Cummins QSK50 parts in stock: injector, fuel pump, cylinder head, piston and turbocharger part numbers
G Service Power holds genuine Cummins QSK50 parts in UK stock: MCRS fuel injector 2867147 (In stock, £2,250); turbocharger 3799121 (1 unit, price on request); cylinder head assembly 4313887 (16 units, price on request); viscous vibration damper 3628649 (1 unit, price on request); and 36 more part numbers. This page gives 44 QSK50 part numbers and 40 are marked In stock, with the quantity and, where shown, the price each; the rest are turbocharger reference numbers that we can be asked about. Send us your part number and engine serial number and we confirm stock and price. Call +44 7951 632187.
In stock, from our stock list of ; turbocharger rows not marked In stock are reference numbers. Prices in pounds sterling, ex works UK, excluding VAT. G Service Power is an independent supplier, not a Cummins distributor.
QSK50 injector and fuel pump part numbers
| Part number | Component | Fits | Related numbers | Availability |
|---|---|---|---|---|
| 2867147 | MCRS fuel injector (16 per engine) | QSK50 Tier 2 (CM850 and CM2150) | In stock: 2867147, Brand New · £2,250 WhatsApp | |
| 5542883 | High-pressure fuel pump, MCRS (Bosch CP9) | QSK50, per our stock list |
| In stock: 1 unit · £16,000 each WhatsApp Ask by email |
| 5540246 | Fuel pump | QSK50-M / QSK50-DM (marine), per our stock list |
| In stock: 1 unit · price on request WhatsApp Ask by email |
| 5471833 | Fuel injector kit | QSK50, per our stock list |
| In stock: 16 units · £2,500 each WhatsApp Ask by email |
| 3647610 | Cover plate Our stock list calls this an injector holder. Cummins names the number a cover plate. | QSK50, per our stock list | In stock: 16 units · £300 each WhatsApp Ask by email |
Every QSK50 has the modular common rail system (MCRS) with a Bosch high-pressure pump. Pump 5542883, the Bosch CP9, is on our stock list for the QSK50; a Bosch distributor lists the same number for the QSK60. Fuel pump 5540246 is on our list for the marine QSK50-M and QSK50-DM. Send the number on your pump and your ESN and we confirm which pump your engine takes.
The Cummins QSK50 Tier 2 injector is 2867147, shared with the QSK19 and QSK38. An engine takes 16. It does not fit the QSK60, which takes its own injectors. Fuel injector kit 5471833 and cover plate 3647610 (an injector holder on our list) are on our stock list for the QSK50, which does not say which build each one fits: send your ESN and the number on your old part.
QSK50 turbocharger and aftercooler part numbers
| Part number | Component | Fits | Related numbers | Availability |
|---|---|---|---|---|
| 3799121 | Turbocharger | QSK50-M / QSK50-DM (marine), per our stock list | In stock: 1 unit · price on request WhatsApp Ask by email | |
| 5543593 | Aftercooler | QSK50-M / QSK50-DM (marine), per our stock list |
| In stock: 2 units · £1,500 each WhatsApp Ask by email |
| 4955904 | Turbocharger, Holset HX83 / HE800FG Sellers name this unit HX83, HX82 or HE800FG. The part numbers agree. | QSK50 MCRS (CM850 and CM2150) |
| Ask for stock and price WhatsApp Ask by email |
| 4955302 | Turbocharger, Holset HX82 | QSK50 MCRS (CM850 and CM2150) |
| Ask for stock and price WhatsApp Ask by email |
| 4956141 | Turbocharger, Holset HX83 | QSK50; build to confirm by ESN |
| Ask for stock and price WhatsApp Ask by email |
| 2881768 | Turbocharger kit, Holset HX83 | QSK50; build to confirm by ESN |
| Ask for stock and price WhatsApp Ask by email |
Turbocharger 3799121 and aftercooler 5543593 are marked In stock: they are parts we hold, on our list for the marine QSK50-M and QSK50-DM. The other rows are reference numbers, not stock: Holset turbochargers listed for the QSK50, each with the numbers related to it. We can be asked about any of them.
The QSK50 uses Holset HX82 and HX83 turbochargers, single-stage or two-stage depending on the rating. The right number depends on the rating, so send the number on your turbocharger's dataplate and your ESN.
