National 719316 Differential Pinion Seal - Front Outer or Rear Outer

National 719316 Differential Pinion Seal

National 719316 is a differential pinion seal built for rear outer and front outer axle applications that require precise sealing at the pinion shaft. With fluoro-elastomer construction and OE-style dimensions, it is specified for a wide range of Dodge Ram 2500, Ford E-350 Econoline, and Jeep Grand Cherokee fitments.

National has supplied sealing solutions for more than 75 years, and this 719316 oil seal reflects that focus on dimensional accuracy and durable sealing materials. It is a direct-fit style replacement for applications that call for a 1.875-inch shaft diameter, 2.805-inch outside diameter, and 0.530-inch width.

Key Features

• Part number: 719316
• Part description: oil seal / differential pinion seal
• Fluoro-elastomer material for sealing performance in driveline service
• Inside diameter: 1.875 in. / 47.630 mm
• Outside diameter: 2.805 in. / 71.240 mm
• Width: 0.530 in. / 13.460 mm
• Flanged outside diameter: 3.165 in. / 80.390 mm
• Housing bore: 2.797 in. / 71.040 mm
• Overall width with side lip: 0.695 in. / 17.650 mm
• Series: 719000, Type 72

Detailed Description

This National differential pinion seal is engineered for axle assemblies that need a reliable barrier between the pinion area and differential lubricant. The listed dimensions and fluoro-elastomer material make it a strong match for service work where the original seal has hardened, leaked, or worn from age and heat. National 719316 is listed across multiple interchange references, including Dorman HELP 42449 and Four Seasons 47885, and it cross-references Gates 18706 and 18896 for the same application.

Fitment coverage includes 1994-2002 Dodge Ram 2500 rear outer, 1987-2000 Ford E-350 Econoline rear outer, 1987-2000 Ford E-350 Econoline Club Wagon rear outer, and 1999-2000 Jeep Grand Cherokee rear outer applications, along with additional Dodge, Ford, and Jeep axle configurations. For buyers searching by vehicle, this seal is commonly selected for Dodge Ram 2500 rear outer pinion seal service, Ford E-350 Econoline rear outer differential repair, and Jeep Grand Cherokee rear outer axle sealing.

What It Helps Address

• Gear oil seepage at the differential pinion area
• Wet housing or driveline contamination around the pinion seal
• Seal wear caused by age, heat, and mileage
• Noise or driveline issues related to low differential fluid from leakage
• Service replacement for damaged or hardened OE-style seals

Installation Notes and Tips

Verify the shaft, housing bore, outside diameter, and width before installation to confirm the seal matches the axle specification. Clean the sealing surface and inspect the pinion yoke or race area for wear, scoring, or corrosion before pressing in the new seal. For fitment-specific searches, confirm the axle type and ring gear notes listed for your vehicle, especially on Dodge Ram 2500, Ford E-350 Econoline, and Jeep Grand Cherokee applications.

Quality Assurance

National is recognized for premium sealing solutions and long-running coverage in the aftermarket. Part number 719316 is built to the listed dimensional specifications and material standard for differential pinion seal service.