NATIONAL C559 Shaft Seal Kit Manual 81-46

( Brand: National ), ( Manufacturer Part Number: 1965 ), ( Type: Manual Transmission Output Shaft Seal Kit ), ( Manufacturer Warranty: 1 Year ), ( Ipn: C559 81-46 ), ( Item Length: 2.750 ), ( Placement On Vehicle: Transmission Gaskets Sealing Systems ), ( Compatible Model: 2500 Series ), ( Compatible Year: 1965 1964 ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine National Manual Transmission Output Shaft Seal Kit )

Review NATIONAL 81-46 Output Shaft Seal Kit For Gmc Series Manual Co fits 2500 1964–1965

The National C559 81-46 Shaft Seal Kit is specifically designed for the 1964-1965 GMC 2500 trucks with manual transmission. This essential automotive component is engineered to provide a reliable seal between the transmission output shaft and the differential housing, preventing the leakage of transmission fluid and ensuring optimal performance.

The kit includes all necessary parts for a complete shaft seal replacement. The heart of this system is the C559 seal, which is a high-quality, reinforced, and labyrinth-type seal. This design provides an effective barrier against the transmission fluid while allowing the shaft to rotate freely. The seal is engineered with a heavy-duty rubber material that is resistant to wear and tear, ensuring long-lasting performance.

The kit also includes the 81-46 gasket, which is precision-machined to ensure a perfect fit and seal. The gasket is made of a high-temperature material to withstand the extreme heat generated by the transmission.

Additionally, the kit comes with all necessary hardware, including new bolts and nuts, to securely fasten the new seal and gasket in place. Each hardware piece is zinc-coated to protect against rust and corrosion. The kit also includes a new sealing ring and a new clutch housing bolt.

Installing the National C559 81-46 Shaft Seal Kit is a straightforward process that can be completed by an experienced DIY mechanic or a professional technician. The kit includes clear and detailed instructions to guide you through the process.

In summary, the National C559 81-46 Shaft Seal Kit is a must-have for any 1964-1965 GMC 2500 truck owner with a manual transmission seeking to prevent transmission fluid leaks, improve performance, and extend the life of their vehicle's drivetrain. With its high-quality, heavy-duty seal and gasket, along with all necessary hardware, this kit offers a comprehensive solution for shaft seal replacement.

Pros and Cons of Buying a National C559 81-46 Shaft Seal Kit for 1964-1965 GMC 2500 (Manual)

a. Genuine Replacement: This kit is a factory-recommended replacement part for the shaft seal in your 1964-1965 GMC 2500 with a manual transmission.

b. Complete Kit: The National C559 81-46 seal kit comes with all necessary seals and hardware, ensuring a comprehensive repair solution.

c. High-Quality Material: The seals are made of high-quality materials that can withstand the rigors of heavy-duty use, providing reliable performance.

a. Expensive: Compared to aftermarket alternatives, the National C559 81-46 seal kit may be more expensive.

b. Limited Availability: This specific seal kit might not be readily available at local auto parts stores and may need to be ordered online or from a dealership.

The National C559 81-46 shaft seal kit for 1964-1965 GMC 2500 (manual) is a reliable and complete repair solution for your vehicle. Its high-quality materials ensure long-lasting performance, but its high cost and limited availability may be a deterrent for some. Ultimately, if you prioritize genuine factory replacement parts and superior performance, this seal kit would be a worthwhile investment.

If you're looking to replace the shaft seals in your 1964-1965 GMC 2500 with a manual transmission and want the peace of mind that comes with using a genuine factory replacement part, the National C559 81-46 seal kit is an excellent choice. If cost is a concern, consider exploring aftermarket alternatives, but remember that their performance and longevity may not be as consistent as the National C559 81-46 seal kit.

Details:

National Output Shaft Seal Kit for 1964-1965 GMC 2500 Series Manual co: Status: In Stock.

specifications manutransmission:

• for makes: Gmc
• for years: 1964-1965
• brand: National
• mpn: 1965
• type: Manual Transmission Output Shaft Seal Kit
• manufacturer warranty: 1 Year
• ipn: C559 81-46
• item length: 2.750
• placement on vehicle: Transmission Gaskets Sealing Systems
• compatible model: 2500 Series
• compatible year: 1965 1964
• core charge: Free No Core Charge
• fitment type: Direct Replacement
• bundle description: 1 Pc Genuine National Manual Transmission Output Shaft Seal Kit

offer manutransmission:

• availability: In Stock
• sold: 0
• options: Ship-to-home
• started: August 23, 2025
• quantity: 7

payments manutransmission:

• wallet: Google-pay
• credit card: Discover
• other

general manutransmission:

• condition: New
• Car Truck Parts Accessories > Transmission Drivetrain > Manual Transmission Parts

returns manutransmission:

• time: 30 Days
• policy: Returns Accepted
• paid by: Seller

seller manutransmission:

• rating: 98.7%
• # reviews: 563518
• city: Indianapolis, Indiana

shipping manutransmission:

• transit: 4-7 Days
• service: Standard, Expedited
• class: Standard, Expedited
• cost: $0.00
• type: Fixed

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