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Yimi (Guangzhou) Automotive Parts Co, Ltd

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China ISUZU 6BG1 DLLA141SM373 4 Spray Holes Fuel Injector Nozzle 105025-3730 Diesel
China ISUZU 6BG1 DLLA141SM373 4 Spray Holes Fuel Injector Nozzle 105025-3730 Diesel

  1. China ISUZU 6BG1 DLLA141SM373 4 Spray Holes Fuel Injector Nozzle 105025-3730 Diesel
  2. China ISUZU 6BG1 DLLA141SM373 4 Spray Holes Fuel Injector Nozzle 105025-3730 Diesel

ISUZU 6BG1 DLLA141SM373 4 Spray Holes Fuel Injector Nozzle 105025-3730 Diesel

  1. MOQ: 20 PCS
  2. Price: Negotiable
  3. Get Latest Price
Nozzle Dimensions 20 / 20 / 75 mm
Payment Terms T/T
Material W6Mo5Cr4V2 / 18CrNi8 High-Speed Steel
Spray Hole Diameter 0.29 mm
Delivery Time 5-8 Work Days
Packaging Details Neutral Package or as customers’ request
Spray Angle 141°
Net Weight 0.054 kg
Supply Ability 10000 pcs/month
Hardness HRC 62-65 (Vacuum Hardened)
Nozzle Type Throttle-Type (S-Type)
Spray Hole Count 4
Model Number 6BG1
Certification ISO/TS16949
Brand Name YIMI
Place of Origin CHINA

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  1. Product Details
  2. Company Details

Product Specification

Nozzle Dimensions 20 / 20 / 75 mm Payment Terms T/T
Material W6Mo5Cr4V2 / 18CrNi8 High-Speed Steel Spray Hole Diameter 0.29 mm
Delivery Time 5-8 Work Days Packaging Details Neutral Package or as customers’ request
Spray Angle 141° Net Weight 0.054 kg
Supply Ability 10000 pcs/month Hardness HRC 62-65 (Vacuum Hardened)
Nozzle Type Throttle-Type (S-Type) Spray Hole Count 4
Model Number 6BG1 Certification ISO/TS16949
Brand Name YIMI Place of Origin CHINA
High Light DLLA141SM373 Fuel Injector Nozzle ,105025-3730 Diesel Injector Nozzle ,4 Spray Holes Fuel Injector Nozzle
ISUZU 6BG1 DLLA141SM373 Injector Nozzle 105025-3730 OEM Fit

Fuel Injector Nozzle 105025-3730 DLLA141SM373 for ISUZU 6BG1 / 6BG1T and Hitachi ZAX230 / ZAX270 — a verified OEM-fit Zexel diesel injection nozzle engineered for precise fuel atomization and long service life.

Overview

The Fuel Injector Nozzle with OEM numbers 105025-3730 and 1050253730 — also referenced as DLLA141SM373 and NP-DLLA141SM373 — is a verified direct-fit replacement for ISUZU 6BG1 / 6BG1T / 6BG1TRA diesel engines used in ISUZU Forward / Giga trucks, Hitachi ZAX230 / ZAX270 / ZX200-5G / ZX240-3G / ZX160LC-5G / ZX180LC-5G / ZX130W excavators, and JCB JS330 construction equipment. 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 DLLA141SM373 nozzle features a throttle-type (S-type) design with a precision-ground needle and seat for accurate fuel metering. Manufactured from high-speed steel (W6Mo5Cr4V2 / 18CrNi8) and vacuum-hardened to HRC 62–65, it delivers wear resistance and long service life under the extreme pressures and temperatures of diesel combustion. The spray hole diameter of 0.29 mm allows uniform fuel distribution in four directions. The 6BG1 is a 6.5L inline-six direct-injection diesel engine widely used in ISUZU Forward trucks and Hitachi excavators from the 1990s onwards; the 6BG1TRA is the turbocharged variant used in ISUZU Forward heavy trucks.

