Free Shipping to commercial address. *Restrictions apply


Case CT445 TV450 TR320 Front Idler

Case 47378990 Front Idlers
Case CT445 TV450 TR320 Front Idler
Case compact track loaders use this front tension idler across most CT, TR, and TV models. Save money by purchasing online and skipping the trip to the dealer. This idler ships for free when you check out online. Check your entire Case undercarriage for worn parts and replace all worn or broken parts simultaneously to maximize the undercarriage's lifespan.
SKU: 47378990
Weight: 84 lbs
Make: Case
Shipping: Fast and Free!
Price: $391.00

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.

Case compact track loaders use the same undercarriage parts on the majority of their models from the CT420 through the TV450. Here is the aftermarket replacement front idler for Case compact track loaders listed below. This tension idler fits models from the earliest generation as well as many current models, however, CNH did release a larger diameter idler in 2015 so your existing idler may be two inches larger in diameter than this idler. This is a larger roller at the furthest point forward on the undercarriage. We stock the bottom rollers, sprockets, and the rear idler, but this is the larger front idler roller and it is not interchangeable in the rear position. The idler wheel bolts to the tensioner at the front of the track frame. Replacing a worn-out front tension idler is critical to preventing detracking.

This idler assembly is fully assembled and is designed to reuse your existing factory bolts for easy installation into your yoke. We carry the complete replacement undercarriage for these Case track loaders.

Alternate Part Numbers

  • Case Dealer Part Number: 47378990
  • New Holland Dealer Part Number: 87480418, 87535298

Optional Idler Availability

This idler will fit the models listed, but it is based on the original specification. Case updated the front idler to a larger diameter version known as part number 47620836. Our front idler was designed to be higher quality than your original CNH idler so we have not increased the diameter of the idler, and we still use the original 11.4 inch diameter idler.

Alternate Models

This front idler assembly (47378990) is known to fit:

  • CASE CT420
  • CASE CT440
  • CASE CT445
  • CASE CT450
  • CASE TR 270
  • CASE TR 310
  • CASE TR 320
  • CASE TR 340
  • CASE TV 380
  • CASE TV 450

Case Undercarriage

These Case single flange idler assemblies are made to original specifications and produced with high quality double lip seals to lock dirt and debris out and lock the lubrication in for long lasting service for your machine.