The Cummins 3645958 is a genuine piston for the QSK60 diesel engine. G Service Power has 16 units in UK stock, new surplus, at £1,500 each excl. VAT, ready for next-day worldwide dispatch. It supersedes 3640474 and 4066543. Call +44 7951 632187.
| Part number (MPN) | 3645958 |
|---|---|
| Manufacturer | Cummins |
| Product | QSK60 Piston |
| Component | Piston |
| Quantity available | 16 units |
| Stock list date | 6 November 2026 |
| Location | UK — ready to ship worldwide |
| Condition | New surplus |
| Availability | In stock — next-day worldwide dispatch |
| Price | £1,500 ex works UK, excl. VAT |
| Reference | SL-3645958 |
The Cummins 3645958 fits Cummins QSK60. Related part numbers: 3640474 (supersedes, Cummins), 4066543 (supersedes, Cummins) and 4309253 (kit / assembly number, Cummins).
| Make | Model | Notes |
|---|---|---|
| Cummins | QSK60 | QSK60, per our stock list |
| Part number | Brand | Relation | Notes |
|---|---|---|---|
| 3640474 | Cummins | Supersedes | |
| 4066543 | Cummins | Supersedes | |
| 4309253 | Cummins | Kit / assembly number |
Our stock list gives this number for the QSK60 without naming the build, so confirm it by your engine serial number. Fitment and interchange data is compiled from manufacturer catalogues and cross-reference listings and can change at engine serial-number breaks. Quote your engine serial number and existing part number when you call and we will confirm before dispatch.
Genuine Cummins piston for the QSK60 diesel engine, part number 3645958. The piston takes the force of combustion and passes it through the connecting rod to the crankshaft. The right piston depends on the build and its rating, so send the number on your old piston and your ESN and we confirm the match. An engine takes 16.
3645958 supersedes 3640474 and 4066543: Cummins replaced the older numbers with this one, so this is the part to ask for when your parts book or your old part carries one of them. Other numbers for this part: 4309253 (kit / assembly number). Our stock list gives this number for the QSK60 but not the build it fits, so send your engine serial number (ESN) and the number on your old part and we confirm the match.
Condition: new surplus, meaning a genuine part bought for a project or a fleet that has not been run in operational service. 16 units available at £1,500 each plus VAT. Please confirm the part number against your engine serial number before ordering. In UK stock — call +44 7951 632187 or message on WhatsApp for shipping and availability.
Compatibility: fits Cummins QSK60 — the full list of engines and interchangeable part numbers is on the . Confirm against your engine serial number before ordering, or call us and we will check it with you.
For sale from UK stock. Quote any of these references when you call.
| Part number | 3645958 |
|---|---|
| Engine model | Cummins QSK60 |