0445120370 CRIN3 Injector for Dongfeng DDi75 Replacement
New 0445120370 common rail injector (Bosch CRIN3-18) for Dongfeng Longqing DDi75 / DDi75 X7 diesel engines. A Vidishi Auto compatible replacement, 12-month warranty. Single package 12x12x2 cm / 2.0 kg gross. MOQ 4 pcs. Wholesale export supply.
Original price was: $130.00.$55.00Current price is: $55.00.
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Product Specifications
| Weight | 2.0 kg |
|---|---|
| Dimensions | 12 × 12 × 2 cm |
| make | |
| model | |
| engine | |
| position |
Product Details
0445120370 Common Rail Injector by the Numbers
Verified identity and fitment data for the complete diesel common rail injector, supplied for the Dongfeng Longqing DDi75 platform.
Every unit in this reference is a complete CRIN3-18 injector built for the high pressure common rail system rather than a bare spray tip, carrying the Bosch CRIN3-18 family code on the body and serving the Dongfeng Longqing DDi75 platform. Buyers reach the page by several routes: some search a Dongfeng common rail injector for a Tianlong or Tianjin tractor unit, some arrive from a heavy duty diesel injector parts list for the Longqing DDi family, and some quote the Dongfeng 1112010-E4200 number because that is what sits on their own parts drawing. Most workshops simply ask for a common rail injector that matches the etched code on the old unit. The Bosch CRIN3-18 reference is printed on the body for matching only.
Vehicle Compatibility for 0445120370
A common rail injector for Dongfeng commercial vehicles: this complete unit runs the Longqing DDi75 engine in Dongfeng tractor units, rigid trucks and the same engine in fleet and rebuild duty.
| Engine | Layout | Typical machine | Injector |
|---|---|---|---|
| Dongfeng DDi75 injector | Inline-six, common rail, 7.5 L | Dongfeng Tianlong and Tianlong flagship tractor units | 0445120370 |
| Dongfeng DDi75 diesel injector | Inline-six, four valves per cylinder | Dongfeng Tianjin rigid trucks on the Longqing DDi platform | 0445120370 |
| Dongfeng Longqing DDi75 X7 injector | DDi75 X7 build family, 7.5 L | Late-build Longqing DDi trucks and tractor units | 0445120370 |
| DDi75 engine injector | Longqing DDi platform under load | On-highway haulage and long-haul fleet service | 0445120370 |
| Dongfeng truck injector | Heavy-duty commercial vehicle duty | Workshop replacement and fleet rebuild programmes | 0445120370 |
Commercial vehicleTruck and haulage duty
Common rail injectorAll CR injectors
Heavy-duty rangeTruck and plant duty
Diesel common railCRIN platform
Solenoid injectorElectromagnetic units
Fault codesDiagnosis index
Installation guidesFitting walk-through
Most buyers arrive with a Dongfeng DDi75 diesel injector number alone, so the whole family sits on one page. Send the nameplate and we confirm the Dongfeng DDi75 injector fitment before you order; the same reference also serves as a Dongfeng truck injector guide on the CRIN3-18 platform. Interchange numbers seen across sources: 0 445 120 370 and the Dongfeng 1112010-E4200 host number.
Fitment verification
- VIN or chassis number — we decode the build record to confirm the truck and engine family.
- Engine code plate — the plate on the block must read DDi75 or DDi75 X7, not another Longqing family.
- Photo of the old unit — the number stamped on the injector body, so we match the code and not just the engine.
About the 0445120370 Injector
What the complete CRIN3-18 unit is, and how it sits in the Dongfeng DDi75 fuel system.
What is a common rail injector?
A common rail injector is the solenoid unit that meters and atomises fuel from the rail into the combustion bowl. The 0445120370 is a complete common rail injector unit in the Bosch CRIN3-18 family: the whole injector, not just the spray tip.
How does a common rail injector work?
The rail holds fuel at high pressure and the ECU fires the solenoid, so the needle lifts for a controlled window. On a Dongfeng DDi75 truck the control valve opens, the nozzle sprays, and the ECU trims each cylinder individually. A worn unit shows a weak cone or a seeping seat long before it stops running.
Common rail injector vs nozzle
Putting the complete injector alongside its nozzle comes down to whole unit against component. The injector is the complete assembly; the nozzle is one serviceable part inside it. A CRIN3 vs CRI injector comparison is a different question again: the CRIN3-18 is a heavy-duty unit built for commercial-vehicle duty, while a light-duty CRI part is a smaller passenger-car injector with a different calibration. The high pressure common rail standard keeps the family pressure class consistent across builds.
Internally the unit carries its CRIN3-18 solenoid control valve already fitted, and its spray nozzle DLLA154P2419. It is built to the Bosch CRIN3-18 specification, carries a 12-month warranty, and is supplied new under the Vidishi Auto brand as a compatible replacement.
Technical Specifications
Verified parameters for this CRIN3-18 high pressure injector, graded at the common rail platform level. Items the manufacturer does not publish are flagged, not guessed.
