Bosch 0414971010 Fuel Injection Pump (PF1C170BS1657)

Bosch 0414971010 Industrial Marine Fuel Injection Pump (PF1C170BS1657)

The Bosch 0414971010 (trade designation PF1C170BS1657) is a single-cylinder flange-mounted diesel injection pump (PF type) engineered for medium-speed marine propulsion engines, auxiliary generator sets (gensets), and heavy stationary power units.

This single-plunger high-pressure unit delivers metered fuel volumes under extreme thermal and mechanical loading. It operates via an external engine camshaft and mechanical roller tappet. The pump incorporates a precision-matched plunger-and-barrel assembly with helical metering edges, a constant-volume delivery valve, and an external mechanical rack/toothed segment connection for synchronization across multi-cylinder engine blocks.

Model Details

• Manufacturer: Bosch
• Bosch Article / Part Number: 0 414 971 010 / 0414971010
• Bosch Trade / Type Formula: PF1C170BS1657
• Design Breakdown:
  • PF = Individual single-cylinder injection pump (camshaft external to pump housing)
  • 1 = Single plunger element
  • C = Housing and mounting flange series
  • 170 = Stroke / element classification rating code
  • B = Cam/roller design revision
  • S1657 = Application-specific specification build code (calibrated rack stroke, timing edge layout, delivery valve spring setting)
• EAN Code: 3165141683233

Technical Details

Features

1. High-Tolerance Plunger & Barrel Geometry: Fitted with a precision-lapped 17 mm element engineered for minimal dynamic blow-by under operating pressures up to 1,200 bar, ensuring identical cylinder volume metering.
2. Modular Single-Cylinder PF Architecture: Allows individual cylinder isolation, calibration, and quick swapouts during sea trials or port turnarounds without dismounting adjacent units.
3. Cavitation-Resistant Delivery Valve: Incorporates a constant-volume delivery valve assembly with controlled decompression volume, eliminating secondary nozzle needle oscillations and post-injection dribble.
4. Multi-Fuel Operation Capability: Designed to cycle between light distillate marine fuels (MGO/LSMGO) and conditioned residual fuel (HFO) without cylinder head seizure or thermal binding.
5. Reinforced Flange Base: Engineered for high bolt-down torque retention on engine crankcase blocks to withstand heavy cyclical shock loads from cam lifter impacts.

Compatibility

• Marine & Industrial Engine Families:
  • Deutz / MWM medium-speed diesel engines (TBD 601, TBD 602, TBD 604 series)
  • Compatible installations on selected medium-bore marine engines from MTU, Wärtsilä, and industrial gen-drive platforms requiring Bosch PF-1C architecture
• Target Applications:
  • Commercial vessel main propulsion (tugs, coastal freighters, offshore support vessels)
  • Shipboard auxiliary diesel generators (continuous 50 Hz / 60 Hz prime power sets)
  • Island-mode municipal power plants and continuous-duty pumping stations
  • Heavy-duty industrial diesel backup generators

Part Number Cross-References

• Bosch Production Number: 0 414 971 010 / 0414971010
• Bosch Factory Type Code: PF1C170BS1657 / PF 1C 170 BS 1657
• OEM Cross References:
  • MWM / Deutz Part Number equivalents: Consult engine maintenance logbook (matches PF1C170 family specifications)
  • Functional Sister Models: Bosch PF1C170BS1640, Bosch PF1CV170/37

Frequently Asked Questions

What distinguishes a Bosch PF-type pump from an inline PE-type pump?

A Bosch PF pump is a separate, single-cylinder injection unit that bolts directly over the engine camshaft, using the engine’s internal lifters and cams. A PE pump contains an integrated camshaft and lifters inside its own multi-cylinder housing.

Can I replace a single PF1C170BS1657 pump without replacing the others on the engine?

Yes. Because PF pumps are modular, a single damaged or worn pump can be replaced independently. However, you must recalibrate the replacement unit’s pre-stroke shim thickness and balance the control rack against the engine governor to ensure balanced cylinder performance.

What are the symptoms of a worn plunger and barrel in this injection pump?

Typical signs include hard starting, loss of maximum engine load capability, white exhaust smoke at idle, elevated fuel leak-off/drain rates, and cylinder exhaust gas temperatures dropping well below bank average due to pressure blow-by under load.

Is this pump compatible with modern Ultra-Low Sulfur Diesel (ULSD)?

Yes, provided fuel lubricity criteria (HFRR wear scar < 460 µm) are maintained. When running modern low-sulfur marine gas oils (LSMGO), ensure adequate lubricity dosing or cooler operating temperatures to protect the precision lapped steel clearances.

How do I verify the correct pre-stroke (UT dimension) during reassembly?

Measure the distance from the pump mounting face to the plunger base at the initial fuel spill cut-off point using an OEM dial gauge depth adapter, and calculate the necessary gasket/shim pack according to the engine’s factory timing specifications.