06E127025G
HITACHI 06E127025G Pompa Alta Pressione Audi S4 S5 A6 Q7 3.0T EA837
06E-127-025-G, 06E127025N, 06E127025AB, 06E127025J, HPP0007Integrated Fuel Metering Solenoid Valve N290-200 barPanoramica Prodotto
The Hitachi 06E127025G (aftermarket reference HPP0007, superseding part numbers 06E127025N, 06E127025AB, and 06E127025J) is the authentic original equipment high-pressure mechanical fuel pump engineered for Audi's celebrated 3.0-liter supercharged V6 TFSI engine family (EA837). Generating up to 200 bar (2,900 psi) of regulated direct injection fuel pressure, this cam-driven single-plunger pump powers high-performance executive vehicles including the Audi S4 (B8/B8.5 2010-2016), S5 (2010-2017), A6 C7 (2012-2018), A7 (2012-2018), Q7 3.0T (2011-2015), SQ5 (2014-2017), and select Porsche Cayenne and Panamera models.
Always verify the original manufacturer reference stamped on your component before ordering. For 06E127025G, inspect matching OE cross-references and ensure related high-pressure seals, followers, or grommets are renewed during service.
Applicazioni Veicolo e Motore
| Veicolo | Motore | Anni |
|---|---|---|
| Audi S4 / S5 B8 B8.5 | Audi / VW / Porsche EA837 3.0L V6 Supercharged TFSI (CGWB / CTUB / CREC) | 2010-2017 |
| Audi A6 C7 / A7 4G8 | Audi / VW / Porsche EA837 3.0L V6 Supercharged TFSI (CGWB / CTUB / CREC) | 2012-2018 |
| Audi Q7 4L / SQ5 8R | Audi / VW / Porsche EA837 3.0L V6 Supercharged TFSI (CGWB / CTUB / CREC) | 2011-2017 |
| Porsche Cayenne / Panamera | Audi / VW / Porsche EA837 3.0L V6 Supercharged TFSI (CGWB / CTUB / CREC) | 2011-2018 |
Specifiche Tecniche
| Specifica | Valore |
|---|---|
| Tipo di sistema | Hitachi / Audi FSI 200-Bar High Pressure Direct Injection |
| Maximum Operating Fuel Pressure | 200 bar (2,900 psi / 20.0 MPa regulated system pressure) |
| Pump Drive Configuration | Tri-Lobe Camshaft Follower Driven via Hardened Roller Tappet |
| Quantity Control Solenoid | Integrated Electronic Fuel Metering Valve (N290 PWM Modulated) |
| Pump Mounting Flange Torque | 20 N·m (15 lb-ft) tightened evenly in criss-cross stages |
| High-Pressure Flare Nut Tube Torque | 27 N·m (20 lb-ft) rigid stainless steel delivery pipe |
| Low-Pressure Supply Line Torque | Banjo fitting 15 N·m / Quick-connect click retention |
| Internal Piston Seals Architecture | Multi-Lip Dynamic Fluorocarbon Piston Seal with Fuel Scavenge Port |
| Manufacturer | Hitachi Astemo, Ltd. (Tier-1 OEM for Audi AG & Volkswagen Group) |
| Production Reference | Hitachi HPP0007 / Audi OE 06E 127 025 G |
| Pressione di esercizioSpecifica Chiave |
Pompa alta pressione abbinata (Gruppo circuito carburante)
Funziona sullo stesso circuito ad alta pressione Common Rail. In caso di bassa pressione rail (P0087), verificare la portata della pompa prima di sostituire gli iniettori.
Istruzioni di montaggio
- [
- {
- "step": 1,
- "title": "Low & High Pressure Fuel System Depressurization",
- "instruction": "Pull 15A low-pressure fuel pump fuse from passenger dashboard fuse block. Start engine and let it run until it stalls from fuel depletion, then disconnect negative battery cable."
- },
- {
- "step": 2,
- "title": "Intake Ducting & Supercharger Area Clearance",
- "instruction": "Disconnect mass air flow sensor wiring and remove intake bellows ducting. Clear access to the rear driver-side cylinder head where the mechanical HPFP resides."
- },
- {
- "step": 3,
- "title": "N290 Solenoid Harness & Fuel Lines Disconnection",
- "instruction": "Unclip wiring plug from the N290 fuel metering valve. Crack open high-pressure flared fitting slowly with a 17mm flare nut wrench while wrapping a shop towel around the union."
- },
- {
- "step": 4,
- "title": "Flange Fasteners Removal & Roller Tappet Inspection",
- "instruction": "Back out mounting bolts in alternating half-turns to release internal plunger spring load squarely. Extract pump and inspect internal roller cam follower for surface spalling or binding."
- },
- {
- "step": 5,
- "title": "O-Ring Lubrication, Installation & Sequence Torquing",
- "instruction": "Coat new Viton housing O-ring and roller tappet with fresh synthetic engine oil. Seat pump into bore and torque flange bolts evenly to 20 N\u00b7m (15 lb-ft). Torque high-pressure pipe flare nut to 27 N\u00b7m (20 lb-ft)."
- }
- ]
Codici Guasto (DTC) e Protocolli Diagnostici
Codici guasto diagnostici (DTC) comuni generati quando questo iniettore common rail presenta usura, problemi ai circuiti o scostamenti:
Fuel Rail / System Pressure Too Low
Excessive internal backleak from worn control valve seats drops common rail pressure below target under engine load.
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.
Cylinder Misfire & Balancing Deviation
Carbon-clogged nozzle spray holes or missing IMA calibration causes uneven cylinder contribution. Recode ECM and verify washer seating.
Fuel Rail / System Pressure Too High
Spill line backpressure or stuck metering valve prevents rail depressurization, creating overpressure risks under load.
Protocolli Tecnici di Diagnosi & Assistenza
Procedure d'officina verificate, valori soglia di test e linee guida operative per questo assieme.