National 5066 Engine Crankshaft Seal Kit - Front

Overview of National 5066 Engine Crankshaft Seal Kit

The National 5066 Engine Crankshaft Seal Kit is designed for reliable sealing performance in Ford trucks and vans. Featuring a fluoro-elastomer material and including a Jx1920 wear sleeve, this oil seal kit is engineered to maintain engine integrity and prevent oil leaks.

• Contains Jx1920 wear sleeve for enhanced shaft protection
• Constructed from durable fluoro-elastomer material
• Outside diameter: 3.505 inches (89.03 mm)
• Shaft diameter: 2.377 inches (60.38 mm)
• Seal width: 0.560 inches (14.22 mm)
• Type 48 seal design for precise fit and function

Detailed Product Description

The National 5066 crankshaft seal kit is specifically engineered to provide a secure seal around the crankshaft, preventing oil leakage and contamination. The fluoro-elastomer material offers resistance to heat, oil, and chemicals, making it suitable for demanding engine environments. The included Jx1920 wear sleeve protects the shaft surface, reducing wear and extending seal life. With an outside diameter of 3.505 inches and a shaft diameter of 2.377 inches, this kit fits a range of Ford vehicles requiring a Type 48 seal.

Compatible Ford Models and Applications

This crankshaft seal kit is compatible with various Ford trucks and vans, including:

• Ford E-250 Econoline Club Wagon
• Ford E-350 Club Wagon and Econoline models
• Ford E-350 Super Duty
• Ford Excursion
• Ford F-150, F-250, F-250 HD, F-250 Super Duty
• Ford F-350 and F-350 Super Duty

Common Issues Addressed by National 5066 Seal Kit

• Prevents oil leaks from the crankshaft area
• Reduces engine contamination from external debris
• Minimizes wear on the crankshaft surface with included wear sleeve
• Maintains engine oil pressure and performance
• Helps avoid costly engine repairs due to seal failure

Installation Notes and Tips

Ensure the crankshaft surface is clean and free of debris before installation. Use appropriate tools to press the seal evenly into place without damaging the fluoro-elastomer material. Verify the wear sleeve is properly positioned on the shaft to prevent premature seal wear. Follow vehicle-specific service manual instructions for torque specifications and installation procedures.

Quality Assurance and Warranty

National parts are manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. The 5066 Engine Crankshaft Seal Kit undergoes rigorous quality control to maintain consistent sealing properties. Warranty coverage details should be confirmed with the original product documentation or supplier.