BOSCH
06H127025K
View Specs
SolenoidBosch HDP5 / HDP6 Gasoline Direct Injection High-Pressure Pump (200 bar)Euro 5
BOSCH 06H127025K High Pressure Fuel Pump Volkswagen Golf 6 GTI CC Passat Tiguan Audi A4 B8 A5 Q5 2.0 TSI TFSI EA888 Gen 2 0261520055
OE REFERENCE
06H127025Q, 06H127025P, 06H127025M, 0261520055CONTROL VALVE
-NOZZLE
-RAIL PRESSURE
200 barEMISSIONEuro 5 / ULEV II
WARRANTY12 Months
02
Vehicle & Engine Fitment
| Vehicle | Engine | Years |
|---|---|---|
| Volkswagen Golf VI GTI 2.0 TSI | Volkswagen / Audi EA888 Gen 1 & Gen 2 (1.8L & 2.0L TSI / TFSI CCTA / CAEB / CDNC) | 2009-2013 |
| Audi A4 B8 2.0 TFSI | Volkswagen / Audi EA888 Gen 1 & Gen 2 (1.8L & 2.0L TSI / TFSI CCTA / CAEB / CDNC) | 2008-2015 |
| Audi Q5 8R 2.0 TFSI | Volkswagen / Audi EA888 Gen 1 & Gen 2 (1.8L & 2.0L TSI / TFSI CCTA / CAEB / CDNC) | 2009-2015 |
03
Technical Specifications
| Specification | Value |
|---|---|
| part_number | 06H127025K |
| oem_reference | 06H127025K |
| manufacturer | BOSCH |
| system_type | High Pressure Fuel Pump |
| pressure_rating | 200 bar (2900 psi) |
| operating_temperature | -40°C to +135°C |
| flange_mount_torque | 20 N-m (15 lb-ft) |
| high_pressure_line_torque | 27 N-m (20 lb-ft) |
| diagnostic_dtc | P0087, P0088, P2293, P0300 |
| Operating PressureCore Spec |
CIRCUIT ASSEMBLY
Matched High-Pressure Fuel Injectors (Fuel Circuit Assembly)
Directly supplied by this high-pressure pump. Verify injector backleak balance if rail pressure fails to build during engine cranking.
BOSCHExact Engine & Chassis Match
06H906036QGasoline Direct Injection (GDI) • 150 bar
🚙 Audi A4 (B8) (CAEB)
BOSCHExact Engine & Chassis Match
06J906036NGasoline Direct Injection (GDI) • 150 bar
🚙 Audi A4 (B8) (CAEB)
BOSCHExact Engine & Chassis Match
06H906036GGasoline Direct Injection (GDI) • 150 bar
🚙 Engine Code CAEB
04
Installation Tips
- Depressurize the fuel system completely via diagnostic scan tool or by removing the fuel pump fuse prior to line disassembly.
- Clean all surrounding bracket areas thoroughly using residue-free brake cleaner to prevent abrasive particulate ingress.
- Inspect the mechanical camshaft lobe and roller follower or clean injector bore seating surfaces before hardware alignment.
- Install component using fresh factory O-rings or Teflon combustion chamber seals lubricated only with clean motor oil.
- Torque mounting flange fasteners in alternating increments to 20 N-m (15 lb-ft).
- Torque high-pressure hydraulic tube fittings using a calibrated flare nut wrench to 27 N-m (20 lb-ft).
- Prime low-pressure fuel circuit, cycle ignition key 3-4 times, and inspect for high-pressure hydraulic leaks before road test.
Tips & Warnings:
- Always replace single-use high-pressure metal fuel lines and micro-filter seals whenever disconnected.
- Verify camshaft driving lobe surfaces for scoring or flat spots before installing any mechanical pump.
- Reset long-term and short-term fuel trim adaptations via OBD-II diagnostic scanner after physical replacement.
05
Diagnostic Trouble Codes & Fault Protocols
Common diagnostic trouble codes (DTCs) triggered when this common rail injector experiences wear, circuit faults, or calibration drift:
P0087Critical
Fuel Rail / System Pressure Too Low
Excessive internal backleak from worn control valve seats drops common rail pressure below target under engine load.
P0201 - P0208High
Injector Circuit Malfunction / Open Circuit
Solenoid coil resistance drift (0.2-0.5 Ω) or piezo stack degradation triggers driver stage shutdown on affected cylinders.
P0300 / P0301+High
Cylinder Misfire & Balancing Deviation
Carbon-clogged nozzle spray holes or missing IMA calibration causes uneven cylinder contribution. Recode ECM and verify washer seating.
P0088High
Fuel Rail / System Pressure Too High
Spill line backpressure or stuck metering valve prevents rail depressurization, creating overpressure risks under load.
WORKSHOP PROTOCOLS
Technical Diagnostic & Service Protocols
Authoritative field procedures, diagnostic testing thresholds, and service SOPs for this assembly.
COMMON RAIL WORKSHOP DIAGNOSTICS
Read Technical ProtocolCommon Rail High-Pressure Pump Diagnostics Guide
COMMON RAIL WORKSHOP DIAGNOSTICS
Read Technical ProtocolFuel Metering Valve (IMV/SCV) Diagnostics Guide
OBD-II DIAGNOSTIC PROTOCOL
Read Technical ProtocolP0087 Low Rail Pressure Diagnosis Guide
COMMON RAIL WORKSHOP DIAGNOSTICS
Read Technical Protocol