National 711133 Engine Crankshaft Seal - Rear

Overview of National 711133 Engine Crankshaft Seal

The National 711133 engine crankshaft seal is designed to provide reliable sealing performance for select Audi and Volkswagen vehicles. Engineered with a counter-clockwise-spiral lip design, this oil seal helps maintain engine integrity by preventing oil leaks around the crankshaft.

• Counter-clockwise-spiral lip design for effective sealing
• Constructed from durable PTFE material for enhanced wear resistance
• Housing bore diameter of 105.000 mm (4.134 inches)
• Outside diameter of 105.300 mm (4.146 inches)
• Shaft diameter of 85.000 mm (3.346 inches)
• Seal width of 14.3 mm (0.563 inches)
• Part of the National 711100 series

Detailed Product Description

The National 711133 crankshaft seal is an oil seal and housing unit designed to fit specific engine configurations in Audi and Volkswagen models. Its PTFE (polytetrafluoroethylene) construction offers excellent chemical resistance and low friction, which contributes to longer service life and reliable sealing under various operating conditions. The seal features a helix type counter-clockwise-spiral lip design that enhances its ability to retain oil and prevent contaminants from entering the engine. With precise dimensions including a 105 mm housing bore and an 85 mm shaft diameter, this seal is engineered to meet OEM specifications for models such as the Audi A4, A4 Quattro, A6, A6 Quattro, Cabriolet, and Volkswagen Golf, Jetta, Passat, and EuroVan.

Compatible Vehicles and Applications

This National 711133 engine crankshaft seal is compatible with the following makes and models:

• Audi A4 and A4 Quattro
• Audi A6 and A6 Quattro
• Audi Cabriolet
• Volkswagen EuroVan
• Volkswagen Golf
• Volkswagen Jetta
• Volkswagen Passat

It is designed to address common issues such as oil leaks around the crankshaft, contamination ingress, and premature seal wear.

• Prevents oil leaks from the crankshaft area
• Reduces risk of engine contamination
• Minimizes wear on the crankshaft seal lip
• Maintains engine oil pressure and cleanliness
• Helps avoid costly engine repairs due to seal failure

Installation Notes and Tips

When installing the National 711133 crankshaft seal, ensure the housing bore and shaft surfaces are clean and free of debris. Proper alignment during installation is critical to avoid seal damage. Use appropriate tools to press the seal evenly into the housing bore without distortion. Verify the helix lip orientation matches the counter-clockwise spiral design for optimal sealing performance.

Quality Assurance and Warranty

National engine seals are manufactured to meet industry standards for durability and performance. The 711133 part number is part of the 711100 series, known for consistent quality in sealing solutions. While specific warranty details are not provided, National products typically adhere to OEM quality requirements and undergo rigorous testing to ensure reliability in automotive applications.