A2C59507596 — Frequently Asked Questions
Verified answers about the Continental/Siemens VDO A2C59507596 1.5 dCi (K9K) Piezo Common Rail Injector (Renault/Nissan/Dacia/Mercedes).
What is injector A2C59507596?
A Continental (Siemens VDO) piezo common-rail diesel injector for the Renault-Nissan K9K 1.5 dCi engine, also used on Dacia and the Mercedes OM607. Renault OE 166006212R.
Which vehicles use A2C59507596?
Renault Megane/Clio/Captur/Kadjar, Nissan Qashqai II/Juke, Dacia Duster/Logan/Sandero and Mercedes A/B/CLA/GLA 1.5 dCi/CDI (K9K / OM607).
Is it solenoid or piezo?
It is a Continental/Siemens VDO piezo common-rail injector.
Does A2C59507596 need coding?
Yes - code the injector classification (C2I) code to the correct cylinder with CLIP/diagnostic when fitting.
What are the OE part numbers?
Renault 166006212R, Dacia 8201041272 and Mercedes A6070700087 reference this Continental injector; alternates include 166006526R and H8201100113.
Does it fit the Mercedes 1.5 CDI?
Yes - the Mercedes OM607 1.5 CDI in the A/B/CLA/GLA is a rebadged Renault K9K and uses the same Continental injector.
What are the symptoms of failure?
Rough idle, vibration, hard starting, black smoke, power loss/limp mode and an EML.
Why does my 1.5 dCi run rough?
A worn or leaking injector unbalances fuelling; read live cylinder-balance data and bench-test the suspect cylinder.
What causes these injectors to fail?
Poor fuel filtration, contamination and back-leakage wear plus piezo-stack ageing - fix the cause first.
Does a remanufactured A2C59507596 perform like new?
A properly remanufactured injector is bench-tested and recalibrated on a piezo-capable tester, then C2I-coded on fitment.