Free Shipping to commercial address. *Restrictions apply


Caterpillar® 259B3 279C 289C 259D Front Idler

Cat 536-3551 Idler
Caterpillar® 259B3 279C 289C 259D Front Idler
Replacement front idler wheel for Caterpillar® 259D, 279C, 279D, 289C, 299C, and 259B3 track loaders. This is the dual flange idler wheel at the front of the undercarriage. Verify that you have a double flange idler because there is a triple flange idler available for specific models. Order online today for FREE shipping to commercial addresses.
SKU: 536-3551
Weight: 89 lbs
Make: Cat
Shipping: Fast and Free!
Price: $755.00

Rubber tracks and wear parts are sold individually unless specified in the details. We offer free shipping across the USA when you order online and ship to a commercial address. *Some restrictions apply.

536-3551 Dual Flange Idler Assembly

This is the aftermarket replacement front idler wheel, designed to replace the original 304-1878 front idler wheel on the Caterpillar® steel undercarriage system. This dual flange tension idler wheel is designed to fit the following Caterpillar® compact track loaders:

Guaranteed Fit for Cat®

This dual flange idler (536-3551) is guaranteed to fit:

  • Caterpillar® 259B3
  • Caterpillar® 259D
  • Caterpillar® 259D3
  • Caterpillar® 279C
  • Caterpillar® 279D
  • Caterpillar® 279D3
  • Caterpillar® 289C
  • Caterpillar® 289D
  • Caterpillar® 289D3
  • Caterpillar® 299C
  • Caterpillar® 299D3

Alternate Part Numbers

  • Caterpillar® Dealer Part Number: 304-1878, 536-3551

Reliable Quality

Our double flange idler assemblies come complete with double lip seals that are pressure tested during production at the factory to lock out dirt and contaminants and lock the lubrication in for long-lasting reliable service you can rely on, backed by a factory warranty against failure.

Alternate Idler

You may have a triple flange idler (348-9647) with an extra flange down the center of the idler for added stability. If you need help locating your exact part please let us know. The triple flange idler is typically on XHP models.

Caterpillar 259B3 259D Parts Diagram

Cat 259D Parts Tracks