5283275 Fuel injector Bosch Cummins ISF3.8

1. Basic Product Information

• Bosch Part Number: 0 445 120 134
• Cummins OE Reference: 5283275, 4947582
• Product Series: Bosch CRIN2-16 Light Commercial Common Rail Injector
• Compatible Engine: Foton Cummins ISF3.8 Euro 3 / Euro 4 Diesel Engine
• Matching Vehicles: Foton Aumark, Omak light trucks, refrigerated trucks, light engineering vehicles
• Weight: Net weight (bare injector): 0.86 kg / 860 g Single packed gross weight: 1.0 kg Total gross weight with buffer packing: approx. 1.2 kg

2. Technical SpecificationsPressure System

• Rated common rail pressure: 1600 bar, peak working pressure up to 1800 bar
• Stable backflow pressure drop ≤ 1.9 bar, consistent fuel supply flow
• Precisely calibrated nozzle opening pressure

Electrical Parameters

• Working voltage: 12V DC vehicle power supply
• Peak solenoid drive current: 1.5 A
• Armature lift: 52 μm (tolerance ±5 μm)
• Ultra-fast opening & closing response time ≤ 0.5 ms
• Supports ECU multi-injection strategy: Pre-injection + Main injection + Post-injection

Nozzle & Flow Data

• Matching nozzle model: DSLA144P971 multi-hole atomizing nozzle
• Number of spray holes: 6 micro holes
• Standard rated flow rate: 210 L/h under 1600 bar test condition
• Optimized spray angle matching ISF3.8 combustion chamber, no cylinder wall wetting
• Ultra-precise needle valve fit clearance: 0.2 μm for reliable high-pressure sealing

Physical Material & Dimension

• Main housing: High-strength quenched alloy steel, anti-high pressure & thermal deformation
• Sealing rings: High-temperature resistant fluorine rubber, working temperature range: -40℃ ~ 180℃
• Solenoid assembly: High-performance magnetic core & fatigue-resistant spring; standard spring preload 72 N
• Overall length: ~215 mm; Max outer diameter: 32 mm; Standard plug-and-play mounting structure

3. Product Features

Multi-stage Injection Technology Pre-injection reduces cylinder explosion impact to lower engine noise and idle vibration; main injection delivers sufficient power output; post-injection supports DPF regeneration to meet Euro IV emission standards.

Micron-level Precision Machining Plunger, needle valve and valve assembly are ground under German industrial standards with 0.2μm minimal clearance. Stable sealing prevents fuel dripping and black smoke during long-term high-pressure operation.

Wide Temperature Adaptability Stable atomization at -40℃ cold start; no thermal deformation under continuous heavy load up to 180℃, suitable for mountain, cold chain and construction site working conditions.

Integrated All-in-one Structure Solenoid, valve assembly, nozzle and return fuel channel are integrated as one unit. Direct replacement without extra modification or debugging.

100% Full Inspection Before Delivery Every unit passes strict tests including high-pressure leakage, flow uniformity, response speed, high-low temperature durability and insulation voltage. Each injector is printed with flow correction code for accurate ECU fuel matching.

Wear-resistant Long Service Life Needle valve assembly adopts carburizing quenching treatment to resist wear from tiny diesel impurities. Spring cycle fatigue life exceeds 1 million times; service life reaches 600,000–1,000,000 km under regular maintenance.

4. Core AdvantagesFuel Economy & Power Performance

• Fine atomization improves combustion efficiency, cutting fuel consumption by 5%–8% under identical driving conditions
• Improved low-speed torque for stronger climbing and acceleration without power lag
• Reliable one-time cold start even at extremely low temperatures, no stalling at idle

Emission & Maintenance Benefits

• Complete combustion reduces black/blue exhaust smoke and PM particles, preventing frequent DPF blockage
• Less carbon deposit on cylinders, pistons and valves, extending engine overhaul intervals
• Consistent fuel delivery across all cylinders to eliminate rough idle and misfire issues

Easy Replacement & Wide Compatibility

• 1:1 OEM identical shape, mounting thread and wiring connector for plug-and-play installation
• Flow correction code fully matches original 5283275 parameters; no ECU reprogramming required after replacement
• Universal compatibility with original Bosch and aftermarket replacement units, ideal for fleet bulk maintenance

Durability & Cost-saving

• Higher tolerance to poor-quality diesel compared with generic aftermarket injectors; needle valve rarely stuck by impurities
• Low failure rate with average trouble-free mileage over 700,000 km, reducing unexpected roadside repair costs
• Standardized spare part with stable global supply chain for easy procurement and replacement

5. Application & Solvable Common FaultsApplicable ScenariosUrban delivery light trucks, long-distance freight vehicles, refrigerated trucks, light dumpers, municipal sanitation vehicles with ISF3.8 engines.Troubleshooting Functions

Hard cold start, rough idle, weak acceleration

Excessive black smoke and abnormal high fuel consumption

Frequent DPF clogging and emission fault codes

Engine misfire, unstable RPM and abnormal knocking noise

Injector fuel leakage, cylinder wall wetting and piston ablation

6. Installation & Operation Notes

Thoroughly clean common rail pipelines and replace fuel filter before installation to avoid needle valve scratch from impurities

Apply thin layer of high-temperature grease on O-rings; fasten with specified torque to avoid housing cracking

Run engine idle for 5–10 minutes after replacement to bleed air; check all high-pressure and return fuel joints for leakage

Replace fuel filter regularly during daily use; avoid diesel with excessive water and impurities to prolong injector service life