National 228008 Engine Crankshaft Seal - Rear

National Engine Crankshaft Seal 228008 Overview

The National 228008 engine crankshaft seal is designed to provide reliable sealing performance for various Acura, Honda, Chevrolet, and other vehicle models. Engineered with a fluoro-elastomer material and a counter-clockwise-spiral lip design, this oil seal ensures effective protection against oil leaks and contaminants.

• Inside diameter: 3.150 inches (80 mm)
• Outside diameter: 3.874 inches (98.4 mm)
• Thickness/width: 0.394 inches (10 mm)
• Material: Durable fluoro-elastomer for heat and chemical resistance
• Helix type: Counter-clockwise spiral lip design for enhanced sealing
• Compatible housing bore: 3.858 inches (98 mm)
• Part number: 228008, Series 220000

Technical Details and Material Specifications

This National crankshaft seal (part number 228008) is constructed from fluoro-elastomer, a material known for its resistance to high temperatures, oils, and automotive fluids. The seal features a counter-clockwise spiral lip design that improves sealing efficiency by directing contaminants away from the shaft. With an inside diameter of 3.150 inches and an outside diameter of 3.874 inches, it fits precisely into housings with a bore size of approximately 3.858 inches. The 10 mm thickness provides a robust barrier to prevent oil leakage around the crankshaft.

Compatible Vehicles and Applications

This engine crankshaft seal is compatible with a range of vehicles including Acura models such as the TL, RL, and CL, Honda models like Accord, Civic, CR-V, and S2000, as well as Chevrolet models including Cruze and Sonic. It also fits Buick, Cadillac, Pontiac, and Suzuki vehicles such as the Swift+ and Encore. The part number 228008 is suitable for applications requiring a 32-type oil seal with the specified dimensions.

Common Issues Addressed by the National 228008 Seal

• Prevents oil leaks from the crankshaft area
• Protects engine components from dirt and debris intrusion
• Reduces risk of engine damage due to fluid contamination
• Maintains proper oil pressure and engine performance
• Minimizes wear on crankshaft bearings and seals

Installation Notes and Tips

Ensure the housing bore and shaft surfaces are clean and free of debris before installation. Use appropriate tools to press the seal evenly into the housing bore without damaging the lip or seal body. Verify the seal orientation matches the counter-clockwise spiral lip design for optimal sealing. Lubricate the seal lip lightly with clean engine oil to reduce initial wear during startup. Check for proper fitment with the vehicle’s specifications to avoid premature failure.

Quality Assurance and Warranty

National engine crankshaft seals are manufactured to meet industry standards for durability and performance. The fluoro-elastomer material and precision design contribute to long service life under normal operating conditions. While specific warranty details may vary, National typically offers coverage against manufacturing defects to ensure customer confidence in the 228008 part number.