National 4131 Wheel Seal - Front Inner

National 4131 Wheel Seal for Jeep CJ5, CJ7, and Scrambler

The National 4131 wheel seal is engineered to provide reliable sealing performance for Jeep CJ5, CJ7, and Scrambler driveline applications. Designed with precision dimensions and durable nitrile material, this oil seal helps maintain proper lubrication and prevent contamination in your vehicle's axle assembly.

• Inside diameter: 2.312 inches (58.720 mm)
• Outside diameter: 3.004 inches (76.300 mm), flanged outer diameter
• Width: 0.375 inches (9.530 mm)
• Material: Nitrile for resistance to oil and wear
• Redicoat surface treatment for enhanced sealing
• Housing bore size: 3.000 inches (76.200 mm)
• Part type: 287 series oil seal, part number 4131

Detailed Product Description

The National 4131 wheel seal is part of the 4000 series and is specifically designed to fit the axle shafts of Jeep CJ5, CJ7, and Scrambler models. Constructed from nitrile, this seal offers excellent resistance to petroleum-based oils and greases, ensuring long-lasting performance in demanding driveline environments. The flanged outside diameter provides a secure fit within the housing bore, which measures 3.000 inches, while the inside diameter of 2.312 inches matches the shaft size precisely. The Redicoat treatment enhances the seal’s ability to maintain a tight barrier against contaminants and fluid leaks.

Applications and Problem Solving

• Prevents oil leaks from axle assemblies in Jeep CJ5, CJ7, and Scrambler vehicles
• Protects driveline components from dirt, dust, and moisture intrusion
• Maintains proper lubrication to reduce wear on axle shafts and bearings
• Helps avoid costly repairs caused by seal failure or contamination
• Ensures consistent performance under normal driving conditions

Installation Notes and Tips

• Verify compatibility with Jeep CJ5, CJ7, and Scrambler axle shafts before installation
• Clean the housing bore and shaft thoroughly to remove debris and old sealant
• Lubricate the seal lip with clean oil prior to installation to prevent dry running
• Press the seal evenly into the housing bore to avoid distortion or damage
• Inspect the seal after installation for proper seating and alignment

Quality Assurance and Warranty

National wheel seals, including part number 4131, are manufactured to meet industry standards for durability and performance. The use of nitrile material and Redicoat treatment ensures resistance to oil degradation and environmental factors. While specific warranty terms may vary, National products typically come with a limited warranty against manufacturing defects, providing confidence in the product’s reliability for Jeep CJ5, CJ7, and Scrambler driveline maintenance.