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ENGINE FAMILY SPECIFICATIONBOSCH COMMON RAILEuro 4

Z19DT / Z19DTH / 937A5 / 939A2 (1.9 CDTI / 1.9 JTD) Diesel Injector
Cross-Reference & Technical Specs

Authoritative technical specifications, verified Bosch part numbers, control valve stamping codes, nozzle spray orifices, and hold-down tightening torque for the Z19DT / Z19DTH / 937A5 / 939A2 diesel engine family.

Primary OEMBOSCH
Control ValveF00VC01344
Nozzle CodeDLLA142P1607
Peak Pressure1600 bar
Hold-Down Torque25-30 N·m
View All 4 Compatible SKUs ↓
01

All Verified Part Numbers for Z19DT / Z19DTH / 937A5 / 939A2 (1.9 CDTI / 1.9 JTD)

The following 4 common-rail injector assemblies are calibrated for this engine family. Click any SKU to view individual test bench flow curves, sister cross-references, and vehicle applications.

OE Numbers: 55200259, 93189952, 15710-79J50
Control Valve: F00VC01344Nozzle Code: DLLA142P1607
OE Numbers: 93184178, 55198218, 71792440, 55191958, 55192739, 5821100, 93179047, 93184794
Control Valve: F00VC01320Nozzle Code: DLLA148P1347
OE Numbers: 55196295, 55198218, 55221020, 71793015, 93169122, 93190435, 5821102, 821048
Control Valve: F00VC01336Nozzle Code: DLLA148P1347
OE Numbers: 55198217, 55196294
Control Valve: F00VC01344Nozzle Code: DLLA142P1321
Part Number (SKU)Primary OE ReferenceControl ValveNozzle Code
0445110276 →
55200259, 93189952, 15710-79J50F00VC01344DLLA142P1607
0445110159 →
93184178, 55198218, 71792440F00VC01320DLLA148P1347
0445110243 →
55196295, 55198218, 55221020F00VC01336DLLA148P1347
0445110244 →
55198217, 55196294F00VC01344DLLA142P1321
02

Verified Vehicle Compatibility

Make / ManufacturerVehicle Model & PlatformEngine SpecificationModel Years
OpelAstra H 1.9 CDTIZ19DT / Z19DTH / 937A5 / 939A2 (1.9 CDTI / 1.9 JTD)2004-2010
OpelVectra C / Signum 1.9 CDTIZ19DT / Z19DTH / 937A5 / 939A2 (1.9 CDTI / 1.9 JTD)2004-2008
OpelZafira B 1.9 CDTIZ19DT / Z19DTH / 937A5 / 939A2 (1.9 CDTI / 1.9 JTD)2005-2010
FiatCroma (194) 1.9 MultijetZ19DT / Z19DTH / 937A5 / 939A2 (1.9 CDTI / 1.9 JTD)2005-2011
FiatSedici 1.9 D MultijetZ19DT / Z19DTH / 937A5 / 939A2 (1.9 CDTI / 1.9 JTD)2006-2014
Alfa Romeo159 1.9 JTDMZ19DT / Z19DTH / 937A5 / 939A2 (1.9 CDTI / 1.9 JTD)2005-2011
SuzukiGrand Vitara II (JT) 1.9 DDiSZ19DT / Z19DTH / 937A5 / 939A2 (1.9 CDTI / 1.9 JTD)2005-2015
OpelAstra H / Vectra C / Zafira B 1.9 CDTIZ19DT / Z19DTH / 937A5 / 939A2 (1.9 CDTI / 1.9 JTD)2004-2010
FiatCroma / Bravo II / Stilo 1.9 Multijet 16VZ19DT / Z19DTH / 937A5 / 939A2 (1.9 CDTI / 1.9 JTD)2004-2011
Alfa Romeo159 / 147 / GT 1.9 JTDm 16VZ19DT / Z19DTH / 937A5 / 939A2 (1.9 CDTI / 1.9 JTD)2004-2011
Saab9-3 II 1.9 TiDZ19DT / Z19DTH / 937A5 / 939A2 (1.9 CDTI / 1.9 JTD)2004-2011
OpelVectra C / Signum / Astra H / Zafira B 1.9 CDTIZ19DT / Z19DTH / 937A5 / 939A2 (1.9 CDTI / 1.9 JTD)2004-2010
Alfa Romeo147 / 159 / GT / Brera / Spider 1.9 JTDm 16V & 2.4 JTDm 20VZ19DT / Z19DTH / 937A5 / 939A2 (1.9 CDTI / 1.9 JTD)2005-2011
FiatCroma / Bravo II / Stilo 1.9 D Multijet 16V & 2.4 D MultijetZ19DT / Z19DTH / 937A5 / 939A2 (1.9 CDTI / 1.9 JTD)2005-2011
Saab9-3 (YS3F) / 9-5 (YS3E) 1.9 TiDZ19DT / Z19DTH / 937A5 / 939A2 (1.9 CDTI / 1.9 JTD)2004-2011
Alfa Romeo159 / 159 Sportwagon 1.9 JTDM 8VZ19DT / Z19DTH / 937A5 / 939A2 (1.9 CDTI / 1.9 JTD)2005-2011
FiatCroma (194) 1.9 Multijet 8VZ19DT / Z19DTH / 937A5 / 939A2 (1.9 CDTI / 1.9 JTD)2005-2010
03

