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Bosch Common Rail Injector CRIN4

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OEM          Available
Sample      Available
Payment    PayPal, Western Union, T/T
Place of Origin  China
The MOQ     50pcs

1. Product Information

Bosch CRIN4 is a family of Bosch common‑rail diesel fuel injectors (CRIN = Common Rail INjector, generation 4). They are high‑pressure, electronically controlled injectors used on modern diesel engines to deliver precisely metered fuel from the common rail into each cylinder.

Quick facts
– Operation: electrically actuated (usually solenoid; some families use piezo), timed by the ECU to allow multiple injection events (pilot/main/post) for cleaner combustion and lower noise.
– Purpose: provide very high‑pressure, precisely metered fuel spray for better power, efficiency, emissions control, and smoother running.
– Typical features: precision nozzle/needle, internal pressure/control chamber, return/bleed path, and electrical connector for ECU control. Calibrated flow characteristics and seat sealing are critical.
– Applications: light‑ and heavy‑duty diesel passenger cars, vans, and commercial engines using common‑rail fuel systems (various engine makers use CRIN4 variants).
– Symptoms of failure: rough idle, misfire, poor acceleration, increased smoke (black/white/blue), poor fuel economy, hard starting, injector/leak codes, or imbalance codes in diagnostics.
– Service/repair: injectors may be replaced or remanufactured; replacement often requires matching/calibration (flow testing) and sometimes injector coding/programming to the ECU.
– Identification: a full Bosch part number (and vehicle/engine VIN or OEM code) is needed to pick the correct CRIN4 variant and nozzle type.

 

2. Product Model List

No.ModelOE No.ApplicationTypeEngine
10445120104
0445120207
0956435539
0986435540
4720700787
4720700887
4720700387
4720700587
4720700087
MERCEDES-BENZCRIN4-21Detroit DD15/16
20445120194
0445120195
0986435537
0986435642
4710700387
4710700187
4710700287
MERCEDES-BENZ SETRACRIN4-21
30445120270
0445120271
0986435598
4710700487
47107004870080
MERCEDES-BENZCRIN4-21
40445120085
0445120286
CRIN4-21
50445120287
0445120288
0986435624
4710700587
471070058780
MERCEDES-BENZCRIN4-21
60445120298
0445120299
0986435622
4700700087
470070008780
MERCEDES-BENZCRIN4-21
70445120300
0445120301
4730700287
A4730700287
MERCEDES-BENZCRIN4-21
80445120302
0445120303
0986435646
0986435649
4720701087
4720701287
MERCEDES-BENZCRIN4-21
CRIN4-27
90445120385
0445120386
0986435647
4710700887MERCEDES-BENZCRIN4-27
100445120374
0445120375
4700700287
A4700700287
MERCEDES-BENZCRIN4-21
110445120642A4710701787MERCEDES-BENZCRIN4-21

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