Kobelco SK240-12 · 2.94M Arm (Rock Spec, Hydraulic Breaker, With Lock Guard For Under-Plate Reinforcement) · 10 part numbers
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The 2.94M Arm (Rock Spec, Hydraulic Breaker, With Lock Guard For Under-Plate Reinforcement) is listed without an exploded view in the SK240-12 catalogue — the parts table below is the authoritative reference, and every part number is confirmed against your machine serial before we quote.
Every part number in the Kobelco SK240-12 2.94M Arm (Rock Spec, Hydraulic Breaker, With Lock Guard For Under-Plate Reinforcement) is listed here — 10 of them, with quantities. Take the callout number from the drawing and match it in the Ref. column below. The list comes straight from the Kobelco SK240-12 catalogue for this machine family.
| Ref. | Part No. | Description | Qty / Assy |
|---|---|---|---|
| YN12B20135F1 | ARM, 2.94M | ||
| 1 | YN12B20136F1 | ARM | 1 |
| 1 1B - | YN12B11184P1 | BUSHING | 2 |
| 1 1C - | YN12B02404P1 | BUSHING | 2 |
| 1 1D - | YN12B11831P1 | BUSHING | 2 |
| 1 2A - | YN12B21219P1 | BLOCK, TAPPED | 2 |
| 1 2B - | YN02B11189P1 | BLOCK, TAPPED | 4 |
| 2 | 2445R220D4 | SEAL, DUST | 2 |
| 3 | 2445R220D3 | SEAL, DUST | 2 |
| 4 | 2445R138D8 | SEAL, DUST | 2 |
Kobelco SK240-12 excavator part numbers, taken from the machine's own parts catalogue. Items shared with neighbouring machine generations are confirmed from your model plate before quoting.
The 10 entries group into 3 distinct number series, led by YN12B, 2445R. In practice that means repeated items such as bushing, seal, dust and 3 seal and O-ring positions.
If you are quoting from this group, start with: YN02B11189P1 (block, tapped, ×4 per assembly); YN12B11184P1 (bushing, ×2 per assembly); YN12B02404P1 (bushing, ×2 per assembly). The full list follows below.
Send us the Kobelco SK240-12 serial number together with the part number or the symptom you are chasing. We confirm fitment from the serial range before quoting, and mixed orders are consolidated into a single shipment — a set of seals does not travel in its own parcel.
Hydraulic components are the heart of the Kobelco SK240-12: main pump delivery, swing and travel drive, control valve sections and the lines and seals that connect them. When a circuit loses power, drifts under load, or runs noisy when warm, the fault is usually traced to one of the components in this group rather than to the machine as a whole.
Stocked items leave within one to two working days. Anything that needs ordering through supply channels is quoted with a lead time upfront, and mixed orders are consolidated for dispatch to 30+ countries. The practical first number to ask for in this group is YN02B11189P1.
It is the quantity fitted per assembly in the catalogue — useful when a job calls for more than one of the same part, such as O-rings fitted in a pack.
Both. Every quotation states the condition of each item — genuine through original supply channels, or a quality OEM alternative — so the choice is yours and it is documented.
Fuel Tank Mounting (Fuel Pump Mounting, Dust Cover, Remote Drain)
View Parts ListHydraulic Oil Tank Mounting (Right Camera Bracket)
View Parts ListPto Assembly (Hydraulic Pto)
View Parts ListSwing Motor Mounting
View Parts ListFilter List
View Parts ListUndercarriage Parts List
View Parts ListNut Part Numbers
View Parts ListBushing Part Numbers
View Parts ListKobelco SK240-12 workshop guide
Read the guideKobelco SK240-12 workshop guide
Read the guideKobelco SK240-12 workshop guide
Read the guideRepair guides written from our own workshop notes on the Kobelco SK240-12 — the same components listed on this page, with the failure patterns and part numbers we see most often from trade customers.