23670-09350 — Technical Research
Denso solenoid common-rail injector for the Toyota 3.0 D-4D (engine 1KD-FTV) fitted to the Hilux, Land Cruiser Prado and Hiace. Toyota OE 23670-09350. Each injector carries a Denso correction/IQA code that must be programmed to the ECU with Toyota Techstream on fitment. The 1KD-FTV is sensitive to fuel filtration; failures are driven by contamination and back-leakage wear. Key symptoms: Rough idle / vibration; Hard starting; Loss of power / limp mode; Black smoke. Common failure modes: Internal wear / high back-leakage; Water-in-fuel corrosion; Nozzle coking.
Denso 23670-09350 3.0 D-4D (1KD-FTV) Common Rail Injector (Toyota Hilux / Land Cruiser Prado / Hiace)
Denso solenoid common-rail injector for the Toyota 3.0 D-4D (engine 1KD-FTV) fitted to the Hilux, Land Cruiser Prado and Hiace. Toyota OE 23670-09350. Each injector carries a Denso correction/IQA code that must be programmed to the ECU with Toyota Techstream on fitment. The 1KD-FTV is sensitive to fuel filtration; failures are driven by contamination and back-leakage wear. Key symptoms: Rough idle / vibration; Hard starting; Loss of power / limp mode; Black smoke. Common failure modes: Internal wear / high back-leakage; Water-in-fuel corrosion; Nozzle coking.
A leaking injector unbalances cylinder fuelling on the 1KD-FTV.
Excess back-leakage drops cranking rail pressure.
Out-of-range delivery or rail-pressure deviation cuts power.
Poor atomisation over-fuels the cylinder.
Cylinder-specific injector or fuel-metering codes.
- InstallationProgram the Denso correction/IQA code to the correct cylinder with Toyota Techstream before road test.
- InstallationRenew the combustion seal and clamp hardware; torque to spec.
- MisdiagnosisRead live back-leakage data to find the weak cylinder before removal.
- WarningConfirm the OE number 23670-09350 stamped on the old injector; the 1KD-FTV is sensitive to fuel quality - fix contamination first.
- TestingBench-test on a Denso-capable CR tester across delivery and back-leakage points before refit.
What is Denso injector 23670-09350?+
A Denso solenoid common-rail diesel injector for the Toyota 3.0 D-4D (1KD-FTV) engine. Toyota OE 23670-09350.
Which vehicles use 23670-09350?+
Toyota Hilux, Land Cruiser Prado and Hiace with the 3.0 D-4D (1KD-FTV) engine, roughly 2003-2015.
Is it solenoid or piezo?+
It is a Denso solenoid common-rail injector.
Does 23670-09350 need coding?+
Yes - program the Denso correction/IQA code to the correct cylinder with Toyota Techstream when fitting.
What is the OE part number?+
Toyota 23670-09350 references this Denso 1KD-FTV injector.
Does it fit the 2.5 D-4D (2KD)?+
No - the 2.5 D-4D (2KD-FTV) uses a different injector. The 3.0 D-4D (1KD-FTV) uses 23670-09350; confirm the OE number stamped on your injector.
What are the symptoms of failure?+
Rough idle, vibration, hard starting, black smoke, power loss/limp mode and an EML.
Why does my 1KD-FTV run rough?+
A worn or leaking injector unbalances fuelling; read live back-leakage data and bench-test the weak cylinder.
What causes these injectors to fail?+
Poor fuel filtration, contamination and back-leakage wear - fix the cause first.
Does a remanufactured 23670-09350 perform like new?+
A properly remanufactured injector is bench-tested and recalibrated to the Denso plan, then correction-coded on fitment.