National 5118 Engine Crankshaft Seal - Rear

Overview of National Engine Crankshaft Seal 5118

The National 5118 engine crankshaft seal is designed to provide reliable sealing performance for a range of domestic vehicles. Featuring a nitrile material construction and a split-lip design, this oil seal kit is engineered to maintain engine integrity by preventing oil leaks around the crankshaft.

• Durable nitrile material resists oil and heat degradation
• Split-lip design enhances sealing efficiency and reduces wear
• Compatible with multiple GM and Ford models including Buick, Chevrolet, and Ford trucks
• Part number 5118 ensures precise fitment and quality assurance
• Measures in inches for accurate installation

Detailed Product Description

The National 5118 engine crankshaft seal is an oil seal kit constructed from nitrile, a synthetic rubber known for its resistance to petroleum-based oils and high temperatures. The split-lip design improves the seal’s ability to maintain contact with the crankshaft, reducing the risk of oil leaks and contamination. This part is specifically designed for use in various makes and models such as Buick, Cadillac, Chevrolet, Ford, GMC, Lincoln, Mercury, Oldsmobile, and Pontiac vehicles. It is suitable for models including the Chevrolet C10 Suburban, Ford F-150, Buick LeSabre, and Pontiac Bonneville, among others. The precise engineering of part number 5118 ensures compatibility and reliable performance in these applications.

Applications and Common Issues Addressed

• Prevents oil leaks around the engine crankshaft
• Reduces engine contamination from external debris
• Maintains proper oil pressure and engine lubrication
• Addresses wear and tear from prolonged engine use
• Helps avoid costly engine repairs due to seal failure

Installation Notes and Tips

When installing the National 5118 crankshaft seal, ensure the sealing surface and crankshaft are clean and free of debris. Use appropriate tools to avoid damaging the split-lip seal during installation. Verify the seal is seated evenly to prevent leaks. Consult vehicle-specific service manuals for torque specifications and installation procedures to ensure proper fitment on models such as the Ford F-250 or Chevrolet Caprice.

Quality Assurance and Warranty

National manufactures the 5118 crankshaft seal to meet industry standards for durability and performance. The nitrile material and split-lip design contribute to a long service life under normal operating conditions. While specific warranty details are not provided, National products typically adhere to quality control processes to ensure reliability in automotive applications.