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Spray Damper & Connection Set for Injector Test Holder
Versatile system for connecting injector test holders to diesel test benches — available for drop-in and quick coupling configurations (Bosch / Hartridge).
Replaces multiple OEM parts, ensuring compatibility and precision.
The Marbed Spray Damper & Connection Set provides a complete solution for connecting and testing diesel injector nozzles on different test benches.
Available in drop-in and quick coupling types, these accessories ensure safe fuel spray damping and efficient connection without leakage or disassembly.
🔹 Key Benefits
Universal compatibility with major test bench brands (Bosch, Hartridge, Zexel).
Rapid switch between drop-in and quick coupling systems.
Reliable sealing and precise alignment during nozzle testing.
Reduces spray hazards and fuel waste.
Direct interchange with OEM components.
🔹 Key Features
Designed for injector test holder assemblies (PDHK type I–IX / T)
Thread sizes: M20×1,5 / M22×1
Mounting type: Drop-in or Quick coupling
Materials: Hardened steel, precision-machined sealing surfaces
Compatibility: Bosch EPS 815, Hartridge AVM2PC, and equivalent benches
🔹 Operational Functions
Damps spray jet during injector opening tests.
Enables test nozzle holder connection to modern benches with quick couplings.
Allows replacement of old-style dampers with new threaded adaptors (EPS 815).
Quick setup change between bench systems (Bosch ↔ Hartridge).
🔹 Technical Data
| Marbed P/N | OEM Reference | Type / Thread | Usage | System |
| 84.70.003 | — | M20×1,5 | Drop-in type (bench cylinder) | Bosch (classic) |
| 84.70.005 | Bosch 1 687 010 089 / Zexel 157682-0300 | – | Quick coupling (Bosch) | Bosch EPS 815 Typ I–IX |
| 84.70.007 | Bosch 1 687 010 088 | M22×1 | Quick coupling (Bosch) | Bosch EPS 815 Typ T |
| 84.70.006 | Hartridge AI29/1 | – | Quick coupling (Hartridge) | Hartridge AVM2PC benches |
🔹 Use Cases
Diesel service workshops
Calibration and testing of mechanical or EDC pumps
Laboratory test benches for diesel injection pumps performance analysis
OEM and aftermarket bench maintenance
The Marbed spray dampers and connection sets are designed for various injector test bench systems. Choose the correct variant according to your setup:
Drop-in (bench cylinder) for classic Bosch benches.
Quick coupling (Bosch) for EPS 815.
Quick coupling (Hartridge) for AVM2PC.
🔹 FAQ
Q1. How do I know which version fits my bench?
→ Check if your bench has a drop-in hole (use 84.70.003) or quick coupling connector (use 84.70.005 / .007 for Bosch, 84.70.006 for Hartridge).
Q2. Can I replace 84.70.003 with 84.70.005?
→ Yes, on Bosch EPS 815 benches use 84.70.005 instead of 84.70.003.
Q3. Are Hartridge couplings interchangeable with Bosch?
→ No, Hartridge quick couplings have a different profile (use 84.70.006).
Q4. Which thread does each version use?
→ 84.70.005 = M20×1,5 / 84.70.007 = M22×1 / 84.70.003 and .006 = M20×1,5.
Q5. Are these parts OEM-equivalent?
→ Yes, they are fully interchangeable with Bosch, Zexel, and Hartridge OEM references.
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