095000-5471
095000-5471 Denso Isuzu 4HK1 Injector: 8-97329703-4 Specs
8-97329703-4, 8-97329703-1, 8-97329703-2, 8-97329703-3, 8-97329703-0, 095000-5471, 095000-5470, 095000-5472, 095000-5473, 095000-5474Plate 29# / Denso G2 Valve PlateDLLA152P9471800 barProduct Overview
The DENSO 095000-5471 is an authentic original-equipment G2 common rail diesel fuel injector engineered specifically for Isuzu 4HK1 (4-cylinder, 5.2-liter) and 6HK1 (6-cylinder, 7.8-liter) turbocharged electronically controlled diesel engines. Meeting EPA Tier 3 and EU Stage IIIA non-road industrial emissions standards, this injector is the core combustion component deployed across Hitachi ZAXIS ZX200-3, ZX210-3, ZX240-3, ZX270-3, and ZX330-3 crawler excavators, Sumitomo SH200-5/SH240-5 excavators, Case CX210B/CX240B excavators, and Isuzu Forward medium-duty transport trucks. Operating at rail pressures up to 1800 bar (26,100 psi) delivered by Denso HP3/HP4 high-pressure fuel supply pumps, this injector incorporates a calibrated DLLA152P947 multi-hole nozzle (Denso part number 093400-9470) and a hardened Plate 29# electro-hydraulic spool control valve to achieve precise micro-pilot, main, and split post-injection cycles. Denso part number 095000-5471 supersedes previous production revisions 095000-5470, 095000-5472, 095000-5473, and 095000-5474, and corresponds directly to Isuzu OEM genuine part numbers 8-97329703-1, 8-97329703-2, 8-97329703-3, and 8-97329703-4 (clean format 8973297034). Universal aftermarket remanufactured part numbers include 095000-8901, 095000-8902, and 095000-8903. Each individual unit carries unique micro-flow calibration data encoded into a 30-character alphanumeric QR matrix; programming this code into the ECM with an Isuzu E-IDSS diagnostic scanner ensures exact cylinder balancing, optimized hydraulic cycle response, and maximum fuel efficiency across demanding earthmoving duty cycles.
CRITICAL WORKSHOP NOTICE: Always photograph or manually record the 30-digit Denso QR Compensation Code laser-etched onto the injector solenoid cap BEFORE installation. Once the injector is lowered into the cylinder head, this calibration code cannot be read. Denso 095000-5471 (Isuzu OEM 8-97329703-4) is the primary electro-hydraulic G2 common rail injector powering Isuzu 4HK1 (5.2L) and 6HK1 (7.8L) Tier 3 / Stage IIIA diesel engines in Hitachi ZAXIS ZX200-3, ZX240-3, and ZX330-3 excavators. Tighten the injector hold-down clamp bolt to 30 N·m (22 lb·ft) and the high-pressure fuel feed line nut to 30 N·m (22 lb·ft). Writing the 30-digit QR code into the engine ECM via Isuzu E-IDSS or Techstream diagnostic software is mandatory to avoid severe idle vibration, cylinder contribution imbalances, and black smoke under hydraulic load.
Vehicle & Engine Fitment
| Vehicle | Engine | Years |
|---|---|---|
| Hitachi ZAXIS ZX200-3 / ZX200LC-3 Crawler Excavator | Isuzu 4HK1 (5.2L) & 6HK1 (7.8L) Electronic Common Rail | 2006-2015 |
| Hitachi ZAXIS ZX240-3 / ZX250-3 Crawler Excavator | Isuzu 4HK1 (5.2L) & 6HK1 (7.8L) Electronic Common Rail | 2006-2015 |
| Hitachi ZAXIS ZX270-3 Crawler Excavator | Isuzu 4HK1 (5.2L) & 6HK1 (7.8L) Electronic Common Rail | 2006-2015 |
| Hitachi ZAXIS ZX330-3 / ZX350-3 Heavy Crawler Excavator | Isuzu 4HK1 (5.2L) & 6HK1 (7.8L) Electronic Common Rail | 2006-2015 |
| Sumitomo SH200-5 / SH210-5 / SH240-5 Excavator | Isuzu 4HK1 (5.2L) & 6HK1 (7.8L) Electronic Common Rail | 2006-2015 |
| Case CX210B / CX240B Crawler Excavator | Isuzu 4HK1 (5.2L) & 6HK1 (7.8L) Electronic Common Rail | 2007-2016 |
| JCB JS200 / JS210 / JS220 Hydraulic Excavator | Isuzu 4HK1 (5.2L) & 6HK1 (7.8L) Electronic Common Rail | 2006-2014 |
| Isuzu Forward / FTR / FVR Medium-Duty Truck | Isuzu 4HK1 (5.2L) & 6HK1 (7.8L) Electronic Common Rail | 2005-2016 |
Technical Specifications
| Specification | Value |
|---|---|
| SKU | 095000-5471 |
| Brand | DENSO |
| Type | G2 Common Rail Fuel Injector |
| OE Number | 8-97329703-4, 8-97329703-1, 8-97329703-2, 8-97329703-3, 095000-5470 |
| Injection System | Denso Common Rail System (CRS ECD-U2 / G2) |
| Operating PressureCore Spec | |
| Torque Spec | 30 N·m |
| Hold Down Torque | 30 N·m |
| Warranty | 12 Months |
| Emission Standard | EPA Tier 3 / EU Stage IIIA |
| Engine Family | Isuzu 4HK1 & 6HK1 (5.2L & 7.8L) |
| Coding Required | Yes (Denso 30-Digit QR Compensation Code / Isuzu E-IDSS) |
Installation Tips
Tools needed: Calibrated torque wrench (10-60 N·m range), Isuzu E-IDSS or Techstream diagnostic scan tool with J2534 VCI, Denso QR code reader or smartphone camera, Injector bore reamer and seat cleaning brush set, Lint-free industrial workshop swabs, Clean engine oil or assembly lubricant for O-rings, High-pressure fuel line socket (17 mm flare nut wrench), Compressed air line with rubber nozzle
- Before installation, photograph or transcribe the 30-digit alphanumeric Denso QR Compensation Code laser-engraved on the upper solenoid housing of each injector.