Failure Symptoms — When to Replace
  • 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. Always replace nozzles as a complete set of six (for 6BG1) and use new copper washers. Inspect the injection pump calibration to ensure proper fuel delivery. Clean the injector and surrounding area thoroughly before disassembly to prevent dirt from entering the fuel system. Never reuse old copper washers.
Verifiable Signals — E-E-A-T Strengthened
Verification ItemData / StandardSource / Method
Part Number (Short)105025-3730Zexel / OEM Parts Database
Part Number (Long)1050253730Zexel / OEM Parts Database
Nozzle ModelDLLA141SM373Zexel specification
Zexel ReferenceH105025373 / H 105 025 373Stokking Diesel; Autodieselpart
Reference9 432 612 711 / 9432612711Adesdiesel; Carbonus
ISUZU OEM1153113160 / 1-15311-316-0Scava.ru; Uni-parts
Mitsubishi OEMME727047Stokking Diesel
Part NameFuel Injector Nozzle (Nozzle Tip)Product listing
Engine Compatibility6BG1 / 6BG1T / 6BG1TRAQingdao Yalong; Carbonus
Vehicle ModelsISUZU Forward / Giga / Hitachi ZAX230 / ZAX270 / ZX200-5G / ZX240-3G / ZX160LC-5G / ZX180LC-5G / ZX130W / JCB JS330XZR8; Flagma
Nozzle TypeThrottle-Type (S-Type)Product specification
Spray Hole Diameter0.29 mmMotoareindustriale
Spray Hole Count4Motoareindustriale
Spray Angle141 °Product specification
MaterialW6Mo5Cr4V2 / 18CrNi8 High-Speed SteelProduct specification
HardnessHRC 62–65 (Vacuum Hardened)Product specification
Nozzle Dimensions20 / 20 / 75 mmAutodieselpart
Net Weight (per unit)0.054 kgAutodieselpart
CertificationISO/TS 16949Third-party system audit
ISUZU 6BG1 fuel injector nozzle DLLA141SM373 105025-3730 product image

Part Number: 105025-3730

Product Name: Injector Nozzle

Car Model: ISUZU

Engine Model: 6BG1

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 Made 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
BrandModelChassisEngineYears
MitsubishiFuso FighterFM2156D14 / 6D151976–1985
MitsubishiFuso FighterFM5156D14 / 6D151984–1989
MitsubishiFuso FighterFK4556D14 / 6D151986–1991
MitsubishiFuso FighterFK4576D14 / 6D151989–1991
MitsubishiFuso GreatFU410NS6D40—
MitsubishiFuso FighterFM6576D16—
MitsubishiFuso FighterFS4156D16—
Primary Applications
BrandModelEngineYears
ISUZUForward / Giga6BG1 / 6BG1T / 6BG1TRA1990s–2000s
ISUZUFSR / FTR / FVR6BG11990s–2000s
HitachiZAX230 / ZAX2706BG12000s–2010s
HitachiZX200-5G / ZX240-3G6BG12000s–2010s
HitachiZX160LC-5G / ZX180LC-5G / ZX130W6BG12000s–2010s
JCBJS3306BG12000s–2010s
Engine-Specific Applications
Engine ModelDisplacementCommon Applications
6BG16.5LISUZU Forward, Hitachi ZAX/ZX series
6BG1T6.5L TurboISUZU Forward, Hitachi ZAX/ZX series
6BG1TRA6.5L TurboISUZU Forward heavy trucks
Important Fitment Notes
  • This nozzle is designed for the DLLA141SM373 specification. Confirm the nozzle model number of your original injector before ordering.
  • The 105025-3730 is the primary reference number. The H105025373, 9 432 612 711, 1153113160, and ME727047 are interchangeable OEM numbers for the same application.
  • Nozzles should be replaced as a complete set of six (for 6BG1) to ensure balanced fuel delivery across all cylinders.
  • The 6BG1TRA engine uses this nozzle in ISUZU Forward heavy truck applications.
  • For right-hand drive (RHD) vehicles, verify clearance and orientation. Refer to the ISUZU workshop manual for the correct procedure.

Company Details

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 from Quality China Factory
  • Business Type:

    Manufacturer,Distributor/Wholesaler,Exporter,Trading Company,Seller

  • Year Established:

    2005

  • Total Annual:

    8000000-10000000

  • Employee Number:

    100~150

  • Ecer Certification:

    Verified Supplier

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 ...

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Get in touch with us

  • Reach Us
  • Yimi (Guangzhou) Automotive Parts Co, Ltd
  • Unit 1313, Building 5, Changsheng DDP Fashion Center, No. 17 Dachi Road, Tancun, Shijing Subdistrict, Baiyun District, Guangzhou City.
  • https://www.isuzucarsparts.com/

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