VM39C Diesel Injectors
Compatible with Chrysler Voyager (RG), Jeep Cherokee (KJ), Jeep Grand Cherokee (WJ/WG)
- OEM Tested & Calibrated
- 12-Month Warranty
- Free UK Delivery
Select the correct injector for your VM39C engine below
Fits Chrysler Voyager (RG), Jeep Cherokee (KJ), Jeep Grand Cherokee (WJ/WG) and more
Top injectors for VM39C
Compatible Injectors for VM39C
- OEM Tested
- 12-Month Warranty
- Free UK Delivery
Popular VM39C injectors
Common replacements fitted to Chrysler Voyager (RG)Each link opens the product page with full fitment, pricing and warranty information.
Common problems solved by these injectors
About the VM39C engine
The VM39C is a 2.5l/2.7l/2.8l crd common rail diesel engine. This engine uses Bosch 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 VM39C Engine
| Vehicle | Engine | Years |
|---|---|---|
| Chrysler Voyager (RG) injector | 2.5 CRD | 2001–2007 |
| Jeep Cherokee (KJ) injector | 2.5 CRD | 2001–2008 |
| Jeep Grand Cherokee (WJ/WG) injector | 2.7 CRD | 2001–2004 |
Common VM39C 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.
VM39C Technical Specifications
Displacement
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Power
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Torque
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Fuel System
Common Rail Direct Injection
The VM39C is a 2.5l/2.7l/2.8l crd common rail diesel engine. This engine uses Bosch diesel injectors.
Engine Intelligence
Jeep / Chrysler 2.5 & 2.8 CRD (VM Motori)
Documented failure modes
- Injector back-leak beyond specification causing rail-pressure loss
- Nozzle wear causing over-fuelling and smoke
- Electrical connector corrosion logging injector circuit codes
Diagnostic guidance
- Run a leak-off comparison across all cylinders before condemning a single injector
- Inspect the injector wiring and connectors for corrosion — common on vehicles used off-road
- Use new sealing washers and torque the clamps to specification on refit
Fitment note: The VM Motori CRD family spans 2.5 and 2.8 outputs across Cherokee, Grand Cherokee and Voyager — match the Bosch reference etched on the injector body.