Quantity Note: Three planetary gears are used per axle corner — six per machine. Sold individually
Application:Rear axle planetary gear — meshes with the ring gear and sun gear within the Carraro rear axle planetary hub assembly to transfer and multiply torque to the rear wheels on applicable Caterpillar backhoe loaders
Note:3208606 and 4550727 (455-0727) are alternate Cat catalog numbers for the same Carraro DPN 138736 planetary gear — confirm your machine model and serial number before ordering
Condition:Aftermarket replacement part
Common Use Case or Symptoms: Use when the rear axle planetary hub assembly is being rebuilt or overhauled, planetary gear teeth are worn, chipped, or broken, or the rear axle is generating grinding or abnormal noise from the hub area — worn or damaged planetary gears cause uneven torque distribution, noise, and eventual loss of drive through the rear axle hub assembly on applicable Cat backhoe loaders.
Why Choose Broken Tractor:
✅ Model and Serial Number Fitment Listed: 3208606 (4550727) is confirmed as Carraro DPN 138736 — fits 415F2 IL, 424B, 424B HD, 424B2, and 426F2 backhoe loaders. Each model and its serial number range is listed above — verify yours before ordering
✅ Three Per Axle Corner — Six Per Machine: One listing covers a single planetary gear — order the correct quantity for your rebuild. Three gears are required per hub, six for a complete rear axle overhaul
✅ Fast Shipping from a U.S.-Based Team: In-stock and ready to ship from our U.S. warehouses
$125.00/ea
Shipping calculated at checkout. If any item in your order is temporarily unavailable, we'll contact you to arrange a back-order or refund — whichever you prefer.
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Do you need your part quickly? You're in luck! We have warehouses all over the country to ensure a quick and easy delivery time. Most of our parts ship from our warehouses the same day you place your order. And many times, orders are delivered in Two to Three days.
Our in house parts are manufactured following strict quality standards in our warehouse in Ohio. Parts such as hydraulic cylinders, pins, bushings, sheet metal, track adjusters, booms and dipper sticks are all ready to ship same day that they are purchased! With less time to wait for your shipment, you will be able to get back to work as quickly as possible.
Did you accidentally purchase the incorrect part? We offer returns and exchanges here at Broken Tractor. To proceed with a return, please fill out our form, and we will provide you with return authorization and a step by step return process for your convenience. We are more than happy to help you exchange your part for the correct one! fill out our form to make a request here at Return Request Form and we would be pleased to help you.
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