SX-NW0Z NATIONAL Transmission Shaft Seal Zn C175 Plymouth

Review NATIONAL Transmission Output Shaft Seal For Plymouth Zn for PLYMOUTH ROADRUNNER C175 1968–1975

National SX-NW0Z Transmission Shaft Seal for 1968-1975 Plymouth RoadRunner (ZN)

The National SX-NW0Z Transmission Shaft Seal is an essential component designed specifically for the 1968-1975 Plymouth RoadRunner (ZN) models. This seal plays a crucial role in maintaining the transmission system's integrity and efficiency by preventing the transmission fluid from leaking out.

This transmission shaft seal is meticulously engineered using high-quality materials that ensure a perfect fit and long-lasting performance. The seal's design incorporates a precision-molded, reinforced rubber lip that seals tightly against the shaft to prevent any fluid loss. The outer edge of the seal is engineered with a robust, heat-resistant material to withstand the extreme temperatures generated within the transmission system.

The SX-NW0Z transmission shaft seal is easy to install and replace, making it an ideal choice for both professional mechanics and DIY enthusiasts. The seal comes complete with all necessary hardware, ensuring a hassle-free installation process.

By using the National SX-NW0Z Transmission Shaft Seal, vehicle owners can restore their RoadRunner's transmission system to its optimal operating condition. This seal is an investment in the longevity and performance of the vehicle, providing peace of mind and preventing costly repairs that might arise due to transmission fluid leaks.

In summary, the National SX-NW0Z Transmission Shaft Seal is a high-performance, durable, and reliable solution for fixing transmission leaks in 1968-1975 Plymouth RoadRunner (ZN) models. Its precise fit, superior materials, and easy installation make it an essential component for any RoadRunner enthusiast looking to preserve their vehicle's performance and longevity.

The National SX-NW0Z transmission shaft seal is a critical component for the 1968-1975 Plymouth Roadrunner ZN, ensuring the proper sealing of the transmission shaft to prevent leaks and maintain the performance and efficiency of the vehicle's powertrain system. Here are some potential pros and cons of buying this transmission shaft seal:

1. OEM (Original Equipment Manufacturer) replacement: This seal is manufactured by the same company that originally produced it for the vehicle, ensuring a precise fit and compatibility with the transmission system.

2. High-quality materials: The SX-NW0Z seal is made from high-quality materials, such as rubber and steel, designed to withstand the rigors of regular driving and provide a long-lasting solution for transmission leaks.

3. Improved sealing performance: The new seal can help prevent transmission fluid leaks, which can lead to various issues, such as reduced engine performance, overheating, and even transmission damage if left unchecked.

4. Easy installation: The seal is relatively easy to install, making it a viable DIY project for those who are comfortable working on their own vehicles or have access to a professional mechanic.

1. Cost: The National SX-NW0Z transmission shaft seal may be more expensive than aftermarket alternatives, which could be a deterrent for some buyers.

2. Availability: Depending on the location and availability, it may take some time to source and receive the seal, which could result in additional waiting time for those in need of an immediate solution for their transmission leak.

3. Potential for additional repairs: In some cases, a transmission shaft seal leak could be a symptom of a larger issue within the transmission system. Installing a new seal may reveal the need for additional repairs, which could add to the overall cost and time investment.

The National SX-NW0Z transmission shaft seal is a reliable and effective solution for addressing transmission leaks in 1968-1975 Plymouth Roadrunner ZNs. While it may come with a higher cost compared to aftermarket alternatives, the benefits of using an OEM replacement part, high-quality materials, and improved sealing performance make it a worthwhile investment for those seeking a long-term solution for their vehicle.

If you are experiencing transmission fluid leaks in your 1968-1975 Plymouth Roadrunner ZN, we recommend considering the National SX-NW0Z transmission shaft seal as a solution for addressing the issue. This part's OEM quality, high-quality materials, and improved sealing performance make it an ideal choice for ensuring the proper functioning of your vehicle's powertrain system. While the cost may be higher than some aftermarket alternatives, the long-term benefits and peace of mind that come with using an OEM replacement part make it a worthwhile investment.

Details:

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

specifications differentialsdepo:

• for models: C175, Roadrunner
• for makes: Plymouth
• for years: 1968–1975
• brand: National
• mpn: Sx-nw0z
• placement on vehicle: Transmission Gaskets Sealing Systems
• type: Manual Transmission Output Shaft Seal
• item length: 2.750
• manufacturer warranty: 1 Year
• ipn: C175 67-25
• compatible model: Roadrunner
• 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

payments differentialsdepo:

• other
• wallet: paypal
• credit card: diners-club

returns differentialsdepo:

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

offer differentialsdepo:

• price: $16.82
• item condition: New
• sold #: 11
• started: december 17, 2025
• in stock #: 1
• options: ship-to-home
• availability: in stock

general differentialsdepo:

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

seller differentialsdepo:

• rating: 99.3%
• city: indianapolis, indiana
• # reviews: 604195

shipping differentialsdepo:

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