National 341022 Transfer Case Oil Pump Housing Seal

Overview of National Transfer Case Oil Pump Housing Seal 341022

The National Transfer Case Oil Pump Housing Seal 341022 is designed to provide reliable sealing performance for transfer cases in a variety of trucks and SUVs. Engineered with nitrile material, this oil seal ensures durability and resistance to wear, making it suitable for vehicles like Chevrolet Silverado 1500, Ford F-250 Super Duty, and Jeep Grand Cherokee.

• Inside diameter: 2.250 inches (57.150 mm)
• Outside diameter: 2.636 inches (66.950 mm)
• Thickness/width: 0.187 inches (4.750 mm)
• Sealing material: Nitrile for enhanced oil resistance
• Compatible with housing bore size: 2.625 inches (66.680 mm)

Detailed Product Description and Specifications

The National 341022 transfer case oil pump housing seal is manufactured from nitrile, a synthetic rubber known for its excellent resistance to petroleum-based oils and fluids. This seal features an inside diameter of 2.250 inches and an outside diameter of 2.636 inches, with a thickness of 0.187 inches, making it a precise fit for transfer case oil pump housings requiring these dimensions. The seal’s design helps maintain proper lubrication by preventing oil leaks and contamination within the transfer case assembly.

This part is part of National’s 340000 series, which focuses on gaskets and sealing systems engineered for transfer case applications. The seal’s robust nitrile construction supports long-term durability under the demanding conditions of off-road and heavy-duty use.

Compatible Vehicles and Applications

This transfer case oil pump housing seal 341022 is compatible with a wide range of makes and models, including but not limited to:

• Chevrolet Silverado 1500, 2500, 3500, Avalanche, Blazer, Suburban
• Ford F-100, F-150, F-250 Super Duty, F-350 Super Duty, Excursion
• Jeep Grand Cherokee, Cherokee, Wrangler, Wrangler JK
• Ram 1500, 2500, 3500, Dakota, Durango
• GMC Sierra 1500, Sierra 1500 Classic, Yukon, Yukon XL

Common Issues Addressed by This Seal

• Prevents oil leaks from the transfer case oil pump housing
• Reduces contamination ingress that can damage transfer case components
• Maintains proper lubrication for transfer case oil pump operation
• Helps avoid premature wear of transfer case internal parts
• Ensures consistent transfer case performance under heavy load conditions

Installation Notes and Tips

• Ensure the transfer case oil pump housing bore is clean and free of debris before installation
• Use appropriate tools to press the seal evenly into the housing bore to avoid damage
• Verify the seal’s orientation matches the original part to maintain proper sealing
• Inspect the shaft surface for wear or damage before installing the seal
• Apply a light coating of compatible lubricant on the seal lip to ease installation and prevent initial dry running

Quality Assurance and Warranty

National transfer case seals are manufactured to meet OEM specifications for fit, form, and function. The 341022 oil pump housing seal undergoes rigorous quality control to ensure consistent sealing performance and durability. While specific warranty terms may vary, National typically offers coverage against manufacturing defects to provide confidence in the product’s reliability.