Fuel system
Marine fuel injection parts: pumps, plungers, barrels and injectors
Injection equipment is where fuel quality and wear show up first. We source high-pressure pumps, plunger and barrel assemblies, delivery valves, injectors and nozzles, matched to the fuel you actually burn.
- Single unit or complete kit
- OEM and verified alternatives
- Certificate with shipment
- Quotation in one business day
Components
What we supply
Heavy fuel oil, low-sulphur distillate and biofuel blends all load the injection system differently. Nozzle and needle geometry has to suit the fuel, not just the engine. When you send an enquiry, tell us the fuel grade you run — it changes what we recommend.
| Component | Function | Supply notes |
|---|---|---|
| High-pressure fuel pump | Raises fuel to injection pressure | Complete unit or sub-assembly |
| Plunger & barrel | The metering pair, wears with contaminated fuel | Matched pair, lapped to micron clearance |
| Delivery valve | Holds residual pressure, prevents backflow | Non-return and suction valve types |
| Fuel injector | Atomises fuel, sets injection timing | Complete injector or nozzle-only supply |
| Nozzle & needle | Spray pattern and penetration | Matched to fuel grade and engine load |
| Fuel camshaft | Drives the pump plungers | Reconditioned or new |
| Booster / feed pump | Supplies low-pressure fuel to the HP pump | Gear or screw type |
Illustrative photo. Photo: rawpixel, CC0.
Specification
Typical range and what ships with the part
To quote accurately
What we need from you
- 1. Engine make and type
For example MAN B&W 6S50MC-C, or Wärtsilä 6L32. - 2. Part number
From the manual, the invoice, or stamped on the old part. - 3. Quantity and destination
One unit or a set, and the port or city for delivery. - 4. A photo, if the number is gone
The worn part, the nameplate or a drawing with dimensions.
Questions
Before you enquire
Can you match a nozzle to low-sulphur fuel?
Yes. Nozzle and needle geometry, and the opening pressure setting, are chosen for the fuel grade. Tell us what you burn and we will quote the matching specification rather than the standard HFO part.
Do you supply plunger and barrel as a pair?
Always as a matched pair. Supplying them separately breaks the lapped fit and is the most common cause of early leakage.
Can you test before shipping?
Yes. Injection equipment is pressure and leakage tested, and the test record ships with the unit. If you want a third-party inspection, we can arrange it.
Request a quotation
Tell us what you need
One part number is enough to start. Drawings, photos and nameplate details all help us confirm the match.
Tell us what you need
We reply by email, usually within one business day.