Technical Dimensions
| Part # | PN 304-1878 |
|---|---|
| Tooth Count | |
| Bolt Hole Count | |
| Auxiliary Holes | |
| Outside Diameter | |
| Inside Diameter | |
| Dish Depth | |
| Flange Diameter | |
| Drive Configuration | |
| Mount Configuration | |
| Stamped Part # | |
| Pitch | |
| Weight | 63.0 lbs |
CAT 299D3 Front Idler | Part #304-1878
Regular Price
$586.25
x 1
PRODUCT SPECIFICATIONS
Construction & Features
| Durability | Heavy duty only |
|---|---|
| Fitment | Direct OEM match |
| Construction | Drop forged steel |
| Construction | Heat-treated hardening |
Frequently Asked Questions
Fitment, availability, fulfillment, and support for this product
What front idler fits the Cat 299D3?
This front idler is listed for the Cat 299D3 and matches OEM Part #304-1878. Before ordering, compare your machine make, model, serial number, and existing part number to confirm the correct undercarriage position and fitment.
What sprocket fits the Cat 299D3?
Matching drive sprocket options for the Cat 299D3 include <a href="/products/cat-299d3-sprocket">CAT 299D3 Sprocket | Part #304-1916</a>. When installing new rubber tracks, inspect sprockets for hooked, sharp, or uneven teeth because worn sprockets can shorten track life and damage the drive lugs.
What bottom rollers fit the Cat 299D3?
Matching bottom roller or track roller options for the Cat 299D3 include <a href="/products/cat-299d3-track-roller">CAT 299D3 Track Roller | Part #304-1890</a>. Replacing worn rollers before installing new rubber tracks helps keep the undercarriage aligned and reduces uneven wear across the track carcass.
What rear idler fits the Cat 299D3?
Matching rear idler options for the Cat 299D3 include <a href="/products/cat-299d3-rear-idler">CAT 299D3 Rear Idler | Part #304-1894</a>. A worn rear idler can contribute to poor track alignment, derailment, and premature edge wear, especially after new rubber tracks are installed.
What rubber tracks pair with this front idlers?
Matching rubber track options connected to this Cat 299D3 undercarriage setup include <a href="/products/cat-299d3-rubber-tracks">CAT 299D3 Rubber Tracks | 450x86x60 (Part #450X86BX60)</a>. If you are replacing this part, inspect the full undercarriage so the new component and rubber tracks wear evenly together.
Should I inspect the full undercarriage before replacing this Cat 299D3 part?
Yes. Sprockets, idlers, rollers, and rubber tracks wear together as a system. Before replacing this part for the Cat 299D3, inspect the full undercarriage for uneven wear, bearing play, hooked sprocket teeth, and track tension issues.
How do I confirm this product fits the Cat 299D3?
Confirm fitment by checking your machine make, model, serial number, and existing track size or OEM part number. For rubber tracks, verify width, pitch, and link count. For undercarriage parts, compare the part number, bolt pattern, tooth count, and machine position. You can also use the <a href="/pages/rubber-track-finder">TrackTECH Track Finder</a> or call <a href="tel:8508167898">(850) 816-7898</a> before ordering.
How fast does TrackTECH ship Cat 299D3 parts?
TrackTECH ships rubber tracks and undercarriage parts quickly across the Lower 48. Heavy items typically ship by freight, while smaller undercarriage parts may ship by parcel depending on warehouse availability. Review <a href="/pages/shipping">TrackTECH shipping information</a> or contact us before ordering if you need priority freight options.
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