What to know about ECU 55572800 NU
On this page you can buy a Denso MB275800-9923 engine control unit for the Opel Astra H / Zafira B with the 1.7 CDTI engine. It is a Virgin version – the Car Pass (PIN) code is reset. The unit has been refreshed and the housing refurbished – the electronics have never been repaired.
Matching by part number
- Application: the Opel Astra H / Zafira B with the 1.7 CDTI engine.
- Number to compare: 55572800 NU (55572800NU).
- Model and year do not decide compatibility – the label does.
Typical failure symptoms
- starting problems,
- injector control faults,
- uneven running and misfires.
The cause is usually the mounting position – the left front wheel arch next to the bumper, close to the ground, where rain, road spray and snow damage the ECU. Run a diagnosis before buying.
Label details
- Opel / GM number: 55572800
- Letter code: NU (55572800NU)
- Denso number: MB275800-9923
- ECU type: Denso 1.7 CDTI
Compare them with the label on your own ECU.
Two ways to start the ECU
- Programming after fitting with Tech-2 or OP-COM – the ECU has the Car Pass (PIN) code reset.
- Cloning included in the price – send the EEPROM and FLASH files or your whole old ECU, we read the data and return both.
Paid services: EGR OFF, tuning, DPF OFF (only on versions with a DPF). Warranty: 6 months.
Other Denso 1.7 CDTI Opel ECUs in stock
We describe Denso 1.7 CDTI ECUs in detail on our blog: Opel 1.7 CDTI Denso ECUs – Astra H, Zafira, Corsa. More models: the Opel engine ECUs category. All units from this manufacturer are on the Denso page.
Questions and answers: 55572800 NU
Which paid services are available for ECU 55572800 NU?
EGR OFF, tuning and DPF OFF – the latter only on versions with a DPF.
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Does ECU 55572800 NU fit my Opel Astra H / Zafira B?
Compare the label of your ECU with the number 55572800 NU (55572800NU). If it matches, the ECU fits.
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How do I program ECU 55572800 NU?
The ECU is a Virgin version with the Car Pass (PIN) code reset. After fitting it is programmed in the car with Tech-2 or OP-COM.
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What is the warranty on ECU 55572800 NU?
The warranty is 6 months.
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