The Integrated Bench: Bosch EPS708
The Bosch EPS708 is a fully integrated, OEM-grade test bench designed specifically for Common Rail pump calibration.
Its architecture includes all critical measurement components — such as the Bosch flow meter 1 687 234 013 — directly managed and calibrated through Bosch’s proprietary EPS 945 software.
This means:
- Factory calibration and certification for Bosch CR systems.
- Automatic recognition and adjustment of sensors.
- Dedicated hydraulic, electronic, and software subsystems.
- Perfect alignment with OEM repair procedures.
The EPS708 is the right choice for workshops focused on OEM conformity, precision, and warranty-level testing.
The Modular Platform: DETEQ ERT45R + FL400/A
By contrast, the ERT45R system represents a modular, open, and upgradable approach to diesel injection testing.
It’s not a bench in itself — it’s an electronic control and measurement platform that can be installed on any existing test bench, turning it into a powerful tool for both traditional and modern injection systems.
Key characteristics
- Compatible with Bosch, Delphi, Denso, Siemens/VDO, Caterpillar, and Cummins pumps.
- Handles not only Common Rail control technologies, but also analog, and digital through dedicated Smart Cards and kits.
- Uses the FL400/A flow meter (code 87.11.015) for measuring both delivery and return flow up to 180 L/h
- Supports all major Common Rail pump types: Bosch CP1, CP3, CP4, CP2; Delphi DFP1/DFP2; Denso HP3/HP4/HP0; Siemens/VDO; and heavy-duty models such as Cat C6.6 and Cummins XPI
When does it make sense?
Installing an ERT45R module on a Bosch EPS708 would be redundant — the 708 already integrates the same measurement and control logic within its software.
However, ERT45R becomes extremely valuable when used on:
- Other Bosch benches (EPS 805, 815, etc.).
- Other-made test benches without electronic control.
- Mechanical benches currently used for in-line or rotary pumps.
In these cases, ERT45R gives a second life to existing equipment, expanding its capabilities to include Common Rail testing without the cost of a new OEM bench.
Technical Comparison
| Aspect | Bosch EPS708 | ERT45R + FL400/A |
| Type | Fully integrated OEM test bench | Modular retrofit system |
| Flow measurement | Flow meter 1 687 234 013 (Bosch OEM) | FL400/A flow meter 87.11.015 |
| Supported pumps | Bosch CR (CP1–CP4) | Bosch, Delphi, Denso, VDO, Cat, Cummins |
| Integration | Closed ecosystem | Open architecture |
| Best suited for | OEM service centers | Independent workshops and retrofits |
When to Choose Each Solution
| Scenario | Recommended Solution | Reason |
| Upgrading an existing bench for CR testing | ERT45R + FL400/A | Adds electronic control and flow measurement |
| Mixed pump portfolio (cars + heavy duty) | ERT45R | Multi-brand coverage and flexibility |
| Maintenance under OEM warranty | EPS708 | Compliance with Bosch specifications |
| Extending workshop capabilities cost-effectively | ERT45R | Modular upgrade without new bench investment |
Conclusion
The EPS708 and ERT45R represent two complementary philosophies in diesel test-bench technology.
EPS708 is a dedicated, factory-integrated platform for Bosch CR systems — precise, certified, and closed.
ERT45R is a universal retrofit system, ideal for workshops that want to extend the life and capabilities of existing benches, handling Bosch, Delphi, Denso, and other pump technologies on a single platform.
In short:
Choose EPS708 for OEM requirements.
Choose ERT45R + FL400/A for flexibility, scalability, and independence.
EPS708 vs ERT45R: Two Different Approaches to Testing Common Rail Pumps