QSK50 cylinder head, rocker lever and camshaft part numbers
| Part number | Component | Fits | Related numbers | Availability |
|---|---|---|---|---|
| 4313887 | Cylinder head assembly (16 per engine) | QSK50 MCRS (CM850 and CM2150) |
| In stock: 16 units · price on request WhatsApp Ask by email |
| 3086362 | Valve crosshead (32 per engine) | QSK50; shared with K38 and K50 |
| In stock: 32 units · £240 each WhatsApp Ask by email |
| 3649935 | Cylinder head | QSK50, per our stock list |
| In stock: 16 units · £2,000 each WhatsApp Ask by email |
| 5539186 | Rocker lever housing | QSK50, per our stock list | In stock: 16 units · £600 each WhatsApp Ask by email | |
| 5539184 | Rocker lever housing | QSK50, per our stock list | In stock: 16 units · £300 each WhatsApp Ask by email | |
| 4924611 | Rocker lever spacer Our stock list calls this a rocker. Cummins names the number a rocker lever spacer. | QSK50, per our stock list | In stock: 16 units · £600 each WhatsApp Ask by email | |
| 6377067 | Rocker lever | QSK50, per our stock list |
| In stock: 16 units · £600 each WhatsApp Ask by email |
| 6377069 | Rocker lever | QSK50, per our stock list |
| In stock: 16 units · £600 each WhatsApp Ask by email |
| 4917449 | Valve cover | QSK50, per our stock list | In stock: 16 units · £300 each WhatsApp Ask by email | |
| 3057139 | Push rod | QSK50, per our stock list |
| In stock: 32 units · £120 each WhatsApp Ask by email |
| 3641071 | Camshaft | QSK50-M / QSK50-DM (marine), per our stock list | In stock: 1 unit · price on request WhatsApp Ask by email | |
| 3641072 | Camshaft | QSK50-M / QSK50-DM (marine), per our stock list | In stock: 1 unit · price on request WhatsApp Ask by email | |
| 206747 | Camshaft gear | QSK50-M / QSK50-DM (marine), per our stock list | In stock: 1 unit · price on request WhatsApp Ask by email | |
| 3641685 | Camshaft gear | QSK50-M / QSK50-DM (marine), per our stock list | In stock: 1 unit · price on request WhatsApp Ask by email |
The QSK50 has 16 separate cylinder heads. Head assembly 4313887 is listed for CM850 and CM2150 engines and belongs to the same family as the later K38 and K50 heads. Valve crosshead 3086362 is shared with the K38 and K50.
Cylinder head 3649935 and the rocker levers, rocker lever housings, valve cover and push rod are on our stock list for the QSK50; the camshafts and camshaft gears are on our list for the marine QSK50-M and QSK50-DM. The lists do not say which build each one fits, so send your ESN and the number on your old part and we confirm the match.
QSK50 piston, piston ring, connecting rod, liner and vibration damper part numbers
| Part number | Component | Fits | Related numbers | Availability |
|---|---|---|---|---|
| 3628649 | Viscous vibration damper Sources do not say whether an engine takes one or both: confirm by ESN. | QSK50 CM850, CM2150 and CM2350 |
| In stock: 1 unit · price on request WhatsApp Ask by email |
| 3628650 | Viscous vibration damper Sources do not say whether an engine takes one or both: confirm by ESN. | QSK50 CM850, CM2150 and CM2350 |
| In stock: 1 unit · price on request WhatsApp Ask by email |
| 4099041 | Piston cooling nozzle (8 per engine) | QSK50 CM850, CM2150 and CM2350 | In stock: 8 units · price on request WhatsApp Ask by email | |
| 5373038 | Piston | QSK50, per our stock list | In stock: 16 units · £1,500 each WhatsApp Ask by email | |
| 4910465 | Piston | QSK50-M / QSK50-DM (marine), per our stock list | In stock: 12 units · price on request WhatsApp Ask by email | |
| 2891820 | Piston ring, top | QSK50, per our stock list | In stock: 16 units · £120 each WhatsApp Ask by email | |
| 2891821 | Piston ring, intermediate | QSK50, per our stock list | In stock: 16 units · £120 each WhatsApp Ask by email | |
| 4322612 | Piston ring, oil | QSK50, per our stock list | In stock: 15 units · £120 each WhatsApp Ask by email | |
| 3632169 | Connecting rod | QSK50, per our stock list | In stock: 16 units · £1,000 each WhatsApp Ask by email | |
| 3632225 | Connecting rod | QSK50-M / QSK50-DM (marine), per our stock list |
| In stock: 16 units · price on request WhatsApp Ask by email |
| 4916452 | Cylinder liner | QSK50-M / QSK50-DM (marine), per our stock list | In stock: 12 units · price on request WhatsApp Ask by email |
The QSK50 has ductile iron pistons, where the KTA50 has aluminium ones, so KTA50 pistons do not carry across. The pistons, the top, intermediate and oil piston rings, the connecting rods and the cylinder liner are on our stock lists, and the Fits column shows which are from our list for the marine QSK50-M and QSK50-DM. Send your ESN and the number on your old part and we confirm the match.
