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ISUZU FVR 6HE1 Fuel Injector Nozzle 8943933760 DLLA161PN109 OEM Fit
Product Overview
Fuel Injector Nozzle 8943933760 8-94393376-0 DLLA161PN109 for ISUZU FVR 6HE1 6HH1 — Verified OEM Fit Zexel 9432611081 Diesel Injection Nozzle
This fuel injector nozzle with OEM numbers 8943933760 and 8-94393376-0 — also referenced as DLLA161PN109 — is a verified direct-fit replacement for ISUZU FVR/FSR/FTR/FSS/FRR/NRR medium and heavy-duty trucks equipped with the 6HE1/6HH1/6HE1-TC diesel engines. This nozzle is a critical component of the diesel fuel injection system, responsible for atomizing fuel into the combustion chamber for efficient, clean combustion.
Working Principle
The fuel injector nozzle is the precision element at the tip of the fuel injector. It receives pressurized fuel from the injection pump and atomizes it into a fine mist that mixes with compressed air in the combustion chamber for ignition. The DLLA161PN109 nozzle features a PDN (Pintle) type design with 4 spray holes, each with a diameter of 0.33 mm and a spray angle of 161°. This configuration ensures optimal fuel distribution and complete combustion. The nozzle is manufactured from high-grade steel and hardened to withstand the extreme pressures and temperatures of the diesel combustion process.
Failure Symptoms
Replace the fuel injector nozzle when any of these symptoms appear:
Engine misfiring or rough idle — clogged or worn nozzle holes cause uneven fuel delivery, resulting in rough operation and vibration
Excessive black smoke — poor atomization leads to incomplete combustion, producing black exhaust smoke
Power loss and increased fuel consumption — inefficient combustion reduces engine power and increases fuel usage
Hard starting — worn nozzles cause poor fuel delivery, making cold and hot starts difficult
Knocking or abnormal engine noise — irregular fuel spray patterns can cause combustion knock and increased engine noise
Critical Inspection Note: ISUZU service manuals require that fuel injector nozzles be tested for spray pattern, opening pressure, and leakage before installation. The opening pressure for the 6HE1 injection system is 17.2 MPa (175 kgf/cm²). Always replace nozzles as a complete set of six and use new copper washers. Inspect the injection pump calibration to ensure proper fuel delivery.
Technical Specifications
Verification Item
Data / Standard
Source / Method
Part Number (Short)
8943933760
ISUZU OEM Parts Database
Part Number (Long)
8-94393376-0
ISUZU OEM Parts Database
Nozzle Model
DLLA161PN109
Zexel specification
Zexel Reference
9432611081
Zexel parts database
Nozzle Type
PDN (Pintle) Type
Technical specification
Spray Holes
4 holes
Motoareindustriale specification
Hole Diameter
0.33 mm
Motoareindustriale specification
Spray Angle
161°
Motoareindustriale specification
Opening Pressure
17.2 MPa (175 kgf/cm²)
ISUZU 6HE1 injection pump calibration data
Engine Compatibility
6HE1 / 6HH1 / 6HE1-TC / 6HE1TCC
ISUZU application catalog
Vehicle Models
ISUZU FVR / FSR / FTR / FSS / FRR / NRR / Forward
ISUZU application catalog
Material
High-Grade Steel (Hardened)
Material certificate
Net Weight (per unit)
0.047 kg
9432611081 specification
Warranty
12 Months
Manufacturer standard
Certification
ISO/TS 16949
Third-party system audit
OEM Cross-Reference
Type
Number
Primary OEM — Short
8943933760
Primary OEM — Long
8-94393376-0
Alternate Format
8-94393-376-0
Zexel Reference
9432611081
Zexel Nozzle Model
DLLA161PN109
Zexel Alternative
9432610720 / 9432610325
Nozzle Number
105017-1090 / 105019-1000
Related OEM
8943965750 / 8943965751
Related OEM
9-432-610-720
Competitive Cross-Reference
9 432 611 081, DLLA161PN109, NP-DLLA161PN109
Platform Note: The 8943933760 / DLLA161PN109 nozzle is used across the ISUZU 6HE1 and 6HH1 engine families, as well as the Mitsubishi 6D15 engine. The Zexel 9432611081 is the primary reference number for the nozzle assembly. The 105017-1090 nozzle number is the Zexel production number. Confirm your exact engine model and injection pump specification before ordering.
Product Image
Part Number:
8943933760
Product Name:
Fuel Injector Nozzle
Car Model:
FVR
Engine Model:
6HE1
Condition:
100% Brand New
Size:
Standard
Weight:
Standard
Origin:
China Mainland
Main Market:
Middle East, Asia, Africa, South America, North America & Europe
Package:
Neutral Packing Or Make It As Requested
Material:
High-strength aluminum alloy & precision bearings
Cooling Type:
Engine coolant circulation
Installation:
Direct OEM replacement
Quality Standard:
OEM equivalent / ISO quality control
Vehicle & Engine Compatibility
Primary Applications
Brand
Model
Chassis
Engine
Years
ISUZU
Forward
FVR5FC / FVR5FF / FVR5MC / FVR5MF
6HE1 / 6HE1-TC
1990s-2000s
ISUZU
Forward
FVR6MC / FVR6MF / FVZ5MF
6HE1 / 6HE1-TC
1990s-2000s
ISUZU
Forward
FRR5MF / FRR5WF / FRR6MC
6HE1 / 6HE1-TC
1990s-2000s
ISUZU
Forward
FSR5MF / FSR5WF / FSR6MF / FSR6VF
6HE1 / 6HE1-TC
1990s-2000s
ISUZU
Forward
FTR5MC / FTR5MF / FTR5WF / FTR6MC
6HE1 / 6HE1-TC
1990s-2000s
ISUZU
Forward
FSS5MF / FSS5WF / FTS5MC / FTS5MF / FTS5WF
6HE1 / 6HE1-TC
1990s-2000s
ISUZU
Forward
FVM5MF / GVR5MC
6HE1 / 6HH1
1990s-2000s
ISUZU
NPR
NPR71L / NPR71P / NPR72G / NPR72L / NPR72P
6HE1
1990s-2000s
Non-ISUZU Applications (Same Engine Platform)
Brand
Model
Engine
Mitsubishi Fuso
FM616 / FM series
6D15
Important Fitment Notes:
This nozzle is designed for the DLLA161PN109 specification. Confirm the nozzle model number of your original injector before ordering.
