Kobelco SK240-12 · Cylinder Mounting (Boom Cylinder) · 41 part numbers
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The Cylinder Mounting (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 41 part numbers in the Kobelco SK240-12 Cylinder Mounting (Boom Cylinder). Callout numbers on the exploded view map one-to-one to the Ref. column in the table. All numbers are taken from the machine's own parts catalogue — nothing here is generic.
| Ref. | Part No. | Description | Qty / Assy |
|---|---|---|---|
| YN02B00807F1 | CYLINDER INSTAL | ||
| 1 | YN02B00811F1 | CYLINDER INSTAL | 1 |
| 2 | YN01V00151F2 | CYLINDER, BOOM | 2 |
| 1 | YN02B02457P1 | PIN | 2 |
| 2 | YN02B01721P1 | PIN | 1 |
| 3 | YN02B01108P1 | BOSS | 2 |
| 5 | HS18C16150G2 | CAPSCREW | 4 |
| 6 | ZN18C16013 | NUT | 8 |
| 8 | YN02B01417D1 | SHIM (2.0) | 6 |
| 9 | YN02B01109D1 | SHIM (0.5) | 1 |
| 10 | YN02B01109D2 | SHIM (0.9) | 1 |
| 11 | YN02B01109D4 | SHIM (1.6) | 1 |
| 12 | B16T0442D78 | SHIM (0.5) | 1 |
| 13 | B16T0442D77 | SHIM (0.9) | 1 |
| 14 | B16T0442D62 | SHIM (1.6) | 1 |
| 3 | YN01V00151S003 | CYLINDER HEAD | 1 |
| 4 | 2438U1106S17 | BUSHING | 1 |
| 5 | 2438U959S5 | RING, SNAP | 1 |
| 6 | YN01V00151S006 | RING, BUFFER | 1 |
| 7 | YN01V00151S007 | RING | 1 |
| 8 | 2438U959S8 | RING, BACK-UP | 1 |
| 9 | LP01V00008S009 | RING, WIPER | 1 |
| 10 | ZD12G11500 | O RING - | 1 |
| 11 | 2438U1105S12 | RING, BACK UP | 1 |
| 12 | ZS23C16075 | CAPSCREW | 12 |
| 13 | YN01V00151S013 | RING | 1 |
| 14 | YN01V00103S014 | SEAL | 1 |
| 15 | YN01V00151S015 | PISTON | 1 |
| 16 | 2438U1105S16 | RING ASSY | 1 |
| 17 | LQ01V00004S017 | RING, BACK UP | 2 |
| 19 | 2438U1105S18 | RING | 2 |
| 20 | 2438U999S21 | SETSCREW | 1 |
| 21 | 2436U330S16 | BALL | 1 |
| 22 | YN01V01109P1 | BUSHING | 4 |
| 23 | 2438U941S3 | SEAL, DUST | 4 |
| 24 | 2438U1105S17 | RING | 2 |
| YN01V00151R100 | REPAIR KIT | 1 | |
| YN01V00151R400 | REPAIR KIT | 1 | |
| YN01V00151R500 | REPAIR KIT | 1 | |
| YN01V00151R600 | SEAL KIT | 1 | |
| YN01V00151R700 | SEAL KIT | 1 |
Listed for the Kobelco SK240-12 excavator. Every number can be quoted on its own or as a complete set, and fitment is confirmed from your machine serial before we price it.
Read as a dataset, the 41 part numbers spread across 11 number series (YN01V, YN02B, 2438U being the biggest) The list is weighted toward repeated items such as ring, shim, kit and 4 hardware positions.
Three numbers worth noting first: ZS23C16075 (capscrew, ×12 per assembly); ZN18C16013 (nut, ×8 per assembly); YN02B01417D1 (shim (2.0), ×6 per assembly). The full list follows below.
For workshops planning a full hydraulic health check, the practical sequence is seals first, then wear items such as valve plates and bushings, and only then complete assemblies. The table below supports that sequence because every level of the breakdown is separately orderable.
Rebuild-at-component-level is the practical route for most Kobelco SK240-12 hydraulic assemblies. Wear shows up at predictable points — spool clearances, valve plates, bearing sets, seal packages — and those items are listed individually, so you can quote only what is worn instead of exchanging the complete unit.
Either. The complete Cylinder Mounting (Boom Cylinder) can be quoted as a set, or any single part number from the table — both are normal requests from our trade customers. On the Kobelco SK240-12, that usually comes back to ZS23C16075 (capscrew) in this group.
In most cases yes. The wear points on Kobelco SK240-12 hydraulic assemblies are individually replaceable and all carry their own part numbers in the table above, so a targeted repair can be quoted without exchanging the complete unit.
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.
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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.