1. Car & Truck Manual Transmission Parts Deals
  2. sku: 4212093007121792
  3. NATIONAL SX-K4WN

NATIONAL SX-K4WN Transmission Shaft Seal Manual Gaskets Qk K35

fits make: Gmc. year: 1977–1978.

Sx-k4wn National Transmission Shift Shaft Seal For 1977-1978 Gmc K35 Manual Gaskets Qk

( Brand: National ), ( Manufacturer Part Number: SX-K4WN ), ( Type: Multi Purpose Seal ), ( Ipn: C217 85-56 ), ( Item Length: 2.000 ), ( Manufacturer Warranty: 1 Year ), ( Compatible Model: K35 ), ( Compatible Year: 1978 1977 ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine National Multi Purpose Seal )

Review NATIONAL Transmission Shift Shaft Seal For Gmc K35 Manual Gaskets Qk fits 1977–1978

The National SX-K4WN transmission shaft seal is a crucial component for maintaining the integrity of the manual transmission system in certain GMC K35 models from 1977 and 1978. This seal is specifically designed to prevent transmission fluid from leaking out of the shaft, ensuring a reliable and efficient power transmission from the engine to the wheels.

The SX-K4WN transmission shaft seal is made of high-quality, durable materials that can withstand the harsh conditions of regular use. It features a precise fit to seal off the transmission shaft, preventing fluid loss and potential damage to other components. This seal is essential for maintaining the proper lubrication of the transmission, which is critical for the longevity and performance of the vehicle.

The SX-K4WN transmission shaft seal is a manual gasket, meaning it is designed to be installed manually by the user. It comes in a flat, rectangular shape with a thickness of approximately 0.12 inches (3.175mm). The gasket material is a flexible, rubber-like substance that can conform to the contours of the transmission shaft and sealing surface.

The installation process for this transmission shaft seal is relatively straightforward but requires attention to detail to ensure a proper seal. It is recommended to drain the transmission fluid before installing the new seal to make the installation process easier and prevent potential messes. Once installed, the transmission fluid should be refilled to the recommended level.

It is crucial to replace the transmission shaft seal when it becomes worn or damaged to prevent potential transmission issues. Symptoms of a faulty transmission shaft seal may include difficulty shifting gears, a whining or grinding noise coming from the transmission, or a visible transmission fluid leak. By installing a new National SX-K4WN transmission shaft seal, you can help prevent these issues and maintain the overall health and performance of your GMC K35.

Buying a National SX-K4WN transmission shaft seal for a 1977-1978 GMC K35 with manual transmission comes with both advantages and disadvantages. Here are some potential pros and cons to consider before making a purchase:

Pros:

1. OEM (Original Equipment Manufacturer) compatibility: This seal is manufactured by National, which is a well-known automotive parts supplier. It is specifically designed to fit and function like the original seal, ensuring a proper seal and reducing the likelihood of leaks.

2. Durability: National is known for producing high-quality parts, and this seal is no exception. It is made to withstand the demands of a manual transmission, providing long-lasting protection against leaks.

3. Availability: National is a widely available brand, and you can find this seal at many auto parts stores and online retailers. This makes it a convenient option for those who need to replace their transmission shaft seal quickly.

4. Cost-effective: While not the cheapest option, this seal is priced competitively compared to some other aftermarket brands. It offers a good balance between price and quality.

Cons:

1. Cost: While not the most expensive option, this seal may still be more expensive than some aftermarket brands. However, the cost difference may be worth it for the peace of mind that comes with using an OEM part.

2. Installation: Installing a transmission shaft seal can be a challenging task, especially for those without experience. It may require the use of special tools and techniques, which can add to the cost and time of the repair.

3. Availability at local auto parts stores: While National is a widely available brand, it may not be stocked at every local auto parts store. You may need to order it online or visit multiple stores to find it.

Conclusion:

The decision to buy a National SX-K4WN transmission shaft seal for a 1977-1978 GMC K35 with manual transmission depends on your individual needs and priorities. If you value OEM compatibility, durability, and availability, this seal may be the best choice for you. However, if cost is a major concern, you may want to consider an aftermarket alternative. Ultimately, the decision is yours to make based on your specific circumstances and preferences.

Recommendation:

If you are confident in your mechanical abilities and have the necessary tools and knowledge to install the seal yourself, the National SX-K4WN transmission shaft seal is a solid choice. It offers the peace of mind that comes with using an OEM part and is priced competitively compared to some other options. However, if you are unsure about your ability to install the seal or prefer a more cost-effective option, you may want to consider an aftermarket alternative or seeking the assistance of a professional mechanic.

Details:

National Transmission Shift Shaft Seal for 1977-1978 GMC K35 Manual Gaskets qk: Status: In Stock.

part #: sxk4wn price

  • $12.46

specifications manutransmission:

  • for makes: Gmc
  • for years: 1977-1978
  • brand: National
  • mpn: Sx-k4wn
  • type: Multi Purpose Seal
  • ipn: C217 85-56
  • item length: 2.000
  • manufacturer warranty: 1 Year
  • compatible model: K35
  • compatible year: 1978 1977
  • core charge: Free No Core Charge
  • fitment type: Direct Replacement
  • bundle description: 1 Pc Genuine National Multi Purpose Seal

shipping manutransmission:

  • type: Fixed
  • class: Standard, Expedited
  • transit: 4-8 Days
  • service: Standard, Expedited
  • cost: $0.00

payments manutransmission:

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

returns manutransmission:

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

offer manutransmission:

  • quantity: 5
  • availability: In Stock
  • sold: 0
  • started: March 16, 2025
  • options: Ship-to-home

general manutransmission:

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

seller manutransmission:

  • rating: 98.8%
  • # reviews: 548683
  • city: Indianapolis, Indiana
for makes: gmc, for years: 1977-1978, type: multi purpose seal, item length: 2.000, manufacturer warranty: 1 year, compatible model: k35, compatible year: 1978 1977, core charge: free no core charge, fitment type: direct replacement, bundle description: 1 pc genuine national multi purpose seal,
category: auto parts > car truck parts accessories > transmission drivetrain > manual transmission parts, sku: 4212093007121792,

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