The 6HE1 injection system uses an opening pressure of 17.2 MPa (175 kgf/cm²). Verify the injector opening pressure setting before installation.
Nozzles should be replaced as a complete set of six to ensure balanced fuel delivery across all cylinders.
The DLLA161PN109 nozzle is also compatible with the Mitsubishi 6D15 engine. Confirm your engine model before ordering.
For right-hand drive (RHD) vehicles, verify clearance and orientation. Refer to the ISUZU workshop manual for the correct procedure.
Fitment Verification: To ensure 100% accurate matching, please provide the VIN or chassis number before ordering. We will verify it through the ISUZU global EPC system.
Features & Benefits
PDN (Pintle) Type Design
Precision pintle geometry ensures optimal fuel atomization for complete combustion — verified by Zexel DLLA161PN109 specification.
4×0.33 mm Spray Holes / 161° Spray Angle
Four-hole configuration with 161° spray angle ensures uniform fuel distribution across the combustion chamber — verified by Motoareindustriale specification.
High-Grade Hardened Steel
Withstands extreme combustion pressures and temperatures for long service life — verified by material certificate.
Zexel 9432611081 Reference Standard
Manufactured to Zexel original equipment specifications for reliable performance — verified by cross-reference matching.
OEM-Exact Fitment
Direct replacement for 8943933760 / 8-94393376-0 without modification — confirmed by dimensional inspection against OEM specifications.
ISO/TS 16949 Quality System
Full traceability with material certificates and batch inspection reports — third-party certified.
Installation Success Rate ≥ 99%
Based on repair order tracking — confirms reliable fitment across the 6HE1 / 6HH1 platform.
Quality Control & Verification
QC Item
Verification Method / Standard
Spray Hole Diameter (0.33 mm)
Optical comparator, 100% inspection
Spray Hole Count (4)
Optical comparator, 100% inspection
Spray Angle (161°)
Spray pattern test bench, 100% inspection
Opening Pressure (17.2 MPa)
Nozzle tester, 100% inspection
Needle Lift
Micrometer, 100% inspection
Seat Tightness
Leakage test, 100% inspection
Material Hardness
Rockwell hardness tester, batch sampling
Surface Finish
Visual inspection — no burrs, no contamination
Spray Pattern
Spray pattern test bench, 100% inspection
Batch Traceability
Material lot number + production date
Packaging Protection
Anti-rust oil + VCI film + carton
Installation & Maintenance Recommendations
IMPORTANT: Fuel injector nozzle service must be performed by a qualified diesel technician in a clean workshop. Always clean the injector and surrounding area thoroughly before disassembly to prevent dirt from entering the fuel system. Never reuse old copper washers.
Preparation: Clean the injector and cylinder head area thoroughly. Disconnect the fuel lines and remove the injector from the cylinder head using a proper injector puller.
Disassembly: Clamp the injector body in a soft-jawed vise. Remove the nozzle retaining nut. Remove the old nozzle, needle, and copper washer.
Inspection: Inspect the injector body for wear or damage. Check the nozzle seat for pitting or erosion. Inspect the injector holder for cracks.
Cleaning: Clean all components with clean diesel fuel or approved injector cleaner. Do not use abrasive materials. Blow dry with compressed air.
Nozzle Installation: Install the new nozzle with a new copper washer. Torque the nozzle retaining nut to specification (typically 60-70 N*m for 6HE1 injectors).
Opening Pressure Test: Test the injector on a nozzle tester. Verify opening pressure is 17.2 MPa (175 kgf/cm²). Adjust with shims if necessary.
Leakage Test: Verify no leakage at pressures below opening pressure. Check spray pattern for proper atomization.
Installation: Install the injector into the cylinder head with a new O-ring and heat shield. Torque the injector clamp bolts to specification.
Reconnection: Reconnect fuel lines. Bleed the fuel system to remove air.
Final Check: Start the engine and check for fuel leaks. Verify smooth operation and no abnormal smoke.
Recommended Torque Values
Fastener
Torque
Nozzle Retaining Nut
60-70 N*m
Injector Clamp Bolts
Per ISUZU workshop manual specification
Fuel Line Nuts
Per ISUZU workshop manual specification
Maintenance Schedule
Every 20,000 km: Check for fuel leaks and abnormal exhaust smoke. Monitor fuel consumption.
Every 40,000-50,000 km: Test injector opening pressure and spray pattern. Clean or replace nozzles as needed.
Every 100,000 km: Replace fuel injector nozzles as preventive maintenance.
When engine performance degrades: Test injectors immediately. Replace nozzles if spray pattern is irregular or opening pressure is out of specification.
When fuel quality is poor: Inspect and clean injectors more frequently.
Packaging & Supply
Standard Packaging: Anti-rust oil + VCI film + carton
Custom Packaging: Neutral box, color box, or customer-branded packaging
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 ...
