The Komatsu PC200 and PC200LC use two front idlers that look almost the same. You don't need to know your machine's series to order the right one. Count the bolt holes on the mounting brackets: two or three. That's the same question our parts team asks every customer, and we stock both idlers in the ITP brand and Berco.
The front idler sits at the front of each track frame. It guides the track chain and, with the track adjuster, keeps the track at the right tension. When it wears out, you need the right replacement the first time. An idler with the wrong bolt pattern won't mount, and a return costs you days of downtime. New to undercarriage parts? Start with Undercarriage 101: The Parts, What They Do, and When to Replace Them.
The Two Idlers
Both idlers fit the PC200 family and do the same job. The difference is the mounting brackets on each side, where the idler bolts to the machine.
Three-bolt idler: KM3299/20Y-30-00640/641. Each mounting bracket has three bolt holes in a row.
Two-bolt idler: KM3299. Each side has two separate bracket pieces with one bolt hole in each.
How to Check Yours
- Look at the brackets on either side of your old idler.
- Count the bolt holes on one side. Three in a row is the three-bolt idler. One hole in each of two bracket pieces is the two-bolt idler.
- Can't get a clear look? Send us your model and serial number and we'll confirm it for you.
Signs Your Front Idler Is Worn
- The tread surface or center flange is worn down or has flat spots
- Oil is leaking from the seals at the shaft
- The idler wobbles or has play when the track moves
- The track keeps coming off or won't hold tension
If you see any of these, check the rest of the undercarriage too. A worn idler usually means the chain and rollers are close behind.
Front Idler Part Numbers
| Idler | Bolt holes per side | ITP part number | Komatsu OEM numbers | Other cross-reference numbers |
|---|---|---|---|---|
| Two-bolt front idler | 2 | KM3299 | 20Y-30-00320, 20Y-30-00321, 20Y-30-00322, 20Y-30-00323, 20Y-30-00330, 20Y-30-08060, 20Y-30-08070 | UX084K8E |
| Three-bolt front idler | 3 | KM3299/ 20Y-30-00640/641 |
20Y-30-00640, 20Y-30-00641 |
Everything Else for the PC200
The front idler is one piece of the undercarriage. Here's the full set we carry for the PC200 and PC200LC, Dash 5 through Dash 8.
| Part | ITP part number | Komatsu OEM numbers | Other cross-reference numbers |
|---|---|---|---|
| Track chain, PC200 (45 links) | KM2561/45 | 20Y-32-00012, 20Y-32-00014, 20Y-32-00030, 20Y-32-00210, 20Y-32-00300, 20Y-32-00410, 20Y-32-00520, 20Y-32-K1171, 20Y-30-00013, 20Y-30-07040 | F124540, 790098200 |
| Track chain, PC200LC (49 links) | KM2561/49 | 20Y-32-00023, 20Y-32-00310, 20Y-32-00340, 20Y-32-00420 | 14530361, 14658430, 1082-02170, 099-0046, 093-1963, 920850, AT311628, 81EM-27010 |
| Carrier roller, Dash 5-6 | KM1640 | 204-30-00020, 205-30-00040, 205-30-00045, 205-30-00190, 20Y-30-00021, 20Y-30-00022, 20Y-30-00190, 20Y-30-08300 | 11029453, 12168856, 81EM-10030-01, 81EM-10031 |
| Carrier roller, Dash 6-7 | KM3542 | 20Y-30-08050, 22U-30-00020, 22U-30-00021, 22U-30-00022 | |
| Carrier roller, Dash 8 | KM4182 | 20Y-30-00481, 20Y-30-00670, 20Y-30-00671, 20Y-30-08091, 20Y-30-08891 | |
| Track roller, single flange | KM1428 | 20Y-30-00012, 20Y-30-00014, 20Y-30-00016, 20Y-30-00018, 20Y-30-00019, 20Y-30-00750, 20Y-30-07300, 20Y-30-08020, 20Y-30-08021 | 3012780, 81EM-10020 |
| Sprocket, 21 tooth, Dash 5-8 | KM1501 | 20Y-27-11581, 20Y-27-11582, 20Y-27-11583, 20Y-27-77110, 20Y-27-K1110 | |
| Track shoe, 600 mm | KM783/600 | 14260902, 10000341, 093-1948, 093-1949, 099-5112, 5608111, 5609122, 75259973, 81Q6-24530, FF850446, TH102377, 2273-6040D1 | |
| Track shoe, 700 mm | KM783/700 | 20Y-32-31310 | 3380417H1, 71434239, 10488028, 2273-6040D2 |
| Track shoe, 750 mm | KM783/750 | 14260903, 10000342, 12202237, 5608112, 5609123 | |
| Track shoe, 800 mm | KM783/800 | 20Y-32-31320 | 093-1950, 095-7123, 75259974, 209216, TH102496, 2273-6040D3 |
Get the Right Idler
We stock both PC200 front idlers in the ITP brand and Berco, along with the rest of the PC200 undercarriage and matching hardware. ITP dealers can order online through the dealer portal. Everyone else, send us your model and serial number and we'll confirm fitment and quote it.
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Industrial Tractor Parts is an independent aftermarket parts distributor. Komatsu and other manufacturer names and part numbers are trademarks of their respective owners and are used for identification purposes only. ITP is not affiliated with or endorsed by these manufacturers.
