GM 2.0L Ecotec Turbo SIDI (LTG / LSY Tripower / LHU) 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 GM 2.0L Ecotec Turbo SIDI diesel engine family.
All Verified Part Numbers for GM 2.0L Ecotec Turbo SIDI (LTG / LSY Tripower / LHU)
The following 8 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.
Bosch 12641847 Common Rail Injector for GM 2.0L Ecotec Turbo SIDI (LTG / LSY Tripower / LHU) →
HITACHI CRIIntegrated Solenoid Fuel Pressure RegulatorNozzle Code: See Product DetailBosch 12697966 Common Rail Injector for GM 2.0L Ecotec Turbo SIDI (LTG / LSY Tripower / LHU) →
HITACHI CRIIntegrated Pulse-Width Modulated Spill Valve SolenoidNozzle Code: See Product DetailBosch 12698484 Common Rail Injector for GM 2.0L Ecotec Turbo SIDI (LTG / LSY Tripower / LHU) →
HITACHI CRIIntegrated Pulse-Width Modulated Electric Spill Valve (SCV)Nozzle Code: See Product DetailBosch 12698552 Common Rail Injector for GM 2.0L Ecotec Turbo SIDI (LTG / LSY Tripower / LHU) →
HITACHI CRIHigh-Pressure Solenoid Multi-Hole Injector NozzleNozzle Code: See Product DetailBosch 0261520135 Common Rail Injector for GM 2.0L Ecotec Turbo SIDI (LTG / LSY Tripower / LHU) →
HITACHI CRIIntegrated Solenoid Fuel Pressure RegulatorNozzle Code: See Product DetailBosch 12658481 Common Rail Injector for GM 2.0L Ecotec Turbo SIDI (LTG / LSY Tripower / LHU) →
HITACHI CRIIntegrated Solenoid Fuel Pressure RegulatorNozzle Code: See Product DetailBosch 12688607 Common Rail Injector for GM 2.0L Ecotec Turbo SIDI (LTG / LSY Tripower / LHU) →
HITACHI CRIIntegrated Solenoid Fuel Pressure RegulatorNozzle Code: See Product DetailBosch 12634491 Common Rail Injector for GM 2.0L Ecotec Turbo SIDI (LTG / LSY Tripower / LHU) →
HITACHI CRIIntegrated Solenoid Fuel Pressure RegulatorNozzle Code: See Product Detail| Part Number (SKU) | Primary OE Reference | Control Valve | Nozzle Code |
|---|---|---|---|
| 12639694, 12633492, 12608371 | Integrated Solenoid Fuel Pressure Regulator | See Product Detail | |
| 12641847, 12633492, 12633115 | Integrated Pulse-Width Modulated Spill Valve Solenoid | See Product Detail | |
| 12683985, 12694539, 12708365 | Integrated Pulse-Width Modulated Electric Spill Valve (SCV) | See Product Detail | |
| 12707255, 0261500690, 0261500691 | High-Pressure Solenoid Multi-Hole Injector Nozzle | See Product Detail | |
| 12658478, 12651170, 0261520136 | Integrated Solenoid Fuel Pressure Regulator | See Product Detail | |
| 12643171, 12634125, 217-3443 | Integrated Solenoid Fuel Pressure Regulator | See Product Detail | |
| 12688608, 12693821, 12682977 | Integrated Solenoid Fuel Pressure Regulator | See Product Detail | |
| 12658339, 12651170, HPP0008 | Integrated Solenoid Fuel Pressure Regulator | See Product Detail |
Verified Vehicle Compatibility
| Make / Manufacturer | Vehicle Model & Platform | Engine Specification | Model Years |
|---|---|---|---|
| Cadillac | ATS / ATS-L 2.0T | GM 2.0L Ecotec Turbo SIDI (LTG / LSY Tripower / LHU) | 2013-2019 |
| Buick | Regal GS / Regal 2.0T | GM 2.0L Ecotec Turbo SIDI (LTG / LSY Tripower / LHU) | 2014-2020 |
