Common rail diesel injector · Bosch CRIN 3
Bosch 0445120050 diesel injector
Bosch 0445120050 (also written 0 445 120 050) is a common rail diesel injector for Cummins engines. We supply it reconditioned, with 12 months warranty.
- 12 months warranty on every injector
- Reconditioned units tested on our own bench, report included
- Free next-day UK delivery on stock items
- 14-day returns on unused, unfitted injectors
Bosch 0445120050 part numbers and OE references
The same injector is sold under several numbers. If any number below is on your injector or your quote, this is the part. Numbers are shown without spaces and, in brackets, as printed by the manufacturer.
| Type | Brand | Number |
|---|---|---|
| Manufacturer part number | Bosch | 0445120050 (0 445 120 050) |
| OE number | Cummins | 3970985 (3 970 985), 3999832 (3 999 832) |
Interchangeable injectors
Same injector type, confirmed as replacements for each other:
Not interchangeable
These are used on the same vehicles but are a different injector generation. They do not replace Bosch 0445120050:
Bosch 0445120050: what you get
Price, warranty and how exchange works.
| Condition | Part number | Price inc. VAT | Refundable surcharge | Warranty | Availability |
|---|---|---|---|---|---|
| ReconditionedReconditioned in our workshop, tested on our own bench, test report included | 0445120050 | On request | £50 per injector | 12 months | Ask us |
Prices and stock last checked .
Questions about Bosch 0445120050
Is 0 445 120 050 the same injector as 0445120050?
Yes. Bosch prints the number with spaces (0 445 120 050); 0445120050 is the same number written without them. Vehicle manufacturers use their own numbers for this injector: Cummins 3970985 (3 970 985), 3999832 (3 999 832).
How does the exchange surcharge work?
Reconditioned injectors are sold on exchange. A refundable surcharge of £50 per injector is added to your order and refunded when we receive your old injector. New genuine injectors have no surcharge.
Which injectors can replace Bosch 0445120050?
Confirmed as interchangeable with Bosch 0445120050: Bosch 0445120185. Not interchangeable, although used on the same vehicles: 0445120009, 0445120085 and 0445120093.
Does this injector need coding after fitting?
Most common rail injectors carry a correction code printed on the injector body (Bosch IMA, Delphi C2i/C3i, Siemens VDO IIC). If your engine management uses injector coding, the code of each fitted injector has to be entered with a diagnostic tool.
How much is delivery and how long does it take?
Delivery is free. Injectors in stock are delivered the next working day in the UK. Injectors we do not hold in stock are delivered in 1-3 working days.
Can I return an injector?
Yes. You can cancel within 14 days of delivery and return the injector unused and unfitted for a refund; you pay the return postage. If an injector is faulty, it is covered by the 12 months warranty.
What warranty do I get?
12 months on every injector we sell.