specific construction. For shoppers searching for a front outer differential pinion seal for a 2000-2002 Dodge Dakota, 2000-2002 Dodge Durango, 2000-2002 Dodge Ram 1500, or 2000 Jeep Grand Cherokee, this seal matches the listed axle application and dimensions. This part cross-references 945353 and 5012453AA for the same application.

What It Helps Address

• Gear oil seepage at the pinion seal area
• Contamination entering the differential housing
• Loss of lubricant that can affect axle operation
• Wear-related sealing issues at the front outer pinion location
• Service replacement needs on Spicer 44 axle applications

Installation Notes and Tips

Verify the shaft diameter and outside diameter before installation to confirm the seal matches the axle housing and pinion interface. Inspect the pinion yoke and sealing surface for grooves, corrosion, or damage that could affect sealing performance. Clean the bore and mating surfaces thoroughly, and install the seal squarely to avoid distortion. Confirm the axle configuration, especially on Spicer 44 axle applications, before final assembly.

Quality Assurance

SKF designs and manufactures seals to specific application requirements using materials selected for the operating environment. The brand’s long-standing seal engineering background supports consistent fit and sealing performance in driveline service.