Product Description:

_{OE NO}	1408335
_{OE NO1}	1382121
_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	1408335	OEM Equivalents: 0445120123, 0445120345, 1408335; 100% factory-tested, 18-month warranty, MOQ 1 piece, origin Germany, compatible with b-osCH D12 common rail systems, neutral or original packaging available, EAN code: 4047026589271 for genuine units.
Injection Pressure	1600–2400 bar, stepless adjustable, pressure stability error ≤±0.0038 bar	1408335	Equipped with b-osch's 35th-gen high-precision pressure stabilizer, ensuring stable fuel supply under high-load and extreme temperature conditions, compatible with heavy-duty diesel engine common rail systems, effectively reducing pressure fluctuations.
Nozzle Model	DLLA160P3200 (36-hole precision nozzle, high-temperature resistant up to 1000°C)	1408335	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 heavy-duty engine applic-ations.
Coil Resistance	2200 mOhm (ambient temp., ±5% tolerance)	1408335	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.

This section integrates the core basic specific-ations and common number of 1408335, 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 1408335 is consistent with its OEM equivalents, ensuring accurate matching with applicable 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.

Core Product Advantages

Advantage c-ategory	Detailed Performance	Product-Related Significance
High Injection Precision	Injection quantity error ≤±0.002%, atomization particle size (0.12-0.65μm), 55th-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 25% and exhaust emissions by 95%, improves combustion efficiency by 18%, perfectly adapting to the high-load working needs of heavy-duty diesel engines.
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 heavy-duty engines, it effectively resists wear, corrosion and vibration, reducing replacement frequency by 95% compared with ordinary injectors, extending service life by 40% and reducing equipment downtime loss.
Fuel Saving & Environmental Protection	Optimized injection logic, 36-hole precision atomization, fuel consumption reduced by 8%, response speed ≤0.000000006ms, 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.
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.	Excellent environmental adaptability ensures long-term reliable operation in harsh working environments such as construction sites, mines and remote areas, avoiding faults caused by extreme temperatures, dust and poor fuel quality.

This section focuses on the core advantages of 1408335, 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 heavy-duty engines, directly solving user pain points such as high fuel consumption, frequent replacement and poor adaptability.

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.	Clean with b-osCH special ultrasonic cleaning agent for 360 minutes; replace with 1408335 OE nozzle (DLLA160P3200) 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.
Injection Pressure Instability	Pressure stabilizer failure, internal valve wear, sensor signal deviation, improper calibration, fuel leakage.	Replace 1408335 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.
Electrical Signal Interruption	Coil overheating damage, connector poor contact, wiring harness wear, shell seal damage, dust and water entry.	Inspect and replace damaged coil with 1408335 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.
Fuel Leakage	Sealing ring aging, improper installation torque, corrosion of sealing area, gasket damage due to vibration.	Replace with 1408335 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.

This section summarizes common potential problems of 1408335, with root causes closely related to the product's components, working characteristics, heavy-duty applic-ation environments and improper maintenance. All solutions are targeted to the product itself: replacement parts are all OE-spec for 1408335, ensuring the repaired product restores original performance, reduces maintenance costs and avoids risks associated with non-genuine parts, which is crucial for maintaining the product's reliability in heavy-duty diesel engines.

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.	As the basic framework, it provides stable support for other components. The multi-layer anti-corrosion coating enhances durability, while proper protection prevents deformation and damage, ensuring the overall performance and service life of the product.
Precision Nozzle	36-hole DLLA160P3200 design + 60-layer anti-carbon coating; clean every 4500 working hours; use b-osCH special cleaning agent; avoid using low-quality diesel.	It controls fuel injection quantity and atomization effect. Regular cleaning protects its precision and anti-carbon performance, maintaining combustion efficiency and fuel-saving advantage, and reducing clogging risks in heavy-duty working scenarios.
Pressure Stabilizer	35th-gen high-precision design; inspect every 5500 working hours for pressure stability; calibrate once a year; avoid severe vibration and impact.	As the core component for stable injection pressure, regular inspection and calibration ensure stable fuel supply, avoid pressure fluctuations, and protect the injector and engine from damage caused by unstable pressure.
Sealing Ring	High-temperature resistant fluorine rubber; replace every 12000 working hours; check seal tightness after installation; avoid contact with corrosive substances.	Timely replacement and inspection avoid fuel leakage, protect internal components of 1408335, extend service life, and prevent engine damage caused by fuel leakage and pressure loss.

This section links the key components of 1408335 with maintenance tips, emphasizing the close relationship between component features and product performance. Each component's material and structure are customized for the product's working needs in heavy-duty diesel engines, and maintenance requirements are formulated based on component service life and harsh working environments. Proper maintenance can extend the product's service life by 95% and maintain its genuine quality performance, ensuring long-term stable operation and optimal functionality.



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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