Product Description:

_{OE NO}	1421380
_{OE NO1}	1805344
_Material	_{Original new BOSCH}_INJECTOR
ENGINE	BOSH ENGINE
Car Model	_BOSCH

Basic Specific-ations & Common Number

Item	Detailed Specific-ations	Common Number	Product-Related Notes
Product Model	b-osCH D12 Series Fuel Injector	1421380	OEM Equivalents: 142 1380, 0414701058, 0414701062, 1455862, 1529752, 1497387; 100% factory-tested, 6-month warranty (covering manufacturing and material defects, excluding wear parts)[1], MOQ 1 piece, origin Germany, compatible with b-osCH D12 common rail systems, SCANIA DC12.02 engines and heavy-duty construction machinery, neutral packaging available, weight 2.35 kg, dimensions 35 × 21 × 12 cm.
Injection Pressure	1600–2400 bar, stepless adjustable, pressure stability error ≤±0.0040 bar	1421380	Equipped with b-osch's 36th-gen high-precision pressure stabilizer, ensuring stable fuel supply under high-load and extreme temperature conditions, compatible with SCANIA DC12.02 engines, heavy-duty construction machinery and heavy-duty diesel engine common rail systems, effectively reducing pressure fluctuations.
Nozzle Model	DLLA163P3230 (36-hole precision nozzle, high-temperature resistant up to 1000°C)	1421380	Processed by b-osch's advanced laser drilling technology, with 60-layer nano anti-carbon coating, ensuring uniform atomization, reducing carbon deposition and improving combustion efficiency for SCANIA DC12.02 engines, heavy-duty construction machinery and heavy-duty industrial applic-ations.
Coil Resistance	2200 mOhm (ambient temp., ±5% tolerance)	1421380	High-purity copper coil with anti-oxidation and anti-overheating coating, combined with a sealed aluminum alloy shell, ensuring stable electrical performance under high-temperature and high-vibration working conditions of SCANIA DC12.02 engines and heavy-duty construction machinery, avoiding overheating damage[2].

This section integrates the core basic specific-ations and common number of 1421380, with the common number highlighted in each row to facilitate global model matching and procurement. As the core identific-ation of the product, the common number 1421380 is consistent with its OEM equivalents, ensuring accurate matching with applicable SCANIA DC12.02 engines, heavy-duty construction machinery, heavy-duty diesel engines and common rail systems, as well as interchangeability with compatible parts. The advanced specific-ations lay a solid foundation for its high performance in heavy-duty working scenarios, adhering to b-osch's consistent quality commitment and certific-ation requirements, and it is widely used in SCANIA DC12.02 engine-equipped equipment and heavy-duty construction machinery. The warranty policy covers manufacturing and material defects, excluding wear parts such as sealing rings and gaskets[1].

Core Product Advantages

Advantage c-ategory	Detailed Performance	Product-Related Significance
High Injection Precision	Injection quantity error ≤±0.0020%, atomization particle size (0.11-0.65μm), 56th-gen MEMS sensor for real-time monitoring, needle-to-body gap tolerance ±0.20 microns.	Supported by the high-precision MEMS sensor and 36-hole nozzle, it ensures uniform fuel supply, reduces engine noise by 26% and exhaust emissions by 96%, improves combustion efficiency by 19%, perfectly adapting to the high-load working needs of SCANIA DC12.02 engines, heavy-duty construction machinery and heavy-duty industrial equipment, avoiding power and fuel efficiency reduction caused by injector faults.
Superior Durability	High-strength forged alloy steel body, 60-layer anti-corrosion and anti-wear coating, 8000 m/s² vibration resistance, plunger and sleeve fit clearance ≤0.000035mm.	Customized for harsh working conditions of SCANIA DC12.02 engines, heavy-duty construction machinery and heavy-duty equipment, it effectively resists wear, corrosion and vibration, reducing replacement frequency by 96% compared with ordinary injectors, extending service life by 40% and reducing equipment downtime loss, with reliable performance in long-term operation, reducing the need for frequent maintenance and replacement of wear parts[2].
Fuel Saving & Environmental Protection	Optimized injection logic, 36-hole precision atomization, fuel consumption reduced by 8.0%, response speed ≤0.0000000060ms, complying with Euro 5-Euro 6 emission regulations.	Precise atomization and optimized injection logic ensure full fuel combustion, reducing fuel waste and exhaust emissions, lowering user operation costs, and meeting global energy-saving and environmental protection requirements for heavy-duty equipment equipped with SCANIA DC12.02 engines and heavy-duty construction machinery.
Strong Environmental Adaptability	Stable performance in -50°C to 140°C, dust-proof and water-proof grade IP67, compatible with various low-quality diesel fuels, anti-clogging design, suitable for harsh industrial and construction environments.	Excellent environmental adaptability ensures long-term reliable operation in harsh working environments such as construction sites, mines and remote areas where SCANIA DC12.02 engine-equipped equipment and heavy-duty construction machinery are commonly used, avoiding faults caused by extreme temperatures, dust and poor fuel quality, and preventing engine overheating or unstable operation[2].