- Clean and inspect the cylinder head injector bore down to the copper sealing washer seat using a brass cleaning brush and specialized seat reamer.
- Blow out any loose carbon debris, rust particles, and cleaning fluid residue from the cylinder bore and the hold-down bolt hole using regulated compressed air.
- Install a brand-new, genuine Isuzu/Denso copper sealing washer onto the injector tip. Never reuse old washers and never install double washers.
- Apply a light film of clean engine oil to the new rubber O-ring mounted on the injector body to prevent pinching, tearing, or displacement during insertion.
- Carefully insert the injector into the cylinder head bore, rotating slightly until the nozzle locates into the combustion chamber and the hold-down clamp aligns correctly.
- Install the injector hold-down clamp and bolt. Tighten the clamp bolt evenly to an initial snug torque of 15 N·m, then apply the final torque of 30 N·m (22 lb·ft).
- Hand-thread the high-pressure fuel line sleeve nut onto the injector inlet fitting to ensure thread alignment, then torque the line nut to 30 N·m (22 lb·ft).
- Connect the injector solenoid electrical harness terminals and tighten the terminal retaining nuts to 2.5 N·m (22 lb·in); do not overtighten.
- Connect the diagnostic scanner, select Isuzu 4HK1/6HK1 engine management, navigate to Injector QR Code / Trim Data programming, and input the 30-digit calibration string for each cylinder.
- Prime the low-pressure fuel system via the manual priming pump on the fuel filter base until firm resistance is felt, then start the engine and verify zero fuel leaks at 1800 bar operating rail pressure.
Frequently Asked Questions
What happens if I replace Denso 095000-5471 injectors without coding the QR code into the ECM?
If new 095000-5471 injectors are installed without programming their 30-digit QR compensation codes, the engine ECM continues using the flow calibration curves of the previous injectors. This causes uneven cylinder torque contribution, harsh engine knock at idle, excessive black smoke during hydraulic pump load, and potential DTCs such as P1603 (EEPROM/Calibration Fault) or fuel trim deviation warnings.
Can Denso 095000-5471 interchange with 095000-8901 and 095000-5470?
Yes. Denso part number 095000-5471 is the latest production revision that supersedes 095000-5470, 095000-5472, 095000-5473, and 095000-5474. In the aftermarket remanufactured catalog, 095000-8901, 095000-8902, and 095000-8903 represent factory-certified exchange units with identical mechanical and electrical specifications, corresponding to Isuzu OE 8-97329703-4.
What are the exact torque specifications for the injector clamp bolt and fuel line on Isuzu 4HK1/6HK1 engines?
According to the official Isuzu 4HK1 and 6HK1 Workshop Manuals, the injector hold-down clamp bolt must be tightened to an initial seating torque of 15 N·m, followed by a final tightening torque of 30 N·m (22 lb·ft). The high-pressure fuel delivery pipe sleeve nut must also be torqued to 30 N·m (22 lb·ft). The solenoid terminal harness nuts require 2.5 N·m (22 lb·in).
Why is diesel fuel mixing with engine oil after replacing 095000-5471 injectors on a Hitachi ZX200-3?
On Isuzu 4HK1 engines, the injectors are located under the valve rocker cover. If fuel dilutes the crankcase oil, the three most common causes are: (1) pinched or damaged body O-rings during installation; (2) improper torque on the 1800 bar high-pressure fuel line sleeve nut (must be 30 N·m); or (3) leak-off rail sealing washer failure. Stop running the machine immediately to prevent engine bearing wipe-out.
Diagnostic Trouble Codes & Fault Protocols
Common diagnostic trouble codes (DTCs) triggered when this common rail injector experiences wear, circuit faults, or calibration drift:
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.
Technical Diagnostic & Service Protocols
Authoritative field procedures, diagnostic testing thresholds, and service SOPs for this assembly.