NATIONAL SX-29RE Shaft Seal Kit Manual Transmission

( Brand: National ), ( Manufacturer Part Number: SX-29RE ), ( Type: Manual Transmission Output Shaft Seal Kit ), ( Manufacturer Warranty: 1 Year ), ( Ipn: C130 76-12 ), ( Item Length: 2.750 ), ( Placement On Vehicle: Transmission Gaskets Sealing Systems ), ( Compatible Year: 1978 1977 1976 1975 ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine National Manual Transmission Output Shaft Seal Kit )

Review NATIONAL Output Shaft Seal Kit For Gmc Manual Transmission fits K25 XU 1975–1978

Introducing the National SX-29RE Shaft Seal Kit, specifically designed for the GMC K25 manual transmission XU used in select 1975-1978 models. This kit is an essential upgrade for those seeking optimal performance and reliability from their classic GMC vehicle.

The SX-29RE Shaft Seal Kit includes a complete set of high-quality, replacement shaft seals that are engineered to provide a perfect fit and superior sealing capabilities. These seals are meticulously manufactured using advanced materials that resist wear and tear, ensuring long-lasting performance even in the most demanding conditions.

Each seal in this kit is designed to address the unique challenges presented by the GMC K25 manual transmission XU. The seals effectively prevent transmission fluid from leaking out, maintaining proper lubrication levels and protecting the transmission from damaging contaminants.

Installing the National SX-29RE Shaft Seal Kit is a straightforward process, making it an ideal choice for both professional mechanics and dedicated DIY enthusiasts. The kit comes with clear, easy-to-follow instructions, ensuring a hassle-free installation experience.

Moreover, the SX-29RE Shaft Seal Kit is an excellent investment for those looking to restore or maintain their classic GMC vehicle's value. By providing reliable sealing performance, this kit helps ensure the longevity and dependability of your transmission system, contributing to the overall value and desirability of your vehicle.

In summary, the National SX-29RE Shaft Seal Kit is a must-have component for any GMC K25 manual transmission XU used in 1975-1978 models. Its high-quality design, durability, and ease of installation make it an indispensable tool for those seeking optimal performance and reliability from their classic GMC vehicle.

The National SX-29RE Shaft Seal Kit is designed for the manual transmission XU used in 1975-1978 GMC K25 trucks. Here are some pros and cons to help you make an informed decision about purchasing this kit:

1. OEM (Original Equipment Manufacturer) replacement: This kit is manufactured by National Sealing Systems, a trusted supplier of OEM seals and gaskets.

2. Complete Kit: The SX-29RE includes all necessary seals and gaskets for the manual transmission XU, making it a convenient and cost-effective solution for a complete seal replacement.

3. High-Quality Materials: The seals in this kit are made from high-quality materials designed to provide excellent sealing performance and durability.

4. Reduces Leaks: By replacing the worn or damaged seals in your transmission, you can effectively reduce or eliminate leaks, preventing further damage and saving you money on repairs.

5. Improves Performance: A properly sealed transmission ensures that all fluid stays contained, which can help improve overall performance and fuel efficiency.

1. Cost: The National SX-29RE Shaft Seal Kit may be more expensive than aftermarket alternatives, but the benefits of OEM quality and a complete kit may outweigh the additional cost for some users.

2. Installation: Installing the seals and gaskets in the transmission can be a complex and time-consuming process, requiring specialized tools and expertise.

3. Availability: Depending on your location, it may be more difficult to find this specific kit compared to more widely available aftermarket alternatives.

The National SX-29RE Shaft Seal Kit for the 1975-1978 GMC K25 manual transmission XU offers several advantages, including OEM quality, a complete kit, and high-quality materials. However, it also comes with a higher cost and the potential complexity of installation. Ultimately, the decision to purchase this kit depends on your priorities, budget, and level of expertise in working on your vehicle's transmission.

If you value the benefits of OEM quality and a complete kit, and you have the necessary tools and expertise to install the seals and gaskets yourself, then the National SX-29RE Shaft Seal Kit is an excellent choice for addressing leaks and improving the performance of your 1975-1978 GMC K25 manual transmission XU. However, if you're looking for a more budget-friendly alternative or prefer to have a professional handle the installation, you may want to consider aftermarket options.

Details:

National Output Shaft Seal Kit for 1975-1978 GMC K25 Manual Transmission Xu: Status: In Stock.

part #: sx29re price

• $22.68

specifications manutransmission:

• for models: K25, Xu
• for makes: Gmc
• for years: 1975-1978
• brand: National
• mpn: Sx-29re
• type: Manual Transmission Output Shaft Seal Kit
• manufacturer warranty: 1 Year
• ipn: C130 76-12
• item length: 2.750
• placement on vehicle: Transmission Gaskets Sealing Systems
• compatible year: 1978 1977 1976 1975
• core charge: Free No Core Charge
• fitment type: Direct Replacement
• bundle description: 1 Pc Genuine National Manual Transmission Output Shaft Seal Kit

payments manutransmission:

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

offer manutransmission:

• availability: In Stock
• sold: 0
• quantity: 3
• started: April 20, 2026
• options: Ship-to-home

general manutransmission:

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

shipping manutransmission:

• cost: $0.00
• transit: 3-7 Days
• type: Fixed
• service: Standard, Expedited
• class: Standard, Expedited

returns manutransmission:

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

seller manutransmission:

• rating: 99.6%
• # reviews: 647271
• city: Indianapolis, Indiana

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