National 482041N Engine Crankshaft Seal - Front

Overview of National Engine Crankshaft Seal 482041N

The National 482041N engine crankshaft seal is designed to provide reliable sealing performance for various Ford, Jaguar, Lincoln, Mazda, and Mercury vehicles. Engineered with precision, this oil seal helps maintain engine integrity by preventing oil leaks around the crankshaft.

• Inside diameter: 1.875 inches (47.630 mm)
• Outside diameter: 2.506 inches (63.650 mm)
• Thickness/width: 0.375 inches (9.530 mm)
• Material: durable polyacrylate for effective sealing
• Redicoat surface treatment for enhanced wear resistance
• Compatible with multiple Ford, Jaguar, Lincoln, Mazda, and Mercury models

Detailed Product Description and Specifications

The National 482041N crankshaft seal belongs to the 480000 series and features a polyacrylate construction that offers excellent resistance to heat, oil, and wear. The seal’s inside diameter of 1.875 inches (47.630 mm) and outside diameter of 2.506 inches (63.650 mm) ensure a precise fit within the housing bore, which measures approximately 2.502 inches (63.550 mm). With a thickness of 0.375 inches (9.530 mm), this oil seal maintains a secure barrier to prevent oil leakage around the crankshaft, helping to protect engine components and maintain optimal performance.

Compatible Vehicles and Applications

This engine crankshaft seal is compatible with a range of vehicles, including Ford models such as the F-150, F-250, Crown Victoria, Mustang, Taurus, and Expedition. It also fits Jaguar models like the X-Type and S-Type, Lincoln vehicles including the Continental and Town Car, as well as Mazda and Mercury models such as the Milan, Mariner, and Cougar. The National 482041N is suitable for use in various engine configurations requiring a 1.875-inch shaft seal.

Common Issues Addressed by the National 482041N Seal

• Prevents oil leaks around the crankshaft area
• Reduces engine contamination from external debris
• Maintains proper oil pressure and lubrication
• Minimizes wear on crankshaft and bearing surfaces
• Helps avoid costly engine repairs due to seal failure

Installation Notes and Tips

When installing the National 482041N crankshaft seal, ensure the housing bore and shaft surfaces are clean and free of debris. Use appropriate tools to press the seal evenly into place without damaging the sealing lip or the Redicoat surface. Verify the seal orientation matches the engine manufacturer’s specifications to maintain proper sealing function. Lubricate the seal lip lightly with clean engine oil before installation to reduce initial wear.

Quality Assurance and Warranty Information

National engine seals are manufactured to meet industry standards for durability and performance. The 482041N part includes a Redicoat treatment that enhances wear resistance and extends service life. While specific warranty terms may vary, National typically offers coverage against manufacturing defects to ensure customer confidence in product reliability.