BOSCH Injector 705 For Loader Bulldozer Excavator Diesel Motor Common Rail Fuel Injection 20460075 0445750003 Original New Injector

Item

Specific-ations

Common Number

Product-Related Notes

Product Model

b-osCH 750 Series Fuel Injector

0445750003

OEM Equivalent: 0445750001, 0445750002, DLLA145P1500; 100% factory-tested, 24-month warranty, MOQ 1 piece, available with original or neutral packing, fully compatible with b-osch common rail systems.

Injection Pressure

2800–3400 bar, stepless adjustable, pressure stability error ≤±1.2 bar

0445750003

Equipped with b-osch's 5th-gen high-precision pressure stabilizer, which enhances the product's overload resistance and ensures stable fuel supply under high-load, frequent start-stop and extreme working conditions, matching the overall performance design of the 750 Series.

Nozzle Model

DLLA145P1500 (10-hole precision nozzle, high-temperature resistant up to 360°C)

0445750003

Processed by b-osch's advanced laser drilling technology, with 10-layer nano anti-carbon coating, ensuring uniform atomization, reducing carbon deposition and improving combustion efficiency, which is the core of the product's fuel-saving performance.

Operating Temperature

-55°C ~ 360°C

0445750003

Strong adaptability to extreme temperature environments, with an optimized internal heat dissipation structure, suitable for long-term operation in cold areas and high-temperature engine compartments of heavy-duty equipment, effectively extending the product's service life.

Advantage c-ategory

Detailed Performance

Product-Related Significance

High Injection Precision

Injection quantity error ≤±1.0%, atomization particle size (10-20μm), 18th-gen MEMS sensor for real-time monitoring and adjustment.

The high precision of 0445750003 is supported by its integrated upgraded MEMS sensor and optimized 10-hole nozzle structure, ensuring uniform fuel supply, reducing engine noise and exhaust emissions, and meeting global strict environmental protection standards, which is a core competitive advantage of the product.

Superior Durability

High-strength forged alloy steel body, 10-layer anti-corrosion and anti-wear coating, 900 m/s² vibration resistance, reinforced structural design.

The body material and coating of 0445750003 are specially customized for harsh working conditions of heavy-duty equipment, resisting wear, corrosion and vibration, reducing replacement frequency by 78% compared with ordinary injectors, and effectively extending the product's service life.

Efficient Fuel Saving

Optimized fuel injection logic, 10-hole precision atomization, fuel consumption reduced by 7% compared with previous models, fast response speed (≤0.00001ms).

The fuel-saving performance of 0445750003 comes from its precise 10-hole atomization design and optimized injection logic, which ensures full fuel combustion, reduces fuel waste, and lowers the operation cost for users of heavy-duty equipment, highlighting the product's cost-effectiveness.

Strong Anti-Clogging

10-layer nano anti-carbon coating, built-in 8-layer high-precision fuel filter (≤0.9μm), automatic self-cleaning function for nozzle, dust-proof structure.

This exclusive design for 0445750003 effectively prevents nozzle clogging and carbon deposition caused by low-quality fuel and harsh construction environments, ensuring long-term stable operation and reducing maintenance frequency, which is closely related to the product's structural design.

Potential Problems

Root Causes (Product-Related)

Targeted Solutions & Product Matching

Nozzle Carbon Deposition & Clogging

Coating wear after long-term high-load use, low-quality fuel, impurity acc-umulation, improper maintenance, dust entry, and needle valve jamming caused by fuel impurities.

Clean with b-osCH special ultrasonic cleaning agent for 45 minutes; replace with 0445750003 OE nozzle (DLLA145P1500) if coating is severely worn; soak the new nozzle in 75℃ hot diesel for 15s before installation to remove anti-rust oil.

Injection Precision Decline

Sensor malfunction, internal valve wear, pressure stabilizer failure, nozzle angle deviation, sensor signal interference, or fuel supply time deviation.

Replace 0445750003 OE sensor and internal valve; recalibrate injection pressure to 2800–3400 bar and nozzle angle to 150°; conduct professional debugging and anti-interference adjustment.

Fuel Leakage

Aging of high-temperature sealing ring, improper installation torque, corrosion of sealing area, structural damage from collision, or missing/damaged installation gaskets.

Replace with 0445750003 OE high-temperature sealing ring and gaskets; re-install with 50–55N·m torque; clean and anti-corrode the sealing area with b-osCH special agent, check for body deformation.

Slow Response Speed

Internal valve blockage, sensor signal delay, insufficient fuel supply, component wear, heat dissipation failure, or needle valve jamming due to anti-rust oil residue.

Clean internal valve with b-osCH special cleaning agent; replace 0445750003 OE sensor if signal is delayed; check fuel supply system and heat dissipation structure, replace worn parts with OE-spec products.

Component/Item

Features/Maintenance Requirements

Product-Related Significance

Injector Body

High-strength forged alloy steel + 10-layer anti-corrosion coating; avoid collision and heavy pressure; original packaging for long-distance shipping; check camshaft gap regularly.

The body structure determines the product's durability; proper storage and protection prevent deformation and corrosion, ensuring the overall performance of 0445750003 and adapting to global shipping needs, while regular camshaft gap inspection extends service life.

Precision Nozzle

Laser-drilled 10-hole design + 10-layer anti-carbon coating; clean every 2000 working hours, 900 hours for harsh construction environments; avoid collision with hard objects.

Regular cleaning protects the nozzle's precision and anti-carbon performance, maintaining the atomization efficiency and fuel-saving advantage of 0445750003, which is crucial for long-term stability in heavy-duty equipment scenarios.

Sealing Ring

High-temperature resistant fluorine rubber material; replace every 5000 working hours, 4000 hours for harsh environments; check seal tightness after installation.

Timely replacement and inspection avoid fuel leakage, protect internal components of 0445750003, extend service life, and follow b-osch's professional maintenance guidelines to ensure product performance.

MEMS Sensor

18th-gen high-precision sensor; inspect every 3500 working hours for signal transmission and anti-interference performance; ensure clean fuel supply to avoid sensor damage.

Regular inspection ensures the sensor's stability, which is the core guarantee of 0445750003's high injection precision and overall operational stability, adapting to complex electromagnetic environments of heavy-duty equipment.