National 716102 Engine Crankshaft Seal - Rear

Overview of National Engine Crankshaft Seal 716102

The National 716102 engine crankshaft seal is designed to provide reliable sealing performance for various European and American vehicles. Engineered with nitrile material and a counter-clockwise spiral lip design, this oil seal ensures effective protection against oil leaks in crankshaft applications.

• Inside diameter: 85 mm (3.346 inches)
• Outside diameter: 105.28 mm (4.145 inches)
• Width: 13 mm (0.512 inches)
• Material: Durable nitrile rubber
• Helix type: Counter-clockwise spiral lip design for enhanced sealing
• Compatible with multiple makes including Audi, Bentley, Dodge, Plymouth, Porsche, Volkswagen, and Volvo

Technical Details and Specifications

The National 716102 crankshaft seal features a 32-type design optimized for engine sealing systems. Its nitrile construction offers resistance to oil, heat, and wear, making it suitable for demanding engine environments. The seal’s 85 mm inside diameter fits shafts precisely, while the 105 mm outside diameter matches housing bores to ensure a secure fit. The 13 mm width provides adequate sealing surface to prevent oil leakage. The counter-clockwise spiral lip design helps maintain consistent contact pressure on the crankshaft, reducing the risk of seal failure over time.

Compatible Vehicles and Applications

This engine crankshaft seal is compatible with a wide range of vehicles, including Audi models such as the 80, 80 Quattro, 90, 90 Quattro, 100, 100 Quattro, 200, and 200 Quattro. It also fits Bentley Continental and Flying Spur, Dodge Charger, Plymouth models, Porsche 911, Boxster, Cayman, Panamera, and Volkswagen vehicles like Beetle, Golf, Jetta, Passat, and Touareg. Volvo models 740, 745, and 760 are also supported. The National 716102 seal is suitable for applications requiring precise sealing of the crankshaft to prevent oil leaks and maintain engine integrity.

Common Issues Addressed by the National 716102 Seal

• Prevents oil leaks from the crankshaft area
• Reduces contamination of engine oil by external debris
• Minimizes wear on crankshaft bearings caused by oil loss
• Maintains engine oil pressure and performance
• Helps avoid costly engine repairs due to seal failure

Installation Notes and Tips

When installing the National 716102 crankshaft seal, ensure the housing bore is clean and free of debris. Lubricate the seal lip lightly with engine oil before installation to reduce initial wear. Use appropriate tools to press the seal evenly into the housing bore without damaging the sealing lip. Verify the seal orientation matches the counter-clockwise spiral lip design for optimal performance. Check shaft surface condition to avoid premature seal wear.

Quality Assurance and Warranty

National engine crankshaft seals are manufactured to meet industry standards for durability and performance. The 716102 part number undergoes rigorous quality control to ensure dimensional accuracy and material integrity. This product is backed by National’s warranty against manufacturing defects, providing confidence in its reliability for engine sealing applications.