Bosch F00BL0P058 Injection Pump PF – Wärtsilä 20 Engine | Specifications, OEM References & Technical Details

If you are searching for a replacement Bosch F00BL0P058 injection pump for a Wärtsilä 20 engine — or verifying whether this is the correct part for your application — this guide covers the key technical details, OEM references, system type, and compatible engine information.

DieselDB stocks genuine Bosch injection pumps for marine and industrial Wärtsilä engines. Check availability →

Bosch Part Number Reference

Note: The F00BL0P058 is compatible with and supersedes the earlier F00BL0P057. If the F00BL0P057 is no longer available, the F00BL0P058 is the correct replacement. View F00BL0P057 →

OEM Cross Reference Numbers

The Bosch F00BL0P058 corresponds to the following OEM Wärtsilä part numbers, confirmed from the pump identification plate attached to the pump body:

How to read the pump identification plate: The metal identification plate riveted to the pump body carries the Bosch type formula (PFR1CY180/918), the Bosch part number (F00BL0P058), and the Wärtsilä IMO reference (IMO 16501). Always cross-check all three references when ordering a replacement pump to ensure correct fitment.

What Type of Injection System Is This?

The F00BL0P058 belongs to the Bosch PF (Pumpe-Feder / Individual Fuel Injection Pump) family — specifically the PFR series, designed for large-bore industrial and marine diesel engines.

Key characteristics of the Bosch PFR injection pump system:

• Individual single-cylinder injection pump — one pump per engine cylinder
• Mechanically driven directly by the engine camshaft
• High-pressure fuel delivery to individual injectors via high-pressure fuel lines
• Designed for heavy-duty, continuous-duty operation in marine and industrial environments
• Capable of operating on diesel fuel and, in some configurations, heavy fuel oil (HFO)

Important distinctions:

• This is NOT a common rail pump
• This is NOT a unit injector (UIS/PDE)
• This is NOT a rotary/distributor pump (VE/VP)
• This is a dedicated single-cylinder PF pump for large marine/industrial engines

Engine Application

The Bosch F00BL0P058 (Type PFR1CY180/918) is designed for the Wärtsilä 20 series medium-speed marine and industrial diesel engine.

About the Wärtsilä 20 Engine

The Wärtsilä 20 is a well-established medium-speed 4-stroke diesel engine widely used in marine auxiliary and main propulsion applications, as well as land-based power generation. It is available in 5, 6, 8, and 9 cylinder in-line configurations and is known for its reliability and long service intervals.

The engine uses individual Bosch PFR injection pumps — one per cylinder — driven by the engine camshaft. Each pump delivers high-pressure fuel to its corresponding injector. Correct identification of the pump type formula (e.g. PFR1CY180/918) is essential when ordering replacement pumps, as multiple variants exist within the PFR1CY180 family.

Related Bosch PFR1CY180 Pump Variants for Wärtsilä 20

The PFR1CY180 pump family includes several variants used across Wärtsilä 20 engines. The F00BL0P058 (PFR1CY180/918) is the latest in this series:

Important: Always verify the correct type formula from your engine’s spare parts documentation before ordering. Different variants may not be interchangeable without engine-specific calibration.

Common Failure Symptoms

A failing injection pump on a Wärtsilä 20 engine typically presents with one or more of the following symptoms:

• Uneven engine running — one cylinder not contributing correctly to power output
• Black or white exhaust smoke from the affected cylinder
• Power loss — engine unable to reach rated output
• High fuel consumption — pump delivering incorrect fuel quantity
• Cylinder misfire or knock — detectable via cylinder cut-out test
• Fuel leakage — worn pump seals or plunger wear
• High exhaust temperature on one cylinder — visible on exhaust monitoring system

Recommendation: Before replacing an injection pump on a Wärtsilä 20, always perform a cylinder cut-out test and inspect the high-pressure fuel line, delivery valve, and injector on the affected cylinder. A worn or stuck delivery valve can mimic pump failure.

Frequently Asked Questions

What engine does the Bosch F00BL0P058 fit?
It is designed for the Wärtsilä 20 (W20) medium-speed 4-stroke marine and industrial diesel engine, using the Bosch PFR individual injection pump system.

What is the difference between F00BL0P057 and F00BL0P058?
The F00BL0P058 (PFR1CY180/918) supersedes the F00BL0P057 and is the current production version. The F00BL0P058 is fully compatible as a replacement for the F00BL0P057.

How many injection pumps does a Wärtsilä 20 engine need?
One per cylinder. The Wärtsilä 20 is available in 5, 6, 8, and 9 cylinder configurations, so a complete set requires 5 to 9 pumps depending on the engine variant.

Is the F00BL0P058 a common rail pump?
No. It is a Bosch PFR individual injection pump — a mechanically driven, single-cylinder high-pressure pump. It is not part of a common rail system.

Can the F00BL0P058 be rebuilt?
Yes. Bosch-authorised marine diesel injection workshops can overhaul and recalibrate PFR pumps to OEM specifications. However, for critical marine applications, new genuine Bosch pumps are strongly recommended to ensure reliability and avoid unplanned downtime.

Conclusion

The Bosch F00BL0P058 (Type PFR1CY180/918) is the current production injection pump for the Wärtsilä 20 medium-speed marine and industrial diesel engine. As the supersession of the F00BL0P057, it is the correct replacement part for vessels and power plants operating Wärtsilä 20 engines worldwide.

For marine engineers, ship operators, and diesel injection specialists, accurate identification of the Bosch type formula and OEM cross-reference is essential to ensure correct parts ordering and avoid costly engine downtime.

DieselDB stocks genuine Bosch PFR injection pumps for Wärtsilä engines. Contact us or check availability →