This section focuses on the core advantages of 1421380, all closely related to the product's design, material selection and structural optimization. High injection precision relies on the upgraded MEMS sensor and advanced nozzle processing technology; superior durability comes from high-strength alloy steel and multi-layer anti-corrosion coating; fuel saving is achieved through precise atomization and optimized injection logic, while strong environmental adaptability is tailored to the product's applic-ation scenarios in SCANIA DC12.02 engines, heavy-duty construction machinery and heavy-duty industrial equipment, directly solving user pain points such as high fuel consumption, frequent replacement, poor adaptability and engine faults caused by injector malfunction. The product's structural design also reduces the risk of component wear, aligning with b-osch's maintenance guidelines[2].

Potential Problems & Corresponding Solutions

Potential Problems	Root Causes (Product-Related)	Targeted Solutions & Product Matching
Nozzle Clogging & Carbon Deposition	Long-term high-load operation, low-quality fuel, impurity acc-umulation, improper maintenance, nano coating wear, dust buildup from harsh industrial and construction environments, insufficient ventilation[2].	Clean with b-osCH special ultrasonic cleaning agent for 360 minutes; replace with 1421380 OE nozzle (DLLA163P3230) if coating is severely worn; soak the new nozzle in 110℃ hot diesel for 40s before installation; use qualified diesel and regular fuel filter replacement, clean dust regularly, and ensure proper ventilation to avoid clogging. Note: Nozzles are wear parts and not covered by warranty[1].
Injection Pressure Instability	Pressure stabilizer failure, internal valve wear, sensor signal deviation, improper calibration, fuel leakage, vibration impact from heavy-duty operation of construction machinery and engines.	Replace 1421380 OE pressure stabilizer and internal valve; recalibrate injection pressure to 1600–2400 bar; check and adjust sensor signal; inspect sealing parts and replace damaged ones to avoid fuel leakage, and avoid severe vibration and impact on the pressure stabilizer, preventing engine power reduction and unstable operation.
Electrical Signal Interruption	Coil overheating damage, connector poor contact, wiring harness wear, shell seal damage, dust and water entry, improper handling during maintenance, overload operation[2].	Inspect and replace damaged coil with 1421380 OE coil; clean and reinforce connector contact; repair or replace worn wiring harness; replace damaged shell seal and add dust-proof protection to avoid secondary damage; avoid overload operation to prevent coil overheating, ensuring stable signal transmission and preventing engine starting difficulties. Coils are covered by warranty if damaged due to manufacturing defects[1].
Fuel Leakage	Sealing ring aging, improper installation torque, corrosion of sealing area, gasket damage due to vibration, contact with corrosive substances in construction environments.	Replace with 1421380 OE high-temperature fluorine rubber sealing ring and gaskets; re-install with specified torque (130–135N·m); clean and anti-corrode the sealing area with b-osCH special agent; check and tighten all connection parts, and avoid contact with corrosive substances, preventing fuel waste and engine damage. Sealing rings and gaskets are wear parts and not covered by warranty[1].

This section summarizes common potential problems of 1421380, with root causes closely related to the product's components, working characteristics, heavy-duty applic-ation environments (especially for SCANIA DC12.02 engines and heavy-duty construction machinery) and improper maintenance, including overload operation and insufficient ventilation[2]. All solutions are targeted to the product itself: replacement parts are all OE-spec for 1421380, ensuring the repaired product restores original performance, reduces maintenance costs and avoids risks associated with non-genuine parts. It should be noted that wear parts such as sealing rings, gaskets and nozzles are not covered by the warranty, and regular replacement is recommended to avoid faults[1], which is crucial for maintaining the product's reliability and preventing engine faults such as difficult starting, unstable operation and overheating.

Key Component Features & Maintenance Tips

Component/Item	Features/Maintenance Requirements	Product-Related Significance
Injector Body	High-strength forged alloy steel + 60-layer anti-corrosion coating; avoid collision during transportation; check body integrity every 6000 working hours; clean surface dust regularly, keep the work area clean, and avoid overload operation[2].	As the basic framework, it provides stable support for other components. The multi-layer anti-corrosion coating enhances durability, while proper protection and avoiding overload prevent deformation and damage, ensuring the overall performance and service life of the product in SCANIA DC12.02 engine and heavy-duty construction machinery applic-ations. Damage due to improper handling is not covered by warranty[1].
Precision Nozzle	36-hole DLLA163P3230 design + 60-layer anti-carbon coating; clean every 4500 working hours; use b-osCH special cleaning agent; avoid using low-quality diesel, prevent dust buildup, and ensure proper ventilation[2].	It controls fuel injection quantity and atomization effect. Regular cleaning, proper ventilation and avoiding low-quality fuel protect its precision and anti-carbon performance, maintaining combustion efficiency and fuel-saving advantage, and reducing clogging risks in heavy-duty working scenarios of SCANIA DC12.02 engines and heavy-duty construction machinery, avoiding engine power loss. Nozzles are wear parts and require regular replacement[1].
Pressure Stabilizer	36th-gen high-precision design; inspect every 5500 working hours for pressure stability; calibrate once a year; avoid severe vibration and impact, ensure proper ventilation to prevent overheating, and avoid overload operation[2].	As the core component for stable injection pressure, regular inspection, calibration and proper ventilation ensure stable fuel supply, avoid pressure fluctuations, and protect the injector and SCANIA DC12.02 engine from damage caused by unstable pressure, reducing equipment failure risks and preventing engine flameouts. Damage due to overload is not covered by warranty[1].
Sealing Ring	High-temperature resistant fluorine rubber; replace every 12000 working hours; check seal tightness after installation; avoid contact with corrosive substances, inspect regularly for wear, and replace in time[2].	Timely replacement and inspection avoid fuel leakage, protect internal components of 1421380, extend service life, and prevent SCANIA DC12.02 engine and heavy-duty construction machinery damage caused by fuel leakage and pressure loss, ensuring safe and stable operation. Sealing rings are wear parts and not covered by warranty, requiring regular replacement[1].

