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The Common Rail Fuel Injector with OEM number 8-98011604-1 (also listed as 8980116041, 8-98011604-5) is a verified OEM-grade direct replacement for ISUZU 4JJ1 series 3.0L diesel engines. Manufactured by Denso (model 095000-6980 / DCRI106980) to stringent OEM specifications.
OEM Specification – Verified by ISUZU OEM part numbers 8-98011604-1, 8980116041, and Denso model 095000-6980 / DCRI106980
Precision Engineered – Weight verified at 680 g (net) / 880 g (gross) across multiple supplier catalogs
Proven Durability – Manufactured by Denso with precision machining to original standards
OEM Cross-Reference Verified – Replaces multiple ISUZU and Denso part numbers
Failure Symptoms
If your common rail injector is failing, you may experience one or more of the following symptoms:
Rough Idle or Uneven Running – Engine idles roughly with noticeable vibration or diesel knock
Loss of Engine Power – Significant reduction in power and acceleration, especially under load
Excessive Exhaust Smoke – Black smoke under load or white smoke indicating faulty injector spray pattern
Hard Starting / Extended Cranking – Difficulty starting the engine, especially when cold
Increased Fuel Consumption – Noticeable drop in fuel economy due to inefficient combustion
Diagnostic Trouble Codes – DTCs related to injector circuit faults or fuel rail pressure
Engine Misfire – One or more cylinders not firing consistently
⚠️ Important: The 4JJ1 common rail system is highly sensitive to contaminated or poor-quality diesel fuel. Prompt replacement with a quality OEM injector is essential to restore engine performance and reliability.
Precision Machining to Original Standards
Ensures fuel injection efficiency and engine power output
High-Pressure Common Rail Capability
Enables precise multi-injection events for efficient combustion
Denso OEM Manufacturing
Produced by leading global OEM supplier for diesel fuel injection systems
Complete Injector Assembly
Supplied as complete unit including solenoid, nozzle, and all internal components
Broad Compatibility
Fits ISUZU trucks, Holden Colorado/Rodeo, and construction equipment
Direct Replacement Fitment
No modifications required – engineered as direct match for original injector
100% New – No Core Charge
Guarantees zero wear and immediate fuel delivery performance
Quality Control & Verification
QC Item
Verification Method
Dimensional Accuracy
Precision inspection to verify all mounting dimensions match OE blueprint specifications
Material Composition
High-grade steel analysis to verify structural integrity and pressure resistance
Flow Rate Test
Dynamic flow-bench testing to verify injection quantity and spray pattern
Leakage Test
100% high-pressure leak test to guarantee zero internal/external fuel leakage
Solenoid Response Test
Electrical response time verification to ensure precise injection timing control
Durability Cycle Test
500+ hour fatigue testing to verify long-term reliability under extreme pressures
Final Assembly Inspection
100% visual and functional inspection before packaging
Installation & Maintenance Recommendations
⚠️ IMPORTANT: Professional Installation Highly Recommended
Common rail injector replacement requires depressurization of the fuel system, extreme cleanliness, and expert knowledge of common rail systems.
Pre-Installation Checklist
Depressurize the fuel system before starting work
Disconnect the negative battery terminal
CRITICAL: The 4JJ1 common rail system is highly sensitive to contaminated fuel – always use clean, high-quality fuel and replace fuel filter simultaneously
CRITICAL: Common rail injectors must be coded to each cylinder using diagnostic scan tool
Quantity Required: 4 injectors for 4JJ1 engines
Replace all 4 injectors simultaneously for optimal performance and balanced cylinder contribution
Recommended: Replace high-pressure fuel lines simultaneously, especially if vehicle has traveled over 120,000-150,000 km
Installation Guidelines
Depressurize fuel system and disconnect negative battery terminal
Remove intake manifold and fuel rail to access injectors
Disconnect electrical connectors from each injector
CRITICAL: Never bend or kink high-pressure fuel lines. If removal necessary, replace with new units
Carefully remove injector retaining clamps and pull each injector from cylinder head
Clean injector bores in cylinder head thoroughly
CRITICAL: Install new copper gaskets and O-rings on new injectors
CRITICAL: Lubricate new O-rings with clean diesel fuel before installation
Install new injectors into cylinder head
Install fuel rail and injector clamps
CRITICAL: Torque injector clamp bolts to manufacturer's specified torque settings
Reconnect all electrical connectors
Reconnect battery and prime fuel system
CRITICAL: Bleed air from fuel system thoroughly to remove all air
Start engine and check for fuel leaks around injectors
CRITICAL: Code each injector to its respective cylinder using diagnostic scan tool
Clear any diagnostic trouble codes
Maintenance Schedule
Inspection: Every 50,000 km / 12 months. Check for rough idle, misfires, or increased fuel consumption
Fuel Filter Replacement: Every 20,000-30,000 km – regular filter changes are the single biggest factor in injector longevity
Replacement: Recommended at 150,000-200,000 km or immediately if failure symptoms appear
Note: The 4JJ1 common rail system is highly sensitive to fuel quality – always use clean, high-quality diesel fuel
Packaging & Supply
Packaging: Each injector securely packed in protective box for export shipment
Package Contents: 1 Fuel Injector (Copper gasket and O-rings sold separately)
Pack Options: Sold individually or as complete set of 4
Net Weight: Approx. 680 g/pc
Gross Weight: Approx. 880 g/pc
MOQ: Flexible for trial orders and distributor orders
Warranty: 12 Months
Suitable for: Wholesale distributors, diesel repair shops, fleet owners, and construction equipment service centers
Yimi (Guangzhou) Automotive Parts Co., Ltd.
Located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality ... Yimi (Guangzhou) Automotive Parts Co., Ltd.
Located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality ...
