1. Shocks & Suspension On Sale
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  3. BALLS SCAL-PS778405-LS

BALLS SCAL-PS778405-LS Sport Upper Shaft Jack Bearing Seal All Kit

fits model: 440. make: Polaris. year: 1999.

Scal-ps778405-ls All Balls 1999 Polaris Sport 440 Upper Shaft Jack Bearing And Seal Kit

( Brand: Balls ), ( Manufacturer Part Number: SCAL-PS778405-LS ), ( Part Type: Bearing Seal Shaft )

Review BALLS All Polaris Sport Upper Shaft Jack Bearing And Seal Kit fits 440 1999

The **Balls SCAL-PS778405-LS 1999 Polaris Sport 440 Upper Shaft Jack Bearing Seal Kit** is a precision-engineered aftermarket component designed specifically for Polaris Sport 440 models manufactured in 1999, ensuring optimal performance and longevity for the upper shaft jack assembly. This high-quality kit includes a meticulously crafted **seal and bearing assembly** tailored to fit the unique specifications of the Sport 440 s drivetrain, where the upper shaft jack plays a critical role in transferring power from the transmission to the rear axle. Crafted from durable, long-lasting materials, the kit features a **reliable rubber or polyurethane seal** that effectively prevents contaminants like dirt, debris, and moisture from infiltrating the bearing housing, thereby reducing wear and extending the lifespan of the internal components. The **precision-machined bearing** within the kit is designed to minimize friction, allowing for smoother operation and reducing the risk of premature failure, which is particularly important for riders who demand consistent performance in demanding off-road conditions. Whether tackling rough trails, frequent jumps, or heavy-duty towing, this kit provides the robustness needed to withstand the stresses of aggressive riding while maintaining the integrity of the drivetrain. Installation is straightforward, requiring only basic tools, and the kit s compatibility with the 1999 Sport 440 ensures a perfect fit without the need for modifications. By upgrading to this **Balls SCAL-PS778405-LS kit**, riders can enhance the reliability and durability of their Polaris Sport 440, reducing the likelihood of costly repairs and ensuring a smoother, more efficient ride every time.

### **Pros and Cons of buying a Balls Scal-PS778405-LS 1999 Polaris Sport 440 Upper Shaft Jack Bearing Seal Kit**

#### **Pros:**

1. **Direct Compatibility** This kit is specifically designed for the 1999 Polaris Sport 440, ensuring a proper fit without modifications. This reduces the risk of installation errors or improper sizing.

2. **High-Quality Materials** Balls Manufacturing is a well-known brand in the off-road and ATV industry, known for durable components that withstand heavy use and harsh conditions.

3. **Prevents Leaks and Wear** The upper shaft jack bearing seal kit is critical for maintaining proper lubrication and preventing dirt, debris, and moisture from entering the drivetrain. A failing seal can lead to costly internal damage, so replacing it proactively extends the life of the transmission.

4. **Easy Installation** The kit typically includes all necessary seals and bearings, and the design is straightforward for experienced DIYers. Many users report that it can be installed in a few hours with basic tools.

5. **Cost-Effective Long-Term Solution** While the upfront cost may seem high, replacing a worn seal early avoids more expensive repairs down the road, such as transmission failure or bearing replacement.

6. **Improved Performance** A properly functioning seal ensures smooth operation of the shaft jack, reducing vibration and noise, which can enhance ride comfort and reliability.

7. **Warranty and Support** Balls Manufacturing often provides warranties or customer support, giving buyers confidence in the product s durability and performance.

#### **Cons:**

1. **Limited Availability** Since this is a specific, older-model part, it may not be as widely stocked as more common aftermarket components. You may need to order from specialty suppliers or wait for shipping.

2. **Skill Dependency** While the installation is manageable for those with mechanical experience, beginners may struggle without proper guidance. A poorly installed seal can still fail prematurely.

3. **Potential for Counterfeit Products** Due to the part s niche nature, there is a risk of purchasing counterfeit or low-quality replicas, especially if buying from untrusted sellers. Always verify the seller s reputation.

4. **Additional Tools May Be Needed** Depending on the condition of your ATV, you might require specialized tools (e.g., seal pullers, torque wrenches) to remove the old seals and install the new ones properly.

5. **Time-Consuming for Inexperienced Users** If you re not familiar with ATV drivetrain maintenance, the process could take longer than expected, potentially leading to frustration or mistakes.

6. **Cost Relative to New Parts** For some, the price of the kit may seem high compared to buying a used or refurbished ATV. However, this is a preventative measure rather than a replacement for a failed system.

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### **Conclusion**

The **Balls Scal-PS778405-LS 1999 Polaris Sport 440 Upper Shaft Jack Bearing Seal Kit** is a **highly recommended** purchase for owners of this model who want to maintain or restore their ATV s drivetrain health. The benefits of preventing leaks, reducing wear, and improving longevity far outweigh the minor drawbacks, particularly for those who prioritize long-term reliability over short-term cost savings.

If you re comfortable with basic mechanical work, this kit is a **wise investment** to avoid costly transmission repairs. However, if you lack experience, consider consulting a professional mechanic to ensure proper installation.

**Final Recommendation:**

**Buy the kit** if you need to replace worn seals and have the time or skills to install it correctly. Purchase from a reputable supplier to avoid counterfeit products, and follow the manufacturer s guidelines for installation. This is a **proactive step** that will save you money and hassle in the long run.

Details:

1999 Polaris Sport 440 Upper Shaft All Balls Jack Bearing and Seal Kit: Compatibility: Snowmobile, Part Application. Parts without fitment are to be assumed universal and may require vehicle modification. Jack shaft and drive kits contain chain case bearing, support seals, o-rings, miscellaneous components as needed.: Brand: All Balls, model Number: SCAL-PS778405-LS.

Our part availability is very diverse. This is helpful if you are buying multiple items. I need to exchange an item.

part #: scalps778405 price

  • $38.50

specifications snowmobileshocksoi:

  • for models: 440
  • for makes: Polaris
  • for years: 1999
  • brand: Balls
  • mpn: Scal-ps778405-ls
  • part type: Bearing Seal Shaft

offer snowmobileshocksoi:

  • sold: 0
  • availability: In Stock
  • started: May 19, 2026
  • quantity: 9
  • options: Ship-to-home

shipping snowmobileshocksoi:

  • cost: $0.00
  • service: Standard
  • transit: 3-8 Days
  • class: Standard
  • type: Fixed

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general snowmobileshocksoi:

  • Parts Accessories > Snowmobile Parts > Shocks Suspension
  • condition: New

seller snowmobileshocksoi:

  • # reviews: 85504
  • city: San Marcos, CA
  • rating: 99.9%

returns snowmobileshocksoi:

  • time: 30 Days
  • paid by: Seller
  • policy: Returns Accepted
for models: 440, for makes: polaris, for years: 1999, part type: bearing seal shaft,
category: snowmobile parts > shocks suspension, sku: 22428411704563891,
Balls SCAL-PS778405 Is Similar To:
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1 offer $38.50 USD
  • New. Offer #1 priced at $38.50 + $0.00 shipping estimate = $38.50* total. Our part availability is very diverse. Jack shaft and drive shaft kits contain chain case bearing, support bearing, seals, o-rings, and miscellaneous components as needed.FREE SHIPPING

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