SX-CS19 NATIONAL Transmission Shaft Seal International C550

Review NATIONAL Transmission Output Shaft Seal For International for C550 SC 1967–1971

Introducing the National SX-CS19 Transmission Shaft Seal, an essential component for maintaining the efficiency and reliability of your 1967-1971 International MA1200's powertrain system. This transmission shaft seal is meticulously engineered to provide a perfect fit and function in your vehicle.

The SX-CS19 seal is specifically designed for the drivetrain of International MA1200 series trucks, manufactured between 1967 and 1971. This seal is responsible for preventing transmission fluid from leaking out of the shaft, ensuring that the power is effectively transmitted from the transmission to the driveshaft.

The seal is manufactured using high-quality materials, ensuring that it can withstand the rigors of heavy-duty use. It is made from a durable rubber compound that provides excellent sealing capability, resisting the effects of heat, oil, and other environmental stressors. Additionally, the design of the seal includes an integrated lip that provides an extra layer of protection against leaks.

Installation of the SX-CS19 Transmission Shaft Seal is a straightforward process. The seal comes with all necessary hardware for installation, including bolts and nuts. The kit also includes detailed instructions to guide you through the process.

It is important to note that a faulty or worn-out transmission shaft seal can lead to significant transmission fluid loss, which can result in decreased performance, increased wear and tear on other components, and even complete transmission failure. By replacing your old seal with a new National SX-CS19 Transmission Shaft Seal, you can prevent these issues and ensure that your MA1200 continues to operate at its best.

In summary, the National SX-CS19 Transmission Shaft Seal is an essential upgrade for any 1967-1971 International MA1200 owner who wants to maintain the reliability and efficiency of their powertrain system. Its high-quality materials, durable design, and easy installation make it an excellent choice for anyone looking to keep their vehicle in top condition.

Pros and Cons of Buying a National SX-CS19 Transmission Shaft Seal for 1967-1971 International MA1200

The International MA1200, produced between 1967 and 1971, is a classic truck with a distinctive design and robust engine. One essential component that might require replacement over time is the transmission shaft seal. In this context, we will discuss the pros and cons of purchasing a National SX-CS19 transmission shaft seal for this specific model.

1. Designed specifically for 1967-1971 International MA1200: The National SX-CS19 transmission shaft seal is engineered to fit and function optimally for this particular make and model, reducing the likelihood of compatibility issues.

2. High-quality materials: The seal is made from premium materials, ensuring durability and resistance to leaks and wear, thus reducing the need for frequent replacements.

3. Improved performance: A properly functioning transmission shaft seal ensures that transmission fluid remains contained within the transmission system, which in turn leads to better overall performance and fuel efficiency.

4. Reduced maintenance costs: By choosing a reliable and durable seal like the National SX-CS19, you can save money in the long run by minimizing the frequency of seal replacements.

1. Cost: The National SX-CS19 transmission shaft seal may be more expensive than some aftermarket alternatives. However, the investment in a high-quality seal can save money in the long run by reducing the need for frequent replacements.

2. Availability: Depending on your location, it might be more challenging to find a retailer that carries the National SX-CS19 seal compared to other aftermarket brands.

3. Installation: Installing the seal yourself may require some mechanical expertise, and seeking professional help could add to the overall cost.

The National SX-CS19 transmission shaft seal is an excellent investment for those seeking a reliable and durable solution for their 1967-1971 International MA1200. While the initial cost might be higher than some aftermarket alternatives, the long-term benefits in terms of performance, reduced maintenance costs, and peace of mind make it a worthwhile investment.

For those looking to replace their International MA1200's transmission shaft seal, I would recommend considering the National SX-CS19 seal. Its high-quality materials, specific design for the MA1200, and long-term durability make it an excellent choice for ensuring optimal transmission performance and reducing the need for frequent seal replacements.

Details:

specifications differentialsdepo:

• for models: C550, Sc
• for years: 1967–1971
• brand: National
• mpn: Sx-cs19
• placement on vehicle: Transmission Gaskets Sealing Systems
• type: Manual Transmission Output Shaft Seal
• item length: 3.250
• manufacturer warranty: 1 Year
• ipn: C550 37-27
• compatible make: International
• compatible model: Ma1200
• compatible year: 1971 1970 1969 1968 1967
• core charge: Free No Core Charge
• fitment type: Direct Replacement
• bundle description: 1 Pc Genuine National Manual Transmission Output Shaft Seal

offer differentialsdepo:

• prices: $17.53–$22.87
• item condition: New
• options: ship-to-home
• in stock #: 2
• availability: in stock
• sold #: 12
• started: november 11, 2025

returns differentialsdepo:

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

seller differentialsdepo:

• rating: 99.2%
• city: indianapolis, indiana
• # reviews: 591407

general differentialsdepo:

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

payments differentialsdepo:

• other
• credit card: discover
• wallet: apple-pay

shipping differentialsdepo:

• transit: 3-6 days
• type: fixed
• class: standard, expedited
• service: standard, expedited