245-3820 GEAR-SUN is a precision-engineered 36-tooth sun gear designed for Caterpillar heavy-duty planetary drivetrain systems. It plays an important role in transferring power through the planetary gear arrangement, making accurate tooth engagement and reliable construction essential for demanding haul truck operations. Suitable for CAT 785G, 785 and 789C applications, this component is a practical replacement option for maintaining drivetrain performance and minimizing equipment downtime.
36-tooth sun gear designed for heavy-duty planetary drivetrain applications.
Manufactured for accurate gear engagement and efficient torque transmission.
Helps maintain stable power transfer within the planetary gear system.
Suitable for demanding mining, hauling, and heavy earthmoving conditions.
Part number 245-3820 is associated with earlier references including 8W-0159 and 188-0655.
Compatible Machine
The 245-3820 GEAR-SUN is used in Caterpillar off-highway truck drivetrain applications. It is listed for CAT 785, 785G and 789C, with broader catalog references also covering several 785/789 series machines.
CAT 785
CAT 785G
CAT 789C
Before ordering, customers should confirm the machine serial number and existing part number to ensure correct fitment.
Applications
Mining: Supports reliable drivetrain power transmission on large haul trucks.
Quarry: Suitable for heavy-duty material hauling operations.
Construction: Helps maintain dependable power delivery under demanding working conditions.
Heavy Earthmoving: Designed for high-load planetary drivetrain applications.
Large Infrastructure Projects: Suitable for heavy-duty haulage fleets working continuously on major projects.
Why Choose YLCM?
20+ Years Experience – Professional experience in construction and mining machinery parts.
Large Warehouse – A wide range of machinery parts available for sourcing.
Fast Delivery – Efficient order processing and export coordination.
Genuine & OEM Parts – Genuine, OEM and quality replacement options available.
Export to 60+ Countries – Supporting customers across global markets.
Professional Technical Support – Assistance with part identification and model compatibility.
Packaging
The 245-3820 GEAR-SUN is securely packed for international transportation. Standard export cartons or reinforced wooden packaging can be arranged according to the product size and shipping requirements. Internal protection helps reduce movement, impact and moisture exposure during transportation.
Shipping
YLCM supports flexible international logistics solutions according to destination and order requirements:
Sea Freight
Railway Transportation
Land Transportation
Multimodal Logistics
Shipping arrangements can be coordinated for individual replacement parts as well as larger machinery-parts orders.
Frequently Asked Questions
Q1: What is 245-3820? A: 245-3820 is a Caterpillar GEAR-SUN, a 36-tooth sun gear used in heavy-duty planetary drivetrain applications.
Q2: Which machines use 245-3820? A: It is listed for CAT 785, 785G and 789C, with additional references across the 785 and 789 series.
Q3: Is 245-3820 a complete planetary gear assembly? A: No. It is the sun gear component of the planetary gear system.
Q4: How many teeth does this sun gear have? A: The available catalog data identifies 245-3820 as a 36-tooth sun gear.
Q5: Is 245-3820 related to 8W-0159? A: Yes. Parts catalogs identify 245-3820 in the same replacement/supersession path as 8W-0159 and 188-0655.
Q6: Can YLCM help confirm compatibility? A: Yes. Send us your machine model, serial number and existing part number, and our team can help verify the correct part.
Request a Quote
Looking for 245-3820 GEAR-SUN for CAT 785G, 785 or 789C?
Send us your required quantity, machine model and serial number. YLCM PARTS can provide product availability, pricing and international shipping options for your order.