Z17DTH Diesel Injectors
Compatible with Opel Astra H, Opel Corsa D, Vauxhall Astra H, and 3 more
- OEM Tested & Calibrated
- 12-Month Warranty
- Free UK Delivery
Select the correct injector for your Z17DTH engine below
Fits Opel Astra H, Opel Corsa D, Vauxhall Astra H, Vauxhall Corsa D and more
Top injectors for Z17DTH
Compatible Injectors for Z17DTH
- OEM Tested
- 12-Month Warranty
- Free UK Delivery
Common problems solved by these injectors
About the Z17DTH engine
The Z17DTH is a 1.7l cdti common rail diesel engine. This engine uses Denso diesel injectors.
How Diesel Injectors Are Remanufactured
Watch our 3D walkthrough of the diesel injector remanufacturing process and see how injectors are professionally restored for reliable service.
Vehicles Using Z17DTH Engine
| Vehicle | Engine | Years |
|---|---|---|
| Opel Astra H injector | 1.7 CDTi | 2004–2010 |
| Opel Corsa D injector | 1.7 CDTi | 2006–2014 |
| Vauxhall Astra H injector | 1.7 CDTi | 2004–2010 |
| Vauxhall Corsa D injector | 1.7 CDTi | 2006–2014 |
| Vauxhall Meriva injector | 1.7 CDTi | 2006–2010 |
| Vauxhall Zafira B injector | 1.7 CDTi | 2005–2012 |
Common Z17DTH Injector Problems
Rough idle and engine vibration
Worn injector nozzles cause uneven fuel spray, leading to rough idle at low RPM. Most noticeable when the engine is cold.
Excessive exhaust smoke
Black or blue-grey smoke on acceleration indicates poor fuel atomisation. This is often caused by carbon buildup on the injector nozzle tip.
Poor fuel economy
A worn or leaking injector delivers incorrect fuel quantities, reducing efficiency by 10–20% in severe cases.
Engine misfire under load
Intermittent misfires during acceleration suggest one or more injectors are failing to deliver the correct fuel pressure.
Difficult cold starting
Degraded injector nozzles struggle to atomise fuel at lower cranking pressures, causing extended crank times in cold weather.
Loss of power
Gradual power loss across the rev range, particularly above 2500 RPM, can indicate injector flow rate degradation.
Increased diesel knock
Louder than normal combustion noise, especially at idle, can indicate incorrect injection timing due to worn injector internals.
Z17DTH Technical Specifications
Displacement
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Power
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Torque
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Fuel System
Common Rail Direct Injection
The Z17DTH is a 1.7l cdti common rail diesel engine. This engine uses Denso diesel injectors.
Engine Intelligence
Vauxhall / Opel 1.7 CDTI 16v (Z17DTH — Denso)
Documented failure modes
- Injector leak-back rising with wear
- Nozzle seat leaks causing smoke and knock
Diagnostic guidance
- Compare leak-off across all injectors — high return identifies the failing unit
- Clean injector seats thoroughly and fit new washers
- Verify repair with a calibrated bench test where possible
Fitment note: Z17DTH shares its Denso body style with other applications — order by the DCRI / 095000 reference etched on the injector.
Related Z17DTH Engine Guides
Related Pages
Denso 1.7L CDTi — browse compatible engines, vehicles, and injectors
Compatible Vehicles
Recommended Injector
DCRI105080
Denso — View product page