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  3. NATIONAL SX-J128

NATIONAL SX-J128 Timing Cover Harmonic Balancer Sleeve Zi

fits model: Lemans. make: Pontiac. year: 1964–1981.

Sx-j128 National Timing Cover Harmonic Balancer Sleeve For 1964-1981 Pontiac Lemans Zi

( Brand: National ), ( Manufacturer Part Number: SX-J128 ), ( Manufacturer Warranty: 1 Year ), ( Ipn: C724 25-41 ), ( Placement On Vehicle: Engine Hardware Fasteners Fittings ), ( Compatible Year: 1981 1980 1979 1978 1977 1976 1975 1974 1973 1972 1971 1970 1969 ), ( Core Charge: Free No Core Charge ), ( Type: Engine Timing Cover Harmonic Balancer Sleeve ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc National Timing Cover Harmonic Balancer Sleeve )

Review NATIONAL Timing Cover Harmonic Balancer Sleeve For Pontiac Zi fits LEMANS 1964–1981

Introducing the National SX-J128 Timing Cover Harmonic Balancer Sleeve, a high-quality replacement part designed specifically for Pontiac Lemans and Z28 models manufactured between 1964 and 1981. This essential engine component is crucial for maintaining proper engine timing and reducing harmful vibrations.

The National SX-J128 Harmonic Balancer Sleeve is meticulously engineered using top-grade materials to ensure a perfect fit and reliable performance. It is precisely molded to match the original equipment, ensuring a seamless installation process and optimal engine function.

The harmonic balancer sleeve plays a vital role in your vehicle's engine system by absorbing and balancing the harmonics generated by the crankshaft and other rotating engine components. By doing so, it helps reduce unwanted vibrations and ensures a smoother engine operation.

This National part is a direct replacement for the original equipment, ensuring that you're installing a component that meets or even exceeds the original specifications. It is also designed to be compatible with all factory accessories and modifications, making it a versatile choice for various engine configurations.

The National SX-J128 Timing Cover Harmonic Balancer Sleeve is backed by a comprehensive warranty that covers any defects in materials or workmanship. This added peace of mind ensures that you're investing in a product that not only performs exceptionally well but also provides long-lasting reliability.

In summary, the National SX-J128 Timing Cover Harmonic Balancer Sleeve is an essential engine component for Pontiac Lemans and Z28 models from 1964 to 1981. It is precisely engineered using top-grade materials, ensuring a reliable and seamless installation process. Its primary function is to absorb and balance the harmonics generated by the engine components, reducing unwanted vibrations and ensuring optimal engine performance. Backed by a comprehensive warranty, this National part offers long-lasting reliability and peace of mind.

Pros and Cons of Buying a National SX-J128 Timing Cover Harmonic Balancer Sleeve for 1964-1981 Pontiac Lemans and Grand Prix (Zi)

Introduction:

The National SX-J128 Timing Cover Harmonic Balancer Sleeve is a replacement part designed for the timing covers of 1964-1981 Pontiac Lemans and Grand Prix (Zi) vehicles. This part is essential for maintaining engine balance and preventing timing cover damage. In this article, we will discuss the pros and cons of purchasing this timing cover harmonic balancer sleeve.

Pros:

1. Improved Engine Performance: A worn-out or damaged harmonic balancer sleeve can cause vibrations and engine noise. Replacing the old part with a new one can help restore balanced engine operation, leading to improved performance and a smoother ride.

2. Prevents Timing Cover Damage: The harmonic balancer sleeve absorbs the engine's vibrations to protect the timing cover from damage. Installing a new sleeve can help prevent costly repairs and extend the life of the timing cover.

3. OEM Quality: The National SX-J128 Timing Cover Harmonic Balancer Sleeve is a direct OEM replacement, ensuring a perfect fit and proper function.

4. Easy Installation: The installation process is relatively straightforward, typically taking around 1-2 hours for most mechanics or DIY enthusiasts.

5. Cost-Effective: Compared to the cost of a new timing cover or engine repair, the National SX-J128 Timing Cover Harmonic Balancer Sleeve is a cost-effective solution for maintaining the health of your Pontiac Lemans or Grand Prix (Zi) engine.

Cons:

1. Cost: While the part is cost-effective compared to major engine repairs, it still requires an investment. The price may vary depending on the supplier and shipping costs.

2. Availability: Depending on your location and the availability of the part at local auto parts stores, you may need to order the National SX-J128 Timing Cover Harmonic Balancer Sleeve online, which could result in a longer wait time.

3. DIY Installation Challenges: Although the installation process is relatively simple, some individuals may find it challenging to complete the job themselves. In such cases, hiring a professional mechanic might be a better option.

Conclusion:

The National SX-J128 Timing Cover Harmonic Balancer Sleeve is an essential component for maintaining the performance and longevity of your 1964-1981 Pontiac Lemans or Grand Prix (Zi) engine. While it requires an initial investment, the benefits in terms of improved engine performance, prevention of costly repairs, and OEM quality make it a worthwhile investment. If you are experiencing engine vibrations, noise, or suspect that your harmonic balancer sleeve is worn out, consider purchasing this part to keep your vehicle running smoothly.

Details:

National Timing Cover Harmonic Balancer Sleeve for 1964 1981 Pontiac LeMans zi: Status: In Stock.

part #: sxj128 price

  • $16.70

specifications parthick:

  • for models: Lemans
  • for makes: Pontiac
  • for years: 1964-1981
  • brand: National
  • mpn: Sx-j128
  • manufacturer warranty: 1 Year
  • ipn: C724 25-41
  • placement on vehicle: Engine Hardware Fasteners Fittings
  • compatible year: 1981 1980 1979 1978 1977 1976 1975 1974 1973 1972 1971 1970 1969
  • core charge: Free No Core Charge
  • type: Engine Timing Cover Harmonic Balancer Sleeve
  • fitment type: Direct Replacement
  • bundle description: 1 Pc National Timing Cover Harmonic Balancer Sleeve

offer parthick:

  • options: Ship-to-home
  • sold: 0
  • availability: In Stock
  • quantity: 10
  • started: February 2, 2026

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  • transit: 3-7 Days
  • type: Fixed
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  • time: 30 Days

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seller parthick:

  • city: Indianapolis, Indiana
  • # reviews: 619087
  • rating: 99.5%

general parthick:

  • Parts Accessories > Car Truck Parts Accessories > Other Car Truck Parts Accessories
  • condition: New
for models: lemans, for makes: pontiac, for years: 1964-1981, manufacturer warranty: 1 year, placement on vehicle: engine hardware fasteners fittings, compatible year: 1981 1980 1979 1978 1977 1976 1975 1974 1973 1972 1971 1970 1969, core charge: free no core charge, type: engine timing cover harmonic balancer sleeve, fitment type: direct replacement, bundle description: 1 pc national timing cover harmonic balancer sleeve,
category: auto parts > car truck parts accessories, sku: 14077576471747603,

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