MACK 6990-045231 Grease Packet Nos 1OZ

( Manufacturer Part Number: 6990-045231 )

Review MACK 6990045231 Grease Packet 1oz Nos

The **Mack 6990-045231 Grease Packet (1oz, NOS)** is a high-performance, original equipment-grade lubricant designed specifically for heavy-duty diesel engines and related mechanical components, ensuring peak efficiency and longevity in demanding commercial and industrial applications. Part of Mack Trucks trusted line of aftermarket and replacement parts, this grease packet contains a premium, semi-synthetic formulation engineered to withstand extreme temperatures, heavy loads, and continuous stress making it an ideal choice for critical moving parts such as universal joints, kingpins, sway bars, and other high-friction joints in truck suspensions and drivetrains. The **1oz (approximately 28.35 grams) packet** is pre-measured for convenience, eliminating the need for guesswork when servicing vehicles, and its **new old stock (NOS)** condition guarantees that it is unused and in pristine, factory-sealed condition, ensuring optimal performance and compatibility with modern and vintage Mack engines alike. This grease is formulated with a stable, high-viscosity base to resist oxidation, prevent rust, and provide superior adhesion to metal surfaces, reducing wear and tear while minimizing the risk of premature failure in harsh operating environments. Whether used in fleet maintenance, restoration projects, or routine upkeep, the **Mack 6990-045231 Grease Packet** delivers reliable lubrication, extending component life and maintaining operational integrity under the most grueling conditions. Its compatibility with Mack s original specifications ensures seamless integration into existing lubrication systems, making it a trusted staple for professionals who demand nothing less than factory-quality performance.

**Pros and Cons of buying a Mack 6990-045231 (6990045231) Grease Packet (1 oz, NOS)**

1. **Original Equipment Manufacturer (OEM) Quality** Mack Trucks is a reputable manufacturer, and NOS (New Old Stock) parts are often sourced from surplus inventory that meets original specifications. This ensures compatibility and reliability with Mack engines and components.

2. **Direct Compatibility** The grease packet is designed specifically for Mack engines, particularly those requiring this exact part number. Using OEM grease reduces the risk of compatibility issues or premature wear.

3. **Long-Term Durability** Mack parts are built to withstand heavy-duty use, making this grease packet suitable for applications requiring high performance and longevity.

4. **Ease of Availability** While NOS parts may be harder to find than new aftermarket alternatives, they are still widely available through trucking supply chains, dealerships, or online marketplaces like eBay, RockAuto, or specialized surplus stores.

5. **Minimal Risk of Counterfeit Products** Since NOS parts are often sold through trusted channels, the likelihood of receiving a fake or substandard product is lower compared to unregulated aftermarket sources.

6. **Maintenance Convenience** The 1 oz packet is a standard size for greasing components like kingpins, fifth wheels, or other pivot points, making it easy to use in routine maintenance.

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1. **Higher Cost Compared to Aftermarket Alternatives** NOS OEM parts are typically more expensive than generic or aftermarket grease packets. For example, you might pay $10 $20 for this Mack-specific packet, whereas a similar aftermarket option could cost half as much.

2. **Limited Availability** NOS inventory can be inconsistent, meaning you may need to search multiple suppliers or wait for restocks. This can be inconvenient if you need the part urgently.

3. **Potential for Overpaying** Some NOS listings may include premiums for "vintage" or "rare" status, even if the part is functionally identical to a newer OEM version. Always verify the part s condition and authenticity.

4. **Storage and Handling Risks** NOS parts are often stored for extended periods, which could expose the grease to environmental factors (e.g., moisture, temperature fluctuations) if not properly sealed. Check the packet for signs of degradation before use.

5. **No Warranty or Return Policy (Sometimes)** Unlike new parts purchased directly from a dealer, NOS items may not come with a warranty. Some sellers offer returns, but policies vary, and you may bear the risk if the part fails prematurely.

6. **Overkill for Minor Applications** If you re using this grease packet for a non-critical component (e.g., a minor pivot point on a light-duty vehicle), the expense may not justify the OEM advantage. A generic lithium-based grease could suffice.

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The Mack 6990-045231 grease packet is a solid choice if you prioritize **reliability, compatibility, and long-term performance** in a heavy-duty Mack engine or component. The OEM backing reduces risks associated with aftermarket alternatives, and the NOS designation ensures you re getting a part that meets original specifications. However, the **higher cost and potential availability issues** make it less ideal for casual or budget-conscious users.

For most **commercial truck fleets, dealerships, or serious DIY mechanics**, the investment is justified. For **light-duty or non-critical applications**, a cheaper aftermarket grease packet (e.g., Mobilgrease XEP or a lithium-based alternative) may offer similar protection at a fraction of the cost.

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- You re maintaining a Mack truck or equipment where OEM parts are critical.

- You trust the supplier s authenticity (check reviews, seller ratings, and packaging).

- You re willing to pay a premium for peace of mind and longevity.

- You re on a tight budget and the application isn t mission-critical.

- You can verify that a generic high-quality grease (e.g., lithium-based, NLGI 2) meets your needs.

- You re purchasing from a reputable aftermarket brand (e.g., Mobil, Timken, or Clark).

**Final Tip:** Always inspect the grease packet for leaks, contamination, or expiration dates before use. If possible, purchase from a dealer or supplier with a return policy to mitigate risks.

Details:

If the original package is included it may show signs of wear. Mack 6990-045231, Grease Packet 1oz NOS. Items are shipped using USPS, UPS, and FedEx. Grease Packet 1oz is new and in good condition, not original packaging.

All parts are in stock and ready to ship. Pictures: Thumbnails.

part #: 6990045231 price

• $15.29

specifications automobilefluids:

• for makes: Mack
• mpn: 6990-045231

shipping automobilefluids:

• cost: $0.00
• carrier: USPS, UPS
• service: USPS Ground Advantage, USPS Priority Mail Flat Rate Envelope, UPS Next Day Air, UPS 2nd Day Air
• type: Calculated
• transit: 4-9 Days
• class: Standard, Expedited, One-day

general automobilefluids:

• Automotive Tools Supplies > Fluids Chemicals > Grease Lube
• condition: New other see details

returns automobilefluids:

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

offer automobilefluids:

• sold: 0
• availability: In Stock
• quantity: 1
• started: March 12, 2026
• best offers: True
• options: Ship-to-home

payments automobilefluids:

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

seller automobilefluids:

• # reviews: 129872
• city: Ashaway, Rhode Island
• rating: 99.9%

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