SX-7XT2 NATIONAL Transmission Shaft Seal International R100

Review NATIONAL Transmission Output Shaft Seal For International for R100 KR 1953–1955

Introducing the National SX-7XT2 Transmission Shaft Seal, specifically designed for International Harvester R100 KB and TR trucks manufactured between 1953 and 1955. This premium seal is engineered to provide superior performance and durability for your vehicle's transmission system.

The National SX-7XT2 Transmission Shaft Seal is made with a high-quality, reinforced rubber compound that offers excellent resistance to oil, grease, and other contaminants. Its unique design features an outer lip that is specifically contoured to closely fit the transmission shaft, ensuring a tight seal and preventing leaks. The inner diameter is precision machined to perfectly match the shaft's dimensions, providing a secure and reliable fit.

This seal also features a double-lip design, which creates an additional barrier against leaks and helps to maintain the proper lubrication levels in the transmission. The outer lip acts as a primary seal, while the inner lip forms a secondary seal, providing an extra layer of protection against any potential leaks.

The National SX-7XT2 Transmission Shaft Seal is easy to install, requiring no special tools or extensive mechanical knowledge. Simply remove the old seal, clean the area, and install the new seal in its place. The included installation instructions provide clear, step-by-step guidance to ensure a successful installation.

By choosing the National SX-7XT2 Transmission Shaft Seal, you can enjoy the peace of mind that comes with knowing your vehicle's transmission system is properly sealed and protected. This seal is the perfect solution for preventing leaks and ensuring the longevity of your International Harvester R100 KB or TR truck's transmission system.

In summary, the National SX-7XT2 Transmission Shaft Seal is a high-performance, durable solution for sealing the transmission shaft on 1953-1955 International Harvester R100 KB and TR trucks. Its unique design features a high-quality rubber compound, contoured outer lip, double-lip design, and easy installation process, making it the ideal choice for maintaining the reliability and longevity of your vehicle's transmission system.

Pros and Cons of Buying a National SX-7XT2 Transmission Shaft Seal for 1953-1955 International R100 KB Trucks

The National SX-7XT2 transmission shaft seal is a replacement part designed for the International Harvester R100 KB trucks manufactured between 1953 and 1955. Like any other purchase, there are pros and cons to consider before deciding to buy this part. In this article, we will discuss the advantages and disadvantages of buying a National SX-7XT2 transmission shaft seal.

1. OEM Quality: The National SX-7XT2 transmission shaft seal is an Original Equipment Manufacturer (OEM) part. This means it is designed and manufactured to meet the same specifications as the seal originally installed in the truck.

2. Improved Sealing: The National SX-7XT2 transmission shaft seal provides better sealing than some aftermarket alternatives. Proper sealing helps prevent transmission fluid leaks and potential engine damage.

3. Durability: The National SX-7XT2 transmission shaft seal is designed to last longer than some aftermarket seals. This can save you money in the long run, as you won't have to replace the seal as frequently.

4. Peace of Mind: Installing an OEM part like the National SX-7XT2 transmission shaft seal can provide peace of mind, knowing that you are using a genuine part from the vehicle's original manufacturer.

1. Cost: The National SX-7XT2 transmission shaft seal may be more expensive than some aftermarket alternatives. However, the added cost may be justified by the improved sealing and durability.

2. Availability: Depending on your location and the availability of parts at your local dealer, you may need to order the National SX-7XT2 transmission shaft seal online or through a specialty parts supplier.

3. Installation Complexity: Installing the National SX-7XT2 transmission shaft seal may require some mechanical expertise. If you are not confident in your ability to install the part yourself, it may be best to have it installed by a professional.

When considering the purchase of a National SX-7XT2 transmission shaft seal for your 1953-1955 International R100 KB truck, it's essential to weigh the pros and cons. The OEM quality, improved sealing, and durability are advantages that can provide peace of mind and long-term savings. However, the potential cost and installation complexity are disadvantages that should be considered. Ultimately, the decision to buy the National SX-7XT2 transmission shaft seal depends on your budget, mechanical expertise, and priorities for your truck. If you value the benefits of an OEM part and are willing to invest in the upfront cost and installation, then the National SX-7XT2 transmission shaft seal may be a wise investment for your vehicle.

If you are in the market for a transmission shaft seal for your 1953-1955 International R100 KB truck and prioritize the benefits of an OEM part, we recommend purchasing the National SX-7XT2 transmission shaft seal. While it may require a larger upfront investment and some installation expertise, the improved sealing, durability, and peace of mind it provides can be worth the cost. If you are on a tighter budget or prefer a more affordable alternative, consider researching aftermarket transmission shaft seal options to find one that meets your needs and budget.

Details:

specifications differentialsdepo:

• for models: R100, Kr
• for years: 1953–1955
• brand: National
• mpn: Sx-7xt2
• placement on vehicle: Transmission Gaskets Sealing Systems
• type: Manual Transmission Output Shaft Seal
• item length: 3.250
• manufacturer warranty: 1 Year
• ipn: C331 10-31
• compatible make: International
• compatible year: 1955 1954 1953
• core charge: Free No Core Charge
• fitment type: Direct Replacement
• bundle description: 1 Pc Genuine National Manual Transmission Output Shaft Seal

shipping differentialsdepo:

• class: standard, expedited
• transit: 2-4 days
• service: standard, expedited
• type: fixed

offer differentialsdepo:

• started: july 28, 2025
• availability: in stock
• in stock #: 1
• sold #: 16
• price: $18.35
• item condition: New
• options: ship-to-home

seller differentialsdepo:

• city: indianapolis, indiana
• rating: 98.8%
• # reviews: 561383

returns differentialsdepo:

• time: 30 days
• policy: returns accepted
• paid by: seller

payments differentialsdepo:

• other
• wallet: google-pay
• credit card: visa

general differentialsdepo:

• category: Auto Parts > Transmission Drivetrain > Differentials, Assemblies > Additional