Vibration dampers 3628649 and 3628650 and piston cooling nozzle 4099041 are listed for CM850, CM2150 and CM2350 engines. Our sources do not say whether an engine takes one damper or both, so confirm by ESN.
QSK50 water pump, oil pump and oil cooler part numbers
| Part number | Component | Fits | Related numbers | Availability |
|---|---|---|---|---|
| 5473148 | Water pump kit | QSK50, per our stock list |
| In stock: 1 unit · £3,500 each WhatsApp Ask by email |
| 5376264 | Water pump | QSK50-M / QSK50-DM (marine), per our stock list | In stock: 1 unit · price on request WhatsApp Ask by email | |
| 4924739 | Lubricating oil pump | QSK50-M / QSK50-DM (marine), per our stock list | In stock: 1 unit · price on request WhatsApp Ask by email | |
| 4916621 | Oil cooler core | QSK50-M / QSK50-DM (marine), per our stock list | In stock: 4 units · price on request WhatsApp Ask by email |
Water pump kit 5473148 is on our stock list for the QSK50. Water pump 5376264, lubricating oil pump 4924739 and oil cooler core 4916621 are on our list for the marine QSK50-M and QSK50-DM. Send the number on your old part and your ESN and we confirm the match.
QSK50 ECM, wiring harness and electrical part numbers
| Part number | Component | Fits | Related numbers | Availability |
|---|---|---|---|---|
| 4995444 | Engine control module (ECM) | QSK50-M / QSK50-DM (marine), per our stock list | In stock: 3 units · price on request WhatsApp Ask by email | |
| 4327234 | Position sensor | QSK50-M / QSK50-DM (marine), per our stock list |
| In stock: 1 unit · price on request WhatsApp Ask by email |
| 5540528 | Engine wiring harness | QSK50, per our stock list | In stock: 1 unit · £25,000 each WhatsApp Ask by email | |
| 4094998 | Battery charging alternator, 24 V 55 A | QSK50; shared with K38 and K50 |
| In stock: 4094998, New surplus · £99.99 WhatsApp |
ECM 4995444 and position sensor 4327234 are on our list for the marine QSK50-M and QSK50-DM, and engine wiring harness 5540528 is on our stock list for the QSK50. An ECM is loaded with a calibration for one engine, so always send your ESN and the number on your old module.
QSK50 parts with photographs and a product page
These QSK50 parts have a product page of their own, with photographs of the actual item and the price today.
QSK50 MCRS Fuel Injector (Cummins version) 2867147 Brand New · In stock £2,250 ex works UK, excl. VAT
QSK50 parts we hold
- Engine
- Cummins QSK50, V16
- Displacement
- 50.3 litres
- Fuel system
- MCRS common rail
- Control modules
- CM850, CM2150, CM2350
- In UK stock
- 40 part numbers
- Condition
- New, new surplus, used
- Prices
- Ex works UK, excl. VAT
- Dispatch
- Worldwide
We hold genuine Cummins parts for the QSK50 in the United Kingdom, and the tables above list them by part number: injectors, fuel pumps and cover plate; turbocharger and aftercooler; cylinder heads, rocker levers, rocker lever housings, camshafts and camshaft gears; pistons, piston rings, connecting rods, cylinder liner and vibration dampers; water pumps, oil pump and oil cooler core; ECM, position sensor and engine wiring harness. Most are new or new surplus, which means genuine parts bought for a project or a fleet that have not been run in operational service.
