National 710473 Engine Crankshaft Seal - Rear

Overview of National 710473 Engine Crankshaft Seal

The National 710473 engine crankshaft seal is designed to provide reliable sealing performance for Dodge Ram 2500 and Ram 3500 models. Constructed with durable PTFE material, this oil seal ensures effective containment of engine oil, helping maintain engine integrity and prevent leaks.

• Inside diameter: 128.000 mm (5.039 inches)
• Outside diameter: 150.500 mm (5.925 inches)
• Thickness/width: 21.600 mm (0.850 inches)
• Material: PTFE for enhanced wear resistance and sealing
• Compatible with Dodge Ram 2500 and Ram 3500 models
• Part number: 710473, series 710400

Detailed Product Description

The National 710473 crankshaft seal is engineered to fit precisely within the housing bore measuring approximately 150.370 mm (5.920 inches). Its PTFE construction offers excellent resistance to heat, chemicals, and wear, making it suitable for demanding engine environments. The seal’s dimensions, including a 128 mm (5.039 inch) inside diameter and 150.5 mm (5.925 inch) outside diameter, ensure a tight fit around the crankshaft to prevent oil leakage. With a thickness of 21.6 mm (0.850 inches), this oil seal maintains durability and flexibility under engine operating conditions.

Applications and Problem Solving

• Prevents oil leaks around the crankshaft in Dodge Ram 2500 and Ram 3500 engines
• Reduces contamination of engine oil by sealing out dirt and debris
• Helps maintain proper oil pressure and lubrication within the engine
• Addresses wear-related seal failures due to heat and friction
• Supports engine longevity by maintaining effective sealing

Installation Notes and Tips

Ensure the crankshaft and housing bore are clean and free of debris before installation. Verify the seal orientation matches the engine specifications to prevent premature failure. Use appropriate tools to press the seal evenly into the housing bore without damaging the PTFE material. Avoid excessive force or misalignment during installation to maintain seal integrity.

Quality Assurance and Warranty

National engine crankshaft seals are manufactured to meet industry standards for durability and performance. The 710473 part number belongs to the 710400 series, known for consistent quality in sealing solutions. While specific warranty details are not provided, National products typically adhere to OEM quality requirements to ensure reliable service life in Dodge Ram 2500 and Ram 3500 applications.