570855 High‑Pressure Fuel Pump – Cross‑Model Interchangeability & Mechanical Compatibility For Fleet Standardisation

For a workshop servicing a mixed fleet of Volvo, Scania, and Mercedes‑Benz trucks, maintaining a separate inventory of pumps for each brand is both costly and inefficient. The 570855 high‑pressure fuel pump is a cross‑brand compatible core unit used across multiple OEM applications, allowing a single stock‑keeping unit to serve a range of engines. Its widespread adoption-from Volvo D13 to Scania DC13 and Mercedes‑Benz OM 471-makes it one of the most versatile pump platforms in the Bosch CP1/CP3 family. However, the same part number can have subtle variants in drive coupling, outlet port orientation, and fuel metering valve calibration. This article examines the 570855's interchangeability, the critical variations that require careful matching, and the installation practices that ensure a successful fit across different engine platforms-without repeating pump‑flow, efficiency, cavitation, or interface‑module content.

Although the 570855 shares the same core pump body, three critical variant differences affect fitment:

1. Drive Coupling Type

Spline (22‑tooth): Most common, used on Volvo D13 and MAN D2676.

Keyway (6 mm): Used on some Scania DC13 and early Mercedes‑Benz OM 471.

Pin‑drive: Less common, used on certain DAF MX‑13 and Iveco Cursor variants.

⚠️ Mismatch Risk: Installing a spline‑drive pump on a keyway engine will not engage the drive-the pump will not spin, and the engine will not start. Always verify the drive type before ordering.

2. Outlet Port Orientation

Straight outlet: Standard on Volvo and MAN.

90° angled outlet: Used on Mercedes‑Benz OM 471 to clear the timing cover.

45° angled outlet: Occasionally used on Scania DC13.

⚠️ Mismatch Risk: Using a straight outlet on an engine that requires a 90° outlet will cause the high‑pressure line to be routed incorrectly, leading to chafing and possible fuel leaks.

3. SCV Calibration

All 570855 pumps use the same physical SCV, but the calibration code (printed on the valve) varies between engine families.

The ECU must recognise the correct SCV calibration to control the pump accurately.

⚠️ Mismatch Risk: Installing a pump with the wrong SCV calibration will cause rail pressure control faults (e.g., P0087, P0093). The calibration code must match the engine's ECU software.

Application	Drive Type	Outlet Angle	SCV Code
Volvo D13	Spline (22‑t)	Straight	035
Scania DC13	Keyway (6mm)	45°	041
Mercedes‑Benz OM 471	Spline (22‑t)	90°	028
MAN D2676	Spline (22‑t)	Straight	035
DAF MX‑13	Spline (22‑t)	Straight	038
Iveco Cursor 13	Pin‑drive	45°	042

Important: This table is a guide-always verify the exact specifications from the engine's service manual or the existing pump's identification tag before ordering.

The 570855 is suitable for workshops and fleets that operate across multiple European truck brands. By stocking a single core part number and a selection of drive hubs and outlet adapters, a workshop can reduce inventory while maintaining service capability.

Recommended Inventory Strategy:

Stock 3‑5 units of the core 570855 pump (bare pump).

Stock drive hubs (spline, keyway, pin) as separate components.

Stock outlet fittings (straight, 90°, 45°) as separate components.

This approach reduces the number of distinct pump part numbers from 6 to 1 (plus 3‑4 adapters).

⚠️ Important: The adapters (drive hub and outlet fitting) must be installed in the workshop-they are not factory‑fitted. Incorrect installation of these adapters can cause misalignment and premature pump failure.

Before installing a 570855, complete this verification checklist:

Drive coupling: Remove the protective cap from the pump shaft and inspect the drive hub. Compare it with the engine's drive shaft.

Outlet orientation: Hold the pump in position and check if the outlet port aligns with the high‑pressure line. If not, unscrew the outlet fitting and re‑orient it (the fitting is a separate component that can be rotated).

SCV code: Read the 3‑digit code on the SCV and compare it with the engine's required code (from the service manual or a diagnostic tool). If they differ, replace the SCV with the correct code.

Mounting flange: Confirm the SAE B flange matches the engine's mounting face (dowel pins and bolt holes).

Torque Settings:

Mounting bolts: 45‑50 N·m.

High‑pressure outlet (M14): 70‑75 N·m.

Drive hub retaining bolt: 25‑30 N·m (apply thread locker).

Q1: Can I use a 570855 pump from a Volvo engine on a Scania engine if the SCV code is different?
Physically yes, but you must replace the SCV with the correct Scania code. The drive coupling and outlet orientation must also match. If all three are correct, the pump will function identically.

Q2: How do I identify the correct 570855 variant without removing the pump?
The pump has an identification tag with a variant code (e.g., "570855-035"). The last three digits indicate the SCV calibration. The drive type can be identified by looking at the exposed drive hub (visible through the timing cover access port). The outlet orientation can be seen visually.

Q3: Is the 570855 compatible with Euro 6e engines?
Yes, the 570855 is used on many Euro 6e engines (2018‑2024). However, the specific SCV code and drive type may differ from Euro 5 variants. Always verify the application.

Q4: I have an engine with a keyway drive but my 570855 has a spline drive. Can I change the drive hub?
Yes-the drive hub is a separate component pressed onto the pump shaft. It can be removed with a puller and replaced with the correct hub (keyway, spline, or pin). However, this requires the pump to be removed from the engine and should be done on a workbench.

Q5: What is the difference between the 570855 and the 570854?
The 570855 is the standard‑flow variant (68 L/h), while the 570854 is the high‑flow variant (72 L/h) for higher‑power engines. They are physically interchangeable but have different SCV calibrations. Using a 570855 on an engine calibrated for a 570854 may cause rail pressure faults at high load.

Q6: The 570855 is a Bosch CP3 pump. Can I use it on a Delphi or Denso system?
No-the CP3 pump is physically incompatible with Delphi and Denso common‑rail systems. The mounting flange, drive interface, and high‑pressure outlet port are all Bosch‑specific. A 570855 will not fit a Delphi or Denso engine.

 

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