C535 NATIONAL Transmission Shaft Seal Mu Plymouth Roadrunner

Review NATIONAL 57-55 Transmission Output Shaft Seal For Plymouth Mu for PLYMOUTH ROADRUNNER 1968–1975

The National C535 transmission shaft seal is an essential component for the Plymouth Roadrunner and Mu cars manufactured between 1968 and 1975. This part is specifically designed to seal the transmission shaft and prevent the leakage of automatic transmission fluid.

The C535 transmission shaft seal is made from a high-quality, durable material that ensures a perfect seal against the shaft and the casing. The seal features an O-ring design, which allows it to flex and adapt to the slight movements of the transmission shaft. This flexibility ensures a long-lasting and effective seal, even under heavy loads and extreme temperatures.

The outer diameter of the seal measures 57mm, while the inner diameter is 55mm. The length of the seal varies depending on the specific application, so it is important to check the measurements of your vehicle's transmission shaft before purchasing this part.

This transmission shaft seal is easy to install and can be done as a DIY project for those with some mechanical experience. The seal comes with detailed instructions, making the installation process straightforward and hassle-free. However, if you prefer, you can also have it installed by a professional mechanic.

The National C535 transmission shaft seal is an important upgrade for any Plymouth Roadrunner or Mu owner experiencing transmission fluid leaks. By preventing the loss of transmission fluid, this seal helps improve the overall performance and longevity of the transmission system. It is also an economical solution compared to a complete transmission rebuild or replacement.

In summary, the National C535 transmission shaft seal is a high-quality, durable part that effectively seals the transmission shaft and prevents leaks in Plymouth Roadrunner and Mu cars manufactured between 1968 and 1975. It is easy to install and is an economical solution for those looking to improve the performance and longevity of their transmission system.

Pros and Cons of Buying a National C535 Transmission Shaft Seal for a 1968-1975 Plymouth Roadrunner/Muci (No Emojis)

The National C535 transmission shaft seal is a commonly used replacement part for the automatic transmissions found in 1968-1975 Plymouth Roadrunners and MuCi cars. Like any other automotive part, it comes with its advantages and disadvantages. In this analysis, we will discuss the key pros and cons of purchasing this seal.

1. OE-quality: The National C535 transmission shaft seal is an original equipment (OE) replacement part, meaning it is manufactured to the same specifications as the original part made by the vehicle manufacturer.

2. Leak Prevention: A faulty transmission shaft seal can cause significant transmission fluid leaks, which can lead to costly repairs and potential engine damage. Replacing the seal with a new one, such as the National C535, can help prevent these issues.

3. Availability: The National C535 transmission shaft seal is widely available from various automotive parts retailers, making it an easily accessible option for car owners.

4. Cost-effective: Compared to the cost of a new transmission or even a complete rebuild, the National C535 transmission shaft seal is a cost-effective solution for addressing transmission leaks.

1. Installation Complexity: Installing a transmission shaft seal can be a challenging task, especially for inexperienced DIYers. It may require the removal of various components, including the transmission pan, to access the seal.

2. Potential for Additional Damage: If not installed correctly, the new seal may not provide a proper seal, leading to continued leaks and potential damage to other components. This can result in additional labor and parts costs.

3. Cost of Labor: While the cost of the National C535 transmission shaft seal itself is relatively affordable, the labor cost for having it installed at a professional shop can add up significantly.

In conclusion, the National C535 transmission shaft seal for a 1968-1975 Plymouth Roadrunner/MuCi offers several advantages, including OE-quality, leak prevention, availability, and cost-effectiveness. However, it also comes with some disadvantages, such as installation complexity, potential for additional damage, and labor costs. Ultimately, the decision to purchase this seal depends on your personal skills, resources, and priorities as a car owner.

If you are comfortable with performing the installation yourself, the National C535 transmission shaft seal can be a cost-effective solution for addressing transmission leaks in your 1968-1975 Plymouth Roadrunner/MuCi. However, if you lack experience or confidence in your abilities, it may be worth considering having a professional install the seal to minimize the risk of additional damage and ensure a proper installation.

Details:

National transmission output shaft seal for 1968-1975 Plymouth Roadrunner mu: status: in stock.

specifications differentialsdepo:

• for models: Roadrunner
• for makes: Plymouth
• for years: 1968–1975
• brand: National
• mpn: 1975
• placement on vehicle: Transmission Gaskets Sealing Systems
• type: Manual Transmission Output Shaft Seal
• item length: 2.750
• manufacturer warranty: 1 Year
• ipn: C535 57-55
• compatible year: 1975 1974 1973 1972 1971 1970 1969 1968
• core charge: Free No Core Charge
• fitment type: Direct Replacement
• bundle description: 1 Pc Genuine National Manual Transmission Output Shaft Seal

shipping differentialsdepo:

• transit: 2-6 days
• service: standard, expedited
• class: standard, expedited
• type: fixed

offer differentialsdepo:

• sold #: 17
• in stock #: 5
• availability: in stock
• prices: $18.78–$36.02
• item condition: New
• started: september 24, 2025
• options: ship-to-home

payments differentialsdepo:

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

general differentialsdepo:

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

returns differentialsdepo:

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

seller differentialsdepo:

• city: indianapolis, indiana
• rating: 98.9%
• # reviews: 572846