Installation, Tightening Torque & Re-torque Protocol

Strict torque compliance is mandatory on Z19DT / Z19DTH / 937A5 / 939A2 (1.9 CDTI / 1.9 JTD) common-rail cylinder heads. Over-torquing stretches the injector body or strips the head clamping threads, while under-torquing allows combustion blow-by past the copper sealing washer:

🔧 Recommended Assembly Torques:
  • Hold-down clamp bolt: 25-30 N·m (cold state). Always clean the cylinder head recess with an injector seat reamer.
  • High-pressure rail flare nut: 25-30 N·m using a dedicated 17 mm line wrench.
  • Return leak-off banjo bolt: 9-12 N·m with fresh copper washers on both sides of the banjo union.
⚠️ ECU IMA Coding Requirement:

After fitting replacement injectors on Z19DT / Z19DTH / 937A5 / 939A2 (1.9 CDTI / 1.9 JTD), generate or program the cylinder-specific IMA calibration code into the engine ECU using an OEM-level scan tool (Bosch KTS, Renault CLIP, or VAG-COM) to prevent cylinder power imbalance and rough idle.

04

Technical Diagnostics FAQ for Z19DT / Z19DTH / 937A5 / 939A2 (1.9 CDTI / 1.9 JTD)

What DTC fault codes indicate a failing injector on Z19DT / Z19DTH / 937A5 / 939A2 (1.9 CDTI / 1.9 JTD)?

The most frequent fault codes are P0201 through P0204 (Injector Circuit Malfunction on Cylinders 1-4), P2146/P2149 (Injector Group Supply Voltage Error), and P0087 (Fuel Rail Pressure Low due to excessive internal leak-off). Measure solenoid coil resistance across the pins (0.5-1.5 Ω) and perform a graduated-bottle dynamic leak-back test to pinpoint the leaking cylinder.

Can sister SKUs within the Z19DT / Z19DTH / 937A5 / 939A2 (1.9 CDTI / 1.9 JTD) family be interchanged?

Not unless explicitly confirmed on the vehicle build plate. While sister SKUs share the same physical outer envelope and F00VC01344 control valve, they differ in nozzle spray orifice angle and factory IMA flow calibration. Mixing sister SKUs on the same engine block can trigger rough idle, elevated exhaust gas temperatures (EGT), and MOT emissions failure.

Which specific Bosch injectors fit the Z19DT / Z19DTH / 937A5 / 939A2 (1.9 CDTI / 1.9 JTD) engine?

The verified genuine Bosch common-rail injectors engineered for the Z19DT / Z19DTH / 937A5 / 939A2 (1.9 CDTI / 1.9 JTD) engine family are: