The Cummins 4313887 is a genuine cylinder head assembly for the QSK50 diesel engine. G Service Power has 16 units in UK stock, new surplus, with the price on request, ready for next-day worldwide dispatch. It supersedes 3646322. Cummins now lists 5581146 in its place. Call +44 7951 632187.
| Part number (MPN) | 4313887 |
|---|---|
| Manufacturer | Cummins |
| Product | QSK50 Cylinder Head Assembly |
| Component | Cylinder head assembly |
| 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 | P.O.A. — call for today's price |
| Reference | SL-4313887 |
The Cummins 4313887 fits Cummins QSK50. Related part numbers: 5581146 (superseded by, Cummins), 3646322 (supersedes, Cummins), 4313887RX (remanufactured number, Cummins), 3646323 (alternate part number, Cummins) and 5581141 (alternate part number, Cummins).
| Make | Model | Notes |
|---|---|---|
| Cummins | QSK50 | QSK50 MCRS (CM850 and CM2150) |
| Part number | Brand | Relation | Notes |
|---|---|---|---|
| 5581146 | Cummins | Superseded by | |
| 3646322 | Cummins | Supersedes | |
| 4313887RX | Cummins | Remanufactured number | |
| 3646323 | Cummins | Alternate part number | |
| 5581141 | Cummins | Alternate part 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 cylinder head assembly for the QSK50 diesel engine, part number 4313887. A cylinder head assembly is supplied built up and ready to fit, rather than as a bare casting. The QSK50 has 16 separate cylinder heads, so one damaged head can be replaced on its own; the number cast on your head and your ESN settle which one you need.
4313887 supersedes 3646322: Cummins replaced the older number with this one, so this is the part to ask for when your parts book or your old part carries the older number. Cummins has since superseded 4313887 with 5581146. The part in stock carries 4313887, and we confirm that it suits your engine before you order. Other numbers for this part: 4313887RX (remanufactured number), 3646323 (alternate part number), 5581141 (alternate part number).
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; price on request. 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 QSK50 — 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 | 4313887 |
|---|---|
| Engine model | Cummins QSK50 |