Front idler group (undercarriage), replacement for CAT 239-4386, for Caterpillar 320D / 320D2 / 323D excavators. Guides the track chain and sets its tension. Supplied matched by part number.
Nameplate, OEM number and working conditions — checked against your machine, confirmed in writing before you pay.
Photos and video of the actual part, packed and labelled, before it leaves. What you see is what ships.
Send the hour-meter reading and we log the service interval — you get a message before the next one is due.
Nothing leaves Xi’an until you reply "ok". You approve, then we ship — not the other way round.
| MOQ | 1 Piece |
| Type | Front Idler Group (undercarriage) |
| Position | Front idler |
| Shipping | Rail 25-40 days / Sea / Air |
| Warranty | 3-12 Months |
| OEM number | 239-4386 |
| Application | CAT 320D / 320D2 / 323D |
Front idler group for the undercarriage of Caterpillar 320D / 320D2 / 323D excavators, replacement for CAT 239-4386. The idler guides the track chain and, with the recoil/tensioner, keeps the chain at the correct tension.
Idlers wear at the running surface and the shaft/bushings; replace when the flange wears thin, the idler wobbles, or the track no longer holds tension. Sold complete as a group, matched to the original part number.
Send the part number and machine model, or a photo of the undercarriage, and we confirm the correct group before you pay.
| Part Number | Machine Model | Type | Availability |
|---|---|---|---|
| 239-4386 | 320D / 320D2 / 323D | Replacement part | In Stock |
| 2394386 | 320D / 320D2 / 323D | Replacement part | In Stock |
This is a partial reference. Send your part number or machine model — we source and confirm it for you.
| Original (OEM) | 239-4386 / 2394386 |
| Brand No. | 239-4386 |
| Cross Reference | 239-4386 |
| Cross Reference | 2394386 |
| Concern | Impact | How we help |
|---|---|---|
| Wrong part model | Installation failure, extra cost | Confirmed by number, model and photos before shipment. |
| Unclear part number | Delays in sourcing | We identify the part from whatever info you have. |
| Poor quality | Downtime and complaints | Stable replacement elements; every unit checked. |
| Slow response | Project delays | Reply within 24 hours. |
| Many suppliers | Complex procurement, higher cost | Wide coverage, mixed orders from one source. |
| Shipping risk | Damage or late arrival | Export packing and the right shipping method. |
| High MOQ | Financial risk | Flexible quantity — start small. |
| No after-sales | Problems unresolved | We stay in touch after delivery. |
Send part number, machine model or photo — whatever you have.
We confirm the correct part from your number, model and photos.
You receive price, availability and specifications.
We arrange preparation on the agreed terms.
We check the parts and send photos before dispatch.
Express, air, rail or sea — with tracking after dispatch.
We supply OEM-supplier, branded and quality aftermarket replacement parts built to match OEM specifications. OEM numbers are shown for reference only.
Contact us to confirm machine compatibility — send your machine model and serial number, and we verify fitment before you pay.
3-12 months depending on part type; common-rail injectors 3-6 months subject to correct installation.
Parts are sourced to order and consolidated in Xi\u2019an; consolidation and dispatch usually 2-5 business days depending on availability, then 7-15 days to most countries via DHL / FedEx / sea / rail. Confirmed per line in the quotation.
Yes — we send photos and videos of your part for approval before dispatch.