Every row marked In stock is a part we hold. Quantities and prices in pounds sterling are from our stock list of 6 November 2026. Rows whose fitment reads "QSK50-M / QSK50-DM (marine)" are from our list for the marine engine. That list gives quantities without prices, so where a row has no price, ask and we quote. The only rows that are not in stock are in the : they are reference numbers, and we can be asked about any of them. Send any number with your engine serial number and we confirm stock, price and fitment.
Which machines use the Cummins QSK50
Cummins rates the QSK50 from 1,400 to 2,000 hp for mining excavators, loaders and haul trucks. It is a 50.3 litre V16 with a 159 mm bore and stroke, and it also drives generator sets and drilling, rail and marine installations.
In Komatsu excavators the 16-cylinder SDA16V159 and SSDA16V159 engines match the QSK50 in cylinder count, bore and rating. The PC3400-11 has one, at 1,600 hp, and the diesel PC7000-11 has two, at 1,675 hp each. Komatsu does not print the Cummins model name for these engines, so confirm with the engine serial number.
The 12-cylinder SDA12V159 in the Komatsu PC5500 is not a QSK50. Cummins generator sets from 1,400 to 1,675 kVA, such as the C1400 D5 and C1675 D5, have the mechanical KTA50 and not the QSK50.
QSK50 and KTA50: which parts are shared
The QSK50 is the electronic successor to the KTA50, with the same 159 mm bore and stroke. Some parts are shared with the K-series: valve crosshead 3086362 on this page is also a K38 and K50 part. The fuel system, pistons and turbochargers are not shared: the QSK50 is common rail with a Bosch pump and iron pistons, and the KTA50 is mechanical with PT injectors and aluminium pistons.
Catalogues that put both engines on one page often label KTA50 parts as QSK50. Give us your ESN and we check which engine a number really belongs to.
How to buy QSK50 parts from G Service Power
- Give us the part number and your ESN by phone, WhatsApp or email. A photo of the label on the part or of the engine dataplate helps.
- We tell you whether we hold it, its condition (new, new surplus or used) and the price, ex works UK.
- We quote freight to your port, airport or site, and prepare export packing and customs paperwork.
- Parts in stock are dispatched the next working day.
We supply parts only. We do not rebuild or repair engines.
Frequently asked questions
Are all the Cummins QSK50 part numbers on this page in stock?
All except some turbocharger numbers. Every row marked In stock is a part G Service Power holds, from its stock list of 6 November 2026. The turbocharger rows not marked In stock are reference numbers: send the one you need with your engine serial number and we tell you whether we can supply it.
What is the Cummins QSK50 fuel pump part number?
The Cummins QSK50 fuel pumps on G Service Power's stock list are 5542883, the Bosch CP9 high-pressure pump of the MCRS system, and fuel pump 5540246, listed for the marine QSK50-M and QSK50-DM. The right number depends on the engine build, so send your engine serial number and the number on your old pump.
What is the Cummins QSK50 injector part number?
The Cummins QSK50 injector is 2867147 for Tier 2 engines (CM850 and CM2150). The same injector fits the QSK19 and QSK38, and an engine takes 16. G Service Power holds it in stock, with fuel injector kit 5471833, which is on its stock list for the QSK50.
What turbocharger does a Cummins QSK50 use?
The Cummins QSK50 uses Holset HX82 and HX83 turbochargers, single-stage or two-stage depending on the rating. The QSK50 turbocharger on G Service Power's stock list is 3799121, listed for the marine QSK50-M and QSK50-DM; the other turbocharger rows on this page are reference numbers. The right number depends on the engine build, so send your engine serial number and the number on your turbocharger's dataplate.
What is the Cummins QSK50 cylinder head part number?
The Cummins QSK50 cylinder heads G Service Power holds are 4313887, a cylinder head assembly listed for CM850 and CM2150 engines, and cylinder head 3649935, which is on its stock list for the QSK50. A QSK50 has 16 cylinder heads, so send your engine serial number and the number on your old head and we confirm the match.
Which of these QSK50 parts are for the marine QSK50-M and QSK50-DM?
The rows whose fitment reads "QSK50-M / QSK50-DM (marine)" are on G Service Power's list for the marine engine. They include turbocharger 3799121, fuel pump 5540246, ECM 4995444, camshafts 3641071 and 3641072, piston 4910465, connecting rod 3632225 and cylinder liner 4916452. That list gives quantities without prices, so these parts are priced on request.