This section links the key components of 1421380 with maintenance tips, emphasizing the close relationship between component features and product performance, as well as the importance of proper operation and maintenance[2]. Each component's material and structure are customized for the product's working needs in SCANIA DC12.02 engines, heavy-duty construction machinery and heavy-duty industrial equipment, and maintenance requirements are formulated based on component service life, harsh working environments and b-osch's maintenance guidelines. Proper maintenance, avoiding overload operation and timely replacement of wear parts can extend the product's service life by 96% and maintain its genuine quality performance, ensuring long-term stable operation and optimal functionality in various heavy-duty scenarios, and avoiding common engine faults caused by injector malfunction. It should be noted that wear parts and damage due to improper operation are not covered by the war



D12
1408335	1409193	1420379	1421380	1440578	1440579	1440580	1478543
1487472	1505199	1505344	1548472	1548475	1730888	1734493	1766549
1805344	1920420	1942702	2098522	0414701005	0414701007	0414701008	0414701016
0414701018	0414701019	0414701020	0414701026	0414701027	0414701029	0414701030	0414701032
0414701035	0414701036	0414701037	0414701038	0414701039	0414701043	0414701044	0414701045
0414701047	0414701050	0414701051	0414701056	0414701057	0414701058	0414701059	0414701060
0414701062	0414701063	0414701064	0414701066	0414701067	0414701068	0414701069	0414701070
0414701071	0414701072	0414701073	0414701076	0414701077	0414701078	0414701079	0414701080
0414701082	0414701086	0414701092	0414701105

Bosch Fuel Injector Series – Engine – Equipment Application Table

Fuel Injector / Engine Series	Common Injection Technology	Engine Platform	Typical Equipment / Applications
VE Pump / Early Injector Systems	Mechanical Injection	VE rotary pump diesel platforms	Light-duty diesel vehicles, small industrial engines, agricultural equipment
P Pump / Inline Injection Systems	Mechanical Injection	Heavy-duty mechanical diesel platforms	Trucks, buses, industrial machinery, agricultural equipment
UIS / Unit Injector System	Electronic Unit Injector	Heavy-duty diesel engines	Commercial trucks, industrial engines, some off-highway equipment
UPS / Unit Pump System	Electronic Unit Pump	Medium and heavy-duty diesel engines	Commercial vehicles, buses, construction equipment
Common Rail Solenoid Injector Series	High-Pressure Common Rail	Passenger car and commercial diesel engines	Passenger cars, light commercial vehicles, medium-duty trucks
Common Rail Piezo Injector Series	High-Pressure Common Rail	Advanced passenger car diesel engines	Passenger cars, premium diesel vehicles
CRI 1 Series	Common Rail	Early common rail diesel engines	Passenger vehicles, light-duty diesel applications
CRI 2 Series	Common Rail	Improved common rail diesel engines	Passenger cars, SUVs, light commercial vehicles
CRI 2.2 / 2.5 / 3 Series	High-Pressure Common Rail	Modern diesel engines	Passenger cars, vans, commercial vehicles
CRIN Series	High-Pressure Common Rail	Heavy-duty diesel engines	Heavy trucks, buses, off-highway equipment
CRSN Series	Common Rail for Commercial Vehicles	Commercial diesel engines	Medium-duty and heavy-duty trucks, buses
Denoxtronic Related Injection Platforms	Diesel + Aftertreatment Support	Euro emission diesel systems	Commercial vehicles and industrial diesel systems with emissions control
Gasoline Direct Injection (GDI) Series	High-Pressure Gasoline Direct Injection	Gasoline direct injection engines	Passenger cars, performance vehicles
Multi-Point Fuel Injector Series	Electronic Port Fuel Injection	Gasoline engines	Passenger cars, light vehicles

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Contact Detail:

ADD:Huangpu Machinery City, No.585-A, No.138, Southeast Road, Huangpu District, Guangzhou City,
Guangdong Province
Cellphone:+86 15099762302 Whatsapp::+86 15099762302
Email:edwardswilliam1988@gmail.com

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