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Differential Rear Axle Brake Shaft for Caterpillar 424B & 424B HD – 3318508

SKU:
3318508
FitsModel:
424B, 424B HD
ListDescription:
Differential Rear Axle Brake Shaft
Caterpillar 424B 424B HD backhoe Carraro differential rear axle brake shaft 3318508
Part # 3318508

Part # 3318508

Fits Models At A Glance:

Use the list below to locate your specific model. Confirm your serial number before ordering.

  • 424B
  • 424B HD

Key Notes:

  • Part Numbers: 3318508, 331-8508, 138737
  • Weight: 14.00 lbs (6.35 kg)
  • Type: Differential rear axle brake shaft — Carraro rear drive axle differential
  • Application: Internal shaft within the Carraro rear drive axle differential that interfaces with the brake assembly to engage and hold the rear axle braking system on applicable Caterpillar backhoe loaders

Common Use Case or Symptoms:

Use when the rear axle differential is being rebuilt or overhauled, the brake shaft is worn, cracked, or damaged, rear brake engagement is inconsistent or ineffective, or abnormal noise is coming from the differential area during braking — a failed brake shaft disrupts the brake engagement linkage within the Carraro rear differential axle, causing reduced or complete loss of rear braking effectiveness.

Why Choose Broken Tractor?

  • ✅ Rear Drive Axle Differential Specific: This brake shaft lives in the Carraro rear drive axle differential — confirm you need the rear axle differential component before purchasing
  • ✅ 424B and 424B HD Fitment: Confirm your machine's serial number falls within the listed range before ordering
  • ✅ Fast Shipping from a U.S.-Based Team: In-stock and ready to ship from our U.S. warehouses
$119.00

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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1-800-909-7060 Parts Request Form

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Did you accidentally purchase the incorrect part? We offer returns and exchanges here at Broken Tractor. To proceed with a return, please call us toll free, 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! Give us a call at 1-800-909-7060 and we would be pleased to help you.

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Product: Category: Brand: Head Title: Rear Axle Brake Shaft | Broken Tractor | 3318508