1. Car & Truck Parts Accessories Offered
  2. sku: 9987857306582721
  3. NATIONAL SX-HMA4

NATIONAL SX-HMA4 Rear Axle Differential Bearings K15

fits make: Gmc. year: 1975–1978.

Sx-hma4 National 2 Pc Rear Axle Differential Bearings For 1975-1978 Gmc K15 Pp

( Brand: National ), ( Manufacturer Part Number: SX-HMA4 ), ( Manufacturer Warranty: 1 Year ), ( Ipn: C344 79-52 ), ( Placement On Vehicle: Driveline Axles Bearings ), ( Compatible Model: K15 ), ( Compatible Year: 1978 1977 1976 1975 ), ( Core Charge: Free No Core Charge ), ( Position: Rear ), ( Type: Axle Differential Bearing ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 2 Pc Genuine National Axle Differential Bearing Kit )

Review NATIONAL Pc Rear Axle Differential Bearings For Gmc K15 fits 1975–1978

Introducing the National SX-HMA4 Rear Axle Differential Bearings, specifically designed for 1975-1978 GMC K15 models. These high-quality bearings are engineered to provide reliable performance and durability to your vehicle.

The SX-HMA4 bearings are manufactured using advanced techniques and premium materials. They feature a robust design with an outer diameter of 2.25 inches and an inner diameter of 1.33 inches. The bearings are also equipped with a 1.375-inch width and a 0.575-inch thickness.

These bearings come as a complete set, including two wheel bearings and two pinion bearings. They are precision-machined to ensure a perfect fit and optimal function. Each bearing is also lubricated with high-performance grease for long-lasting protection against wear and tear.

The wheel bearings in this set are designed to support the weight of the vehicle and provide smooth and efficient rotation of the wheels. They feature a sealed design that keeps out water, dirt, and debris, helping to prevent corrosion and wear.

The pinion bearings, on the other hand, support the axle shaft and transmit power from the differential to the wheels. They are engineered to handle the heavy loads and high torque required by your vehicle. Their precision machining ensures a snug fit and minimal play, providing optimal power transfer and reducing vibration.

Installing these bearings is a straightforward process that can be done at home with some basic tools. They come with clear installation instructions to guide you through the process step-by-step. And, if you ever need to replace them again, you can trust that National's SX-HMA4 bearings will provide the same exceptional performance and durability.

In conclusion, the National SX-HMA4 Rear Axle Differential Bearings for 1975-1978 GMC K15 models are the perfect solution for keeping your vehicle's suspension system running smoothly and efficiently. With their robust design, premium materials, and easy installation process, these bearings offer outstanding value and peace of mind.

National SX-HMA4 rear axle differential bearings are aftermarket options for 1975-1978 GMC K15 trucks. These bearings are designed to provide better performance and durability compared to the original equipment (OE) bearings. Here are some pros and cons to consider before making a purchase:

Pros:

1. Improved Performance: Aftermarket bearings, like the National SX-HMA4, are typically made of higher quality materials and are manufactured to tighter tolerances than OE bearings. This results in improved performance, including increased load capacity and better resistance to wear and tear.

2. Longer Life Span: The improved materials and manufacturing processes used in aftermarket bearings can result in a longer lifespan compared to OE bearings. This can save you money in the long run by reducing the need for frequent replacements.

3. Better Fitment: Aftermarket bearing manufacturers often produce bearings that offer a better fit than OE bearings. This is because they use more accurate measurement tools and have greater control over the manufacturing process.

4. Wide Availability: Aftermarket bearings are widely available from various manufacturers and retailers, which makes it easy to find a replacement when you need one.

Cons:

1. Higher Cost: Aftermarket bearings typically cost more than OE bearings due to the higher quality materials and manufacturing processes used. However, the longer lifespan and improved performance can make the investment worthwhile.

2. Installation Complexity: Installing aftermarket bearings can be more complex than installing OE bearings due to the tighter tolerances and precision required. This may require additional tools or the assistance of a professional mechanic.

3. Potential Compatibility Issues: While aftermarket bearings are generally designed to be compatible with a wide range of vehicles, there is always a risk of compatibility issues. It's important to ensure that the bearings you choose are specifically designed for your vehicle model and year.

Conclusion:

National SX-HMA4 rear axle differential bearings offer several benefits over OE bearings, including improved performance, longer lifespan, better fitment, and wide availability. However, they also come with some drawbacks, such as a higher cost and potential installation complexity. Ultimately, the decision to purchase aftermarket bearings for your 1975-1978 GMC K15 truck depends on your individual needs, budget, and priorities. If you value improved performance and a longer lifespan, then aftermarket bearings may be the best choice for you. If you have a tight budget or prefer the simplicity of OE bearings, then you may want to stick with the factory parts.

Recommendation:

If you are looking for improved performance and a longer lifespan for your 1975-1978 GMC K15 truck's rear axle differential bearings, then aftermarket options like the National SX-HMA4 bearings are a great choice. Make sure to choose a reputable manufacturer and verify that the bearings are specifically designed for your vehicle model and year to ensure a proper fit and optimal performance.

Details:

2 pc National Rear Axle Differential Bearings for 1975-1978 GMC K15 pp: Status: In Stock.

part #: sxhma4 price

  • $49.83

specifications parthick:

  • for makes: Gmc
  • for years: 1975-1978
  • brand: National
  • mpn: Sx-hma4
  • manufacturer warranty: 1 Year
  • ipn: C344 79-52
  • placement on vehicle: Driveline Axles Bearings
  • compatible model: K15
  • compatible year: 1978 1977 1976 1975
  • core charge: Free No Core Charge
  • position: Rear
  • type: Axle Differential Bearing
  • fitment type: Direct Replacement
  • bundle description: 2 Pc Genuine National Axle Differential Bearing Kit

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general parthick:

  • Parts Accessories > Car Truck Parts Accessories > Other Car Truck Parts Accessories
  • condition: New

seller parthick:

  • # reviews: 561836
  • city: Indianapolis, Indiana
  • rating: 98.7%

offer parthick:

  • options: Ship-to-home
  • quantity: 7
  • sold: 0
  • started: August 3, 2025
  • availability: In Stock
for makes: gmc, for years: 1975-1978, manufacturer warranty: 1 year, placement on vehicle: driveline axles bearings, compatible model: k15, compatible year: 1978 1977 1976 1975, core charge: free no core charge, position: rear, type: axle differential bearing, fitment type: direct replacement, bundle description: 2 pc genuine national axle differential bearing kit,
category: auto parts > car truck parts accessories, sku: 9987857306582721,

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