SX-7JXB NATIONAL Transmission Shaft Seal Manual Jx C3500 Gmc

Review NATIONAL Transmission Input Shaft Seal For Gmc Manual Jx for GMC C3500 1979–1986

Introducing the National SX-7JxB Transmission Shaft Seal, an essential component designed specifically for 1979-1986 GMC C3500 trucks with manual JX transmissions. This seal is engineered to provide an effective solution against transmission fluid leakage, ensuring a reliable and efficient performance of your vehicle.

Manufactured by National Sealing, a trusted name in the automotive industry, this SX-7JxB Transmission Shaft Seal is made of high-quality materials that offer superior sealing capability and durability. The seal features a unique design that conforms to the contours of your transmission shaft, creating a tight and leak-free seal. It is also compatible with various transmission fluids, allowing you to maintain the recommended lubrication for your vehicle.

The National SX-7JxB Transmission Shaft Seal is easy to install, making it a popular choice among DIY enthusiasts and professional mechanics alike. It comes in a pack of one, ensuring you have a perfect fit for your specific application. When replacing the old seal, simply remove the old one, clean the area, and apply a suitable sealant before installing the new seal.

This seal is crucial for maintaining the performance and longevity of your GMC C3500's manual JX transmission. A leaking shaft seal can lead to costly repairs and potential damage to other components. By investing in a high-quality replacement like the National SX-7JxB Transmission Shaft Seal, you can prevent these issues and enjoy a worry-free driving experience.

In summary, the National SX-7JxB Transmission Shaft Seal is a vital upgrade for your 1979-1986 GMC C3500 with a manual JX transmission. It offers superior sealing capability, durability, and ease of installation, ensuring your transmission stays leak-free and performs at its best.

Pros and Cons of Buying a National SX-7JXB Transmission Shaft Seal for 1979-1986 GMC C3500 Manual JX

The National SX-7JXB transmission shaft seal is a critical component for the manual transmission system in 1979-1986 GMC C3500 trucks. This part is essential for preventing transmission fluid from leaking out and ensuring the proper function of the transmission. In this article, we will discuss the pros and cons of purchasing this seal to help you make an informed decision.

1. OEM Quality: The National SX-7JXB transmission shaft seal is an original equipment manufacturer (OEM) replacement part. This means it is designed to meet or exceed the specifications of the original equipment that came with your truck.

2. Durability: This seal is made from high-quality materials that are resistant to wear and tear. It is designed to withstand the harsh conditions of heavy-duty use, making it a reliable choice for long-term use.

3. Leak Prevention: A faulty transmission shaft seal can cause significant fluid leaks, leading to expensive repairs and downtime. By replacing the seal with a new OEM part like the National SX-7JXB, you can prevent leaks and save yourself the cost and inconvenience of more extensive repairs.

1. Cost: While the National SX-7JXB transmission shaft seal is a high-quality part, it can be more expensive than aftermarket alternatives. However, the cost may be worth it for the peace of mind and reliability that comes with an OEM part.

2. Installation: Installing the National SX-7JXB transmission shaft seal can be a complex and time-consuming process. It may require specialized tools and expertise, which can add to the overall cost and inconvenience of the repair.

In conclusion, the National SX-7JXB transmission shaft seal is a high-quality OEM replacement part that offers durability, reliability, and leak prevention benefits. However, it comes with a higher cost than aftermarket alternatives and may require specialized installation. Ultimately, the decision to purchase this seal depends on your budget, installation capabilities, and priority for OEM quality and reliability.

If you value OEM quality and reliability, and you have the budget and installation capabilities, then the National SX-7JXB transmission shaft seal is an excellent choice for your 1979-1986 GMC C3500 manual JX. It may be more expensive than aftermarket alternatives, but the peace of mind and long-term performance benefits make it a worthwhile investment. However, if you are on a tight budget or prefer a more cost-effective solution, an aftermarket seal may be a better option for you. Regardless of your choice, be sure to follow proper installation procedures to ensure the longevity and effectiveness of the seal.

Details:

National transmission input shaft seal for 1979 1986 Gmc C3500 manual jx: status: in stock.

specifications differentialsdepo:

• for models: C3500
• for makes: Gmc
• for years: 1979–1986
• brand: National
• mpn: Sx-7jxb
• placement on vehicle: Transmission Gaskets Sealing Systems
• type: Manual Transmission Input Shaft Seal
• item length: 2.000
• manufacturer warranty: 1 Year
• ipn: C783 39-15
• compatible year: 1986 1985 1984 1983 1982 1981 1980 1979
• core charge: Free No Core Charge
• fitment type: Direct Replacement
• bundle description: 1 Pc Genuine National Manual Transmission Input Shaft Seal

shipping differentialsdepo:

• type: fixed
• class: standard, expedited
• transit: 3-5 days
• service: standard, expedited

payments differentialsdepo:

• credit card: discover
• other
• wallet: paypal

returns differentialsdepo:

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

seller differentialsdepo:

• city: indianapolis, indiana
• # reviews: 564878
• rating: 98.7%

general differentialsdepo:

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

offer differentialsdepo:

• options: ship-to-home
• in stock #: 1
• sold #: 15
• price: $15.30
• item condition: New
• availability: in stock
• started: september 5, 2025