National 711078 Drive Axle Shaft Seal - Rear

Drive Axle Shaft Seal for Rear Axle Service

National 711078 is a metric drive axle shaft seal built for rear axle sealing applications that demand accurate sizing and stable lip contact. It is designed for vehicles using a 198 mm ring gear with a ZF axle, including select Chrysler 300, Dodge Challenger, Dodge Charger, and Dodge Magnum applications.

With a polyacrylate sealing material and a bi-directional lip design, this National oil seal is engineered to help maintain a consistent seal at the axle shaft interface. The National 711078 is part of the 711000 series and is sized for metric housings and shafts.

Key Features

• Drive axle shaft seal / oil seal for rear axle service
• Polyacrylate sealing material for durable sealing performance
• Bi-directional lip design for sealing in either rotational direction
• Metric dimensions for precise housing and shaft fit
• Flanged outside diameter: 4.961 in. / 126.000 mm
• Outside diameter: 4.039 in. / 102.600 mm
• Housing bore: 4.028 in. / 102.300 mm
• Shaft size: 1.771 in. / 45.000 mm
• Overall width with side lip: 0.720 in. / 18.300 mm
• National part number 711078

Detailed Description

National has supplied sealing solutions for more than 75 years, and this axle shaft seal reflects that focus on fit and sealing control. The 711078 is a rear drive axle shaft seal for applications that require a 198 mm ring gear and ZF axle, including Chrysler 300, Dodge Challenger, Dodge Charger, and Dodge Magnum models. It also cross-references Elring 906.050 for the same application.

Use National 711078 when you need a metric oil seal with a 45 mm shaft size, 102.6 mm outside diameter, and a bi-directional lip profile that supports axle sealing at the housing interface. The National 711078 is a direct-fit sealing component for select rear axle service work on Chrysler 300 and Dodge Charger platforms, as well as other listed applications.

Common Problems This Seal Helps Address

• Rear axle gear oil leakage at the shaft seal area
• Fluid seepage caused by worn or hardened sealing lips
• Contamination entering the axle housing through a damaged seal
• Noise or driveline concerns related to low axle lubricant level
• Service issues on vehicles with a 198 mm ring gear and ZF axle

Installation Notes and Tips

• Confirm the axle configuration before ordering; this part is listed for rear applications with a 198 mm ring gear and ZF axle.
• Measure the housing bore and shaft dimensions to verify the seal matches the application.
• Inspect the axle shaft surface for wear, scoring, or corrosion before installing the new seal.
• Clean the seal bore and surrounding housing thoroughly so the seal seats evenly.
• Use proper installation tools to avoid distorting the sealing lip or outer case.

Quality Assurance

National designs sealing products with current vehicle requirements in mind and backs the 711078 with more than 75 years of sealing-system experience. The part is built as a metric oil seal for precise axle service applications and is supported by National’s established reputation in driveline and sealing components.