| Buick | Envision 28T AWD | GM 2.0L Ecotec Turbo SIDI (LTG / LSY Tripower / LHU) | 2015-2020 |
| Chevrolet | Camaro 2.0T | GM 2.0L Ecotec Turbo SIDI (LTG / LSY Tripower / LHU) | 2016-2020 |
| Cadillac | ATS 2.0T | GM 2.0L Ecotec Turbo SIDI (LTG / LSY Tripower / LHU) | 2013-2019 |
| Buick | Regal GS 2.0T | GM 2.0L Ecotec Turbo SIDI (LTG / LSY Tripower / LHU) | 2014-2020 |
| Cadillac | CT5 2.0T LSY | GM 2.0L Ecotec Turbo SIDI (LTG / LSY Tripower / LHU) | 2020-2024 |
| Cadillac | XT4 2.0T LSY | GM 2.0L Ecotec Turbo SIDI (LTG / LSY Tripower / LHU) | 2019-2024 |
| Buick | Envision S 2.0T LSY | GM 2.0L Ecotec Turbo SIDI (LTG / LSY Tripower / LHU) | 2020-2024 |
| Cadillac | CT5 2.0T | 2.0L LSY Turbo 174kW | 2020-2024 |
| Cadillac | XT4 2.0T | 2.0L LSY Turbo 174kW | 2019-2024 |
| Buick | Envision II | 2.0L LSY Turbo 174kW | 2021-2024 |
Installation, Tightening Torque & Re-torque Protocol
Strict torque compliance is mandatory on GM 2.0L Ecotec Turbo SIDI (LTG / LSY Tripower / LHU) 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:
- Hold-down clamp bolt: 10 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.
After fitting replacement injectors on GM 2.0L Ecotec Turbo SIDI (LTG / LSY Tripower / LHU), 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.
Technical Diagnostics FAQ for GM 2.0L Ecotec Turbo SIDI (LTG / LSY Tripower / LHU)
What DTC fault codes indicate a failing injector on GM 2.0L Ecotec Turbo SIDI (LTG / LSY Tripower / LHU)?
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 GM 2.0L Ecotec Turbo SIDI (LTG / LSY Tripower / LHU) family be interchanged?
Not unless explicitly confirmed on the vehicle build plate. While sister SKUs share the same physical outer envelope and Integrated Solenoid Fuel Pressure Regulator 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 GM 2.0L Ecotec Turbo SIDI (LTG / LSY Tripower / LHU) engine?
The verified genuine Bosch common-rail injectors engineered for the GM 2.0L Ecotec Turbo SIDI (LTG / LSY Tripower / LHU) engine family are:
- Bosch 12641847 Common Rail Injector → (OE: 12639694, 12633492, 12608371, 12634491) — Control Valve: Integrated Solenoid Fuel Pressure Regulator,
- Bosch 12697966 Common Rail Injector → (OE: 12641847, 12633492, 12633115, 12639694) — Control Valve: Integrated Pulse-Width Modulated Spill Valve Solenoid,
- Bosch 12698484 Common Rail Injector → (OE: 12683985, 12694539, 12708365, HFS034-135) — Control Valve: Integrated Pulse-Width Modulated Electric Spill Valve (SCV),
- Bosch 12698552 Common Rail Injector → (OE: 12707255, 0261500690, 0261500691) — Control Valve: High-Pressure Solenoid Multi-Hole Injector Nozzle,
- Bosch 0261520135 Common Rail Injector → (OE: 12658478, 12651170, 0261520136, GDP108, HM10028, HPP0018) —
- Bosch 12658481 Common Rail Injector → (OE: 12643171, 12634125, 217-3443, FJ1157, FIJ0041) —
- Bosch 12688607 Common Rail Injector → (OE: 12688608, 12693821, 12682977, HPP0042, GDP112, HM10048) —
- Bosch 12634491 Common Rail Injector → (OE: 12658339, 12651170, HPP0008, HM10014, GDP104, 12641847) —