Kobelco SK240-12 · Cylinder Hydraulic Piping (Boom Cylinder) · 24 part numbers
No illustration for this section
The Cylinder Hydraulic Piping (Boom Cylinder) 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.
This page lists all 24 part numbers in the Kobelco SK240-12 Cylinder Hydraulic Piping (Boom Cylinder). The Ref. column mirrors the callout numbers on the illustration, so a part can be ordered straight from the drawing. Every entry is a genuine Kobelco part number, confirmed against the serial range before we quote.
| Ref. | Part No. | Description | Qty / Assy |
|---|---|---|---|
| YN42H00798F1 | HYD LINES, CYLINDER | ||
| 1 | YN42H00780F1 | HYD LINES, CYLINDER | 1 |
| 2 | YN42H00669F1 | HYD LINES, CYLINDER | 1 |
| 3 | YN42H00671F1 | HYD LINES, CYLINDER | 1 |
| 1 | YN42H03516P1 | TUBE | 1 |
| 2 | YN42H02615P1 | BAND | 1 |
| 3 | YN42H03294P1 | BAND | 1 |
| 4 | YX42H01074P2 | BAND | 2 |
| 5 | YY42H01184P1 | CLAMP | 2 |
| 6 | ZH22Z04000 | CONNECTOR | 2 |
| 7 | ZG91S02000 | NIPPLE, GREASE | 2 |
| 8 | ZD12P02600 | O RING - | 1 |
| 9 | ZD12A01600 | O RING - | 1 |
| 10 | ZS18C10030 | CAPSCREW | 4 |
| 11 | ZS18C12065 | CAPSCREW | 2 |
| 12 | ZS28C10030 | CAPSCREW | 4 |
| 13 | ZW26X10000 | LOCK WASHER | 4 |
| 14 | ZW16H12000 | WASHER | 2 |
| 1 | YN42H03517P1 | TUBE | 1 |
| 1 | YN42H02616P1 | TUBE | 1 |
| 2 | YN42H03299P1 | TUBE | 1 |
| 3 | ZD12P03400 | O RING - | 2 |
| 4 | ZD12A02100 | O RING - | 2 |
| 5 | ZS28C12040 | CAPSCREW | 8 |
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.
Read as a dataset, the 24 part numbers spread across 11 number series (YN42H, ZD12P, ZD12A being the biggest) In practice that means repeated items such as hyd, lines, cylinder and 6 hardware positions.
If you are quoting from this group, start with: ZS28C12040 (capscrew, ×8 per assembly); ZS18C10030 (capscrew, ×4 per assembly); ZS28C10030 (capscrew, ×4 per assembly). The full list follows below.
Every hydraulic item we quote is declared by condition: genuine, ordered through original supply channels, or a quality OEM alternative. The declaration appears on the quotation itself, never buried in an invoice, so you know exactly what you are fitting before you commit.
The Cylinder Hydraulic Piping (Boom Cylinder) group on the Kobelco SK240-12 contains 24 separately orderable part numbers, all listed in the table below with the quantity fitted per assembly. Every number in the table is a real Kobelco part number taken from the machine's own parts catalogue, not a generic cross-reference.
Slow or drifting functions, a circuit that weakens as the oil warms, noise under load, and external leakage at joints are the usual reports. Pressure testing points to the circuit; the drawing callouts then point to the part. The practical first number to ask for in this group is ZS28C12040.
Usually yes — the callout numbers on the drawing map directly to the Ref. column in the table. If your machine differs by serial range, send a photo of the part and we will confirm before quoting.
Yes — send the serial and the part number together; where a position changed across the run we flag it and quote the number that matches your build.
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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.