Do KTA50 parts fit a QSK50?
Some KTA50 parts fit a QSK50: valve crosshead 3086362, for example, is shared with the K38 and K50. Fuel pumps, injectors, pistons and turbochargers are not shared.
Which machines use the Cummins QSK50?
Cummins rates the QSK50 from 1,400 to 2,000 hp for mining excavators, loaders and haul trucks. Komatsu's PC3400-11 and diesel PC7000-11 excavators have 16-cylinder SDA16V159 and SSDA16V159 engines that match the QSK50 in bore, cylinder count and rating. The QSK50 also drives generator sets, drilling rigs, locomotives and vessels.
Is there an HPI version of the QSK50?
No source we found shows an HPI version of the QSK50. Every QSK50 build in the Cummins and seller data is MCRS common rail, on CM850, CM2150 or CM2350 control modules.
Which Cummins part numbers supersede, or are superseded by, the QSK50 parts in stock?
On this page: 5542883 supersedes 5539096, 5375499 and 4334416; 5540246 supersedes 5471755 and 4390205; 5471833 supersedes 5579134; 5543593 supersedes 3641078 and 4101030; 4313887 supersedes 3646322; 4313887 is superseded by 5581146; 3086362 supersedes 3048620, 3033687, 3801445 and 205121; 3649935 is superseded by 5581144; 6377067 supersedes 3053477; 6377069 supersedes 3053476; 3057139 supersedes 205492; 3628649 supersedes 3626721 and 3032731; 3628650 supersedes 3626722 and 3032732; 3632225 supersedes 3630024, 3628824, 3626494, 3043910 and 3014452; 5473148 supersedes 4352353, 4352354, 4309350 and 4309351; 4327234 supersedes 2872354 and 3079604; 4094998 is superseded by 4381503. A supersession is Cummins replacing one part number with another for the same part, so if your parts book or your old part carries either number of a pair, the part we hold is the one to ask about. Send your engine serial number and we confirm the match before dispatch.
Does G Service Power have Cummins QSK50 parts in stock?
Yes. In stock on this page: 2867147, 5542883, 5540246, 5471833, 3647610, 3799121, 5543593, 4313887, 3086362, 3649935, 5539186, 5539184, 4924611, 6377067… (G Service Power's stock list of 6 November 2026). Each is shown with the quantity held and, where we publish it, the price each. Stock changes as parts sell, so send the number and the quantity you need with your engine serial number and we confirm before you order. For any other number, call +44 7951 632187 or send it by WhatsApp, and we will tell you whether we can supply it.
Are G Service Power's Cummins QSK50 parts genuine?
Yes. G Service Power sells genuine Cummins parts, including parts made by Cummins' own suppliers such as Bosch and Holset. Most are new or new surplus: new surplus means a genuine part bought for a project or a fleet that has not been run in operational service. We give the condition of each part when we quote, and a part with its own product page states it there. G Service Power is an independent supplier, not a Cummins distributor.
How do I make sure a part number fits my QSK50?
Read the engine serial number (ESN) and the CPL from the engine dataplate, and the number from the part you are replacing. Send us all three. Cummins changes part numbers at serial number breaks, so the ESN is what settles fitment, and we confirm it before dispatch.
Does G Service Power ship QSK50 parts to mine sites abroad?
Yes. We are based in the UK and ship worldwide, with export packing and the paperwork for customs. Prices are ex works UK, excluding VAT, and freight is quoted to your port, airport or site.
More Cummins part number guides
- Cummins QSK60 parts Every QSK60 part number we hold, by group: fuel system, turbocharger, cylinder heads and camshafts, pistons, liners and crankshaft, cooling, ECM.
Every part number in this guide is a part G Service Power holds, from its stock list of , except the turbocharger numbers not marked In stock: those are references, checked against Cummins parts catalogue data and independent seller and supplier catalogues on , and we can be asked about any of them. Quantities and prices change as parts sell, so confirm before you order. A fitment given as "per our stock list" rests on that list alone. Cummins changes numbers at engine serial number breaks, so quote your engine serial number (ESN) and the number on your existing part, and we confirm fitment before dispatch. G Service Power is an independent supplier and is not a Cummins distributor.