CAT 505-2823 Transmission Planetary Sun Gear 42 37 D8T D6T

( Brand: Cat ), ( Manufacturer Part Number: 505-2823 ), ( Part Type: Transmission Sun Gear ), ( Unit Type: Unit ), ( Color: Gray ), ( Country Of Origin: China )

Review CAT 42 37 Teeth Transmission Planetary Sun Gear For D8t D6t fits D6 D8 D7

The Cat 505-2823 is a high-performance planetary sun gear specifically designed for use in Caterpillar D8T, D6T, D6, D8, and D7 series bulldozers and other heavy-duty machinery. This sun gear is an essential component of the transmission system, responsible for transmitting power from the engine to the drive wheels.

The Cat 505-2823 sun gear is manufactured using robust materials, ensuring durability and reliability even under the most demanding operating conditions. It is made of heat-treated alloy steel, which provides strength and resistance to wear and tear. The gear teeth are precision-machined to ensure smooth engagement and efficient power transfer.

This sun gear features a 42-37 tooth configuration, making it suitable for specific applications within the Caterpillar transmission system. Its planetary design enables it to transmit power in both directions, providing greater flexibility and versatility for the machine.

The Cat 505-2823 sun gear is designed to operate in high-torque, heavy-load applications. It is capable of handling significant power inputs while maintaining quiet and efficient operation. Its robust design ensures that it can withstand the high forces generated by the transmission system, ensuring prolonged service life and minimal downtime.

This sun gear is engineered to meet or exceed the demanding specifications of Caterpillar, ensuring optimal performance and reliability. It is backed by the company's renowned customer support and aftermarket services, providing peace of mind to customers who require a dependable and durable component for their heavy-duty machinery.

In summary, the Cat 505-2823 42-37 planetary sun gear is a high-performance component designed for use in Caterpillar D8T, D6T, D6, D8, and D7 series bulldozers and other heavy-duty machinery. It is manufactured using robust materials, precision-machined for smooth engagement, and designed to handle high torque and heavy loads. Its planetary design provides flexibility and versatility, while its robust design ensures prolonged service life and minimal downtime.

Pros and Cons of Buying a Cat 505-2823 42 37 Transmission Sun Gear

The Cat 505-2823 42 37 transmission sun gear is a crucial component for various Caterpillar models such as D8T, D6T, D6, D8, and D7. This sun gear plays a significant role in the transmission system and affects the overall performance and efficiency of the machinery. In this article, we will discuss the pros and cons of buying this sun gear to help you make a well-informed decision.

1. Improved Efficiency: A new sun gear can lead to increased efficiency and productivity of your machinery. Worn-out or damaged gears can cause power loss and decreased performance.

2. Enhanced Reliability: A new sun gear ensures that the transmission system functions correctly, minimizing the risk of unexpected breakdowns and costly repairs.

3. Longer Service Life: By investing in a new sun gear, you can extend the service life of your machinery, reducing the need for frequent replacements and maintenance.

4. Enhanced Torque Capacity: A new sun gear can provide improved torque capacity, allowing your machinery to handle heavier loads and demanding applications.

1. Cost: The price of a new Cat 505-2823 42 37 transmission sun gear can be quite substantial, especially for those on a tight budget.

2. Installation Complexity: Installing a new sun gear requires specialized knowledge and tools, which can add to the overall cost and complexity of the process.

3. Availability: Depending on your location and the availability of stock, it may take some time to source and receive a new sun gear, causing potential downtime for your machinery.

The decision to buy a Cat 505-2823 42 37 transmission sun gear depends on several factors, including the current condition of your machinery, budget, and the importance of maintaining optimal performance and reliability. While the upfront cost may be significant, the long-term benefits, such as increased efficiency, reliability, and torque capacity, may outweigh the initial investment.

To make an informed decision, it is recommended that you consult with a qualified machinery technician or Caterpillar dealer to assess the condition of your current sun gear and determine if a replacement is necessary. They can provide you with an accurate quote for the new sun gear, installation, and any additional costs. Additionally, exploring financing options or discussing extended warranties may help mitigate the initial investment.

Details:

CAT 505-2823: 42 x 37 Teeth Transmission Planetary Sun Gear For D8T D6T D6 D8 D7.

part #: 5052823 price

• $320.99

specifications othellodrivetrain:

• for models: D6, D8, D7
• brand: Cat
• mpn: 505-2823
• part type: Transmission Sun Gear
• unit type: Unit
• color: Gray
• country of origin: China

general othellodrivetrain:

• Car Truck Parts Accessories > Transmission Drivetrain > Other Transmission Drivetrain
• condition: New other see details

shipping othellodrivetrain:

• class: Standard
• service: USPS Ground Advantage
• carrier: USPS
• transit: 5-7 Days
• cost: $0.00
• type: Fixed

offer othellodrivetrain:

• sold: 0
• quantity: 1
• started: May 24, 2026
• options: Ship-to-home
• availability: In Stock

returns othellodrivetrain:

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

payments othellodrivetrain:

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

seller othellodrivetrain:

• city: North Salt Lake, Utah
• # reviews: 74906
• rating: 99.7%

Cat 505-2823 Is Similar To:

• Caterpillar 248-2751 Cat 248-7521 Tdto Sae 30 Transmission And Drive Train Oil 1 Gal Pack Of 3 (35.6% similar) Recommended application:power shift transmissions, most final drives and wet brake compartments. Fully qualifies for use in all Caterpillar hydraulic and hydro static systems. Provides greater machine rim pull. Cat Tito 30W transmission drive train oil, 1 gal.part number: 248-7521...(December 17th, 2025)