National 3893V Engine Crankshaft Seal - Rear

Reliable Engine Crankshaft Seal for Ford Vehicles

The National 3893V engine crankshaft seal is designed to provide a durable and precise seal for your Ford E-250 Econoline Club Wagon, E-350 Econoline, F-150, F-250, and F-350 models. Engineered with fluoro-elastomer material, this oil seal ensures effective sealing performance under demanding conditions.

• Inside diameter: 3.750 inches (95.250 mm)
• Outside diameter: 4.756 inches (120.800 mm)
• Thickness/width: 0.500 inches (12.700 mm)
• Housing bore diameter: 4.750 inches (120.650 mm)
• Material: Fluoro-elastomer for enhanced chemical and heat resistance
• Series: 3000, Type 45 oil seal

Detailed Product Description

The National 3893V crankshaft seal is manufactured to meet the precise dimensions required for proper fitment in various Ford truck and van models, including the E-250 Econoline Club Wagon and F-350. Its 3.750-inch inside diameter and 4.756-inch outside diameter ensure a secure fit around the crankshaft and housing bore, minimizing oil leakage. The 0.500-inch thickness provides a robust sealing surface, while the fluoro-elastomer construction offers resistance to heat, oil, and other automotive fluids, contributing to long service life in engine environments.

Applications and Problem Solving

• Prevents oil leaks around the crankshaft area
• Maintains engine oil pressure by sealing the crankshaft housing
• Reduces contamination ingress into the engine
• Helps avoid premature wear of engine components due to oil loss
• Compatible with Ford E-250 Econoline Club Wagon, E-350 Econoline, F-150, F-250, and F-350 models

Installation Notes and Tips

Ensure the crankshaft and housing bore are clean and free of debris before installation. Use appropriate tools to press the seal evenly into place without damaging the sealing lip. Verify the seal orientation matches the engine specifications to maintain optimal sealing performance. Avoid using excessive force during installation to prevent deformation of the fluoro-elastomer material.

Quality Assurance and Warranty

National's 3893V crankshaft seal is produced under strict quality control standards to ensure dimensional accuracy and material integrity. The fluoro-elastomer compound is selected for its durability in high-temperature and high-pressure engine environments. While specific warranty details are not provided, National products typically meet or exceed OEM requirements for engine sealing components.