National 711001 Engine Crankshaft Seal - Front or Rear

Overview of National 711001 Engine Crankshaft Seal

The National 711001 engine crankshaft seal is designed to provide reliable sealing performance for select Ford vehicles. Engineered with a fluoro-elastomer sealing material and a clockwise-spiral lip design, this oil seal helps maintain engine integrity by preventing oil leaks around the crankshaft.

• Compatible with Ford Escape, Fiesta, Fusion, and Transit Connect models
• Inside diameter: 1.811 inches (46.000 mm)
• Outside diameter: 2.228 inches (56.600 mm)
• Thickness/width: 0.276 inches (7.000 mm)
• Clockwise-spiral helix lip design for effective sealing
• Durable fluoro-elastomer material for heat and chemical resistance

Technical Specifications and Design Features

The National 711001 crankshaft seal features precise dimensions to ensure a proper fit within the engine housing bore of 2.220 inches (56.400 mm). The seal’s inside diameter of 1.811 inches (46.000 mm) matches the crankshaft diameter, providing a tight seal to prevent oil leakage. Its 0.276 inch (7.000 mm) thickness offers durability while maintaining flexibility. The clockwise-spiral lip design enhances sealing efficiency by directing oil back into the engine, reducing the risk of contamination and wear.

Application and Compatibility

This engine crankshaft seal is specifically compatible with Ford vehicles including the Escape, Fiesta, Fusion, and Transit Connect. It is designed to replace worn or damaged seals in these models, helping to maintain engine performance and prevent oil leaks that can lead to engine damage.

• Prevents oil leaks around the crankshaft
• Reduces engine contamination from external debris
• Maintains proper oil pressure within the engine
• Helps avoid premature engine wear due to oil loss
• Ensures smooth engine operation by maintaining seal integrity

Installation Notes and Tips

When installing the National 711001 crankshaft seal, ensure the housing bore is clean and free of debris. Use appropriate tools to avoid damaging the seal during installation. Verify the seal orientation matches the clockwise-spiral lip design for optimal sealing performance. Lubricate the seal lip lightly with engine oil before installation to reduce initial wear. Proper installation will help extend the service life of the seal and maintain engine reliability.

Quality Assurance and Warranty

Manufactured by National, a recognized brand in engine sealing systems, the 711001 crankshaft seal is made from high-quality fluoro-elastomer material designed to withstand heat, oil, and chemical exposure typical in engine environments. This part meets industry standards for durability and performance. Please refer to National’s warranty policy for specific coverage details.