National 228411 Engine Crankshaft Seal - Rear

Overview of National Engine Crankshaft Seal 228411

The National 228411 engine crankshaft seal is designed to provide reliable sealing performance for various Nissan, Infiniti, Mercury, and Suzuki vehicles. Engineered with fluoro-elastomer material and a counter-clockwise spiral lip design, this oil seal ensures effective protection against oil leaks and contamination.

• Inside diameter: 3.307 inches (84.000 mm)
• Outside diameter: 4.099 inches (104.110 mm)
• Thickness/width: 0.335 inches (8.500 mm)
• Material: Durable fluoro-elastomer for heat and chemical resistance
• Helix type: Counter-clockwise spiral lip design for enhanced sealing
• Compatible with housing bore size: 4.094 inches (104.000 mm)

Technical Details and Specifications

The National 228411 crankshaft seal belongs to the 220000 series and is classified as a type 32 oil seal. Its fluoro-elastomer construction offers resistance to high temperatures and automotive fluids, making it suitable for demanding engine environments. The seal’s counter-clockwise spiral lip design helps maintain a tight seal around the crankshaft, reducing the risk of oil leakage and contamination ingress. With precise dimensions including an inside diameter of 3.307 inches and an outside diameter of 4.099 inches, this seal fits housing bores measuring approximately 4.094 inches, ensuring a secure and proper fit.

Compatible Vehicles and Applications

This engine crankshaft seal is compatible with a range of Nissan, Infiniti, Mercury, and Suzuki models, including but not limited to Nissan 200SX, 300ZX, 370Z, Altima, Armada, Frontier, Pathfinder, Rogue, Sentra, Titan, and Xterra. Infiniti models such as EX37, FX37, FX45, FX50, G20, G37, GT-R, J30, M37, M45, M56, Q40, Q45, Q50, Q60, Q70, Q70L, QX4, QX50, QX56, QX60, QX70, and QX80 are also supported. Mercury and Suzuki vehicles within similar engine configurations can utilize this seal for effective crankshaft sealing.

Common Issues Addressed by National 228411 Seal

• Prevents oil leaks from the crankshaft area
• Reduces engine contamination from dirt and debris
• Maintains proper oil pressure by sealing the crankshaft
• Protects engine components from premature wear
• Helps avoid costly engine repairs related to seal failure

Installation Notes and Tips

When installing the National 228411 crankshaft seal, ensure the housing bore and shaft surfaces are clean and free of debris. Use appropriate tools to press the seal evenly into the bore without damaging the sealing lip. Verify the seal orientation matches the counter-clockwise spiral lip design for optimal performance. Lubricate the seal lip lightly with engine oil before installation to reduce initial wear. Follow vehicle-specific service manual instructions for torque specifications and installation procedures.

Quality Assurance and Warranty

National engine crankshaft seals are manufactured to meet industry standards for durability and performance. The fluoro-elastomer material and precision engineering provide reliable sealing under typical engine operating conditions. While specific warranty details may vary, National products generally come with a limited warranty against manufacturing defects. Consult product documentation or authorized sources for exact warranty terms related to part number 228411.