- Confirmed — multi-source verified fact
- Reference — interchange or class-level value; cross-check before relying on it
- Not published — the manufacturer does not publish it, and we never invent a number to fill the gap
| Parameter | Value | Data tier |
|---|---|---|
| Part number | 0445120370 (Bosch 0 445 120 370) | Confirmed |
| Dongfeng reference | 1112010-E4200 | Confirmed |
| Injector family | Bosch CRIN3-18 | Confirmed |
| Injector series | Bosch 120 Series, the 120 series injector platform | Confirmed |
| Supplied brand | Vidishi Auto — new compatible replacement, not Bosch-branded | Confirmed |
| Injection system | Common Rail (CR) | Confirmed |
| Injector type | Electromagnetic (solenoid) | Confirmed |
| Bosch CRIN3-18 specification | CRIN3-18 high pressure class | Reference |
| Spray nozzle reference | DLLA154P2419 (Bosch 0 433 172 419), component reference only | Reference |
| Control valve reference | F00RJ03556, component reference only | Reference |
| Application engine | Dongfeng Longqing DDi75 and DDi75 X7, 7.5 L | Confirmed |
| Dongfeng common rail diesel | Heavy-duty commercial vehicle platform | Confirmed |
| Condition | New | Confirmed |
| 12-month warranty | Cover against manufacturing defects | Confirmed |
| new compatible replacement | Vidishi Auto branded, reference interchanges only | Confirmed |
| Single package size | 12 × 12 × 2 cm | Confirmed |
| Packaged shipping weight | 2.0 kg per unit — packaging and transport weight | Confirmed |
| Net weight (single injector) | Not published by the manufacturer | Not published |
| Max injection pressure value | Not published by the manufacturer | Not published |
| Flow rate (cc/min) | Not published by the manufacturer | Not published |
| Coil resistance (ohm) | Not published by the manufacturer | Not published |
| Per-unit opening pressure | Not published by the manufacturer | Not published |
| Emission class | Not published against this part number | Not published |
Reference figures come from the Dongfeng 1112010-E4200 host-number reverse lookup and Bosch CRIN3-18 component evidence; the 0 445 120 370 number is carried on the body as an interchange, never as an origin claim. This is a CRIN3-18 high pressure injector built to the Bosch CRIN3-18 specification. Net weight is left as not published because no source ties a figure to this part number, so only the packaged shipping weight of 2.0 kg is stated. Pressure is a class rating, not a per-unit calibration value, and flow rate, coil resistance and opening pressure are quoted only after a bench test. The nozzle reference DLLA154P2419 and the control valve reference F00RJ03556 are each published by independent component catalogues; neither component is sold separately on this page.
Cross-Reference & Interchanges
Need a 0445120370 cross reference or a 0445120370 equivalent? The numbers below are the ones buyers match against. All are reference interchanges only.
The CRIN3-18 control valve and its solenoid are family-level service items inside the unit. The valve reference tables that vendors publish list 0445120370 among the injectors this component serves, so the valve number F00RJ03556 is stated here as a component reference — the valve itself is still not sold separately on this page. The nozzle, by contrast, has the published number DLLA154P2419, Bosch nozzle number 0 433 172 419, and that one we state for the same reason. Send the unit photo and we confirm both against the injector revision with your order.
Key Features
Why the 0445120370 CRIN3-18 unit is built for heavy-duty commercial-vehicle service.
CRIN3-18 high pressure injector
Rated to the CRIN3-18 common rail high-pressure standard for precise metering under load.
Complete unit, not a tip
What you receive is the entire CRIN3-18 assembly: a common rail injector complete unit, not an internal component of one.
Longqing DDi platform matched
Built for the Dongfeng DDi75 and DDi75 X7 7.5 L commercial-vehicle engine.
Published component references
The spray nozzle DLLA154P2419 and the control valve F00RJ03556 are both named, so the internals can be identified against a catalogue.
New and warranted
Supplied new with a 12-month warranty against manufacturing defects.
Compatible brand
Vidishi Auto compatible replacement — reference interchanges only, not genuine Bosch.
Ready for export
Foam-lined export packing with HS code documentation on every consignment.
Failure Symptoms
Common rail injector symptoms to watch for on a Dongfeng DDi75 truck, and the injector checks that separate a tired unit from a healthy one.
| Symptom | What it usually means |
|---|---|
| injector rough idle misfire | A weak or seeping unit drops combustion quality on one cylinder at idle and under load. |
| diesel injector black smoke | Poor atomisation from a worn spray pattern raises soot and exhaust opacity under load. |
| hard start injector | Low cranking compression on one cylinder or a leaking valve seat delays start-up. |
| high return flow injector | An internal leak raises return-line volume and starves the rail of pressure. |
| injector fault code | An ECU cylinder-balance or injector-circuit code points to one unit for a bench test. |
| common rail injector seat leak | A seeping needle seat loses rail pressure between injections and can coke the tip. |
| injector spray pattern weak | A worn cone shows an uneven, narrow spray rather than a clean fan on the tester. |
| injector return flow test | A return-flow measurement against the CRIN3-18 spec separates a tired unit from a healthy one. |
Two measurements do most of the work: a return-flow reading against the Bosch CRIN3-18 spec, and a bench spray and seat-leak check. Recognising these common rail injector symptoms early prevents a roadside or depot failure. The root cause is rarely the injector alone — contamination past the filter, a high-pressure pump shedding debris and worn valve seats from long service all repeat the same damage, so fix the cause as well as the unit.
How to replace common rail injector on a Dongfeng DDi75
A bench-side walk-through of common rail injector installation for the 0445120370, from a single injector replacement Dongfeng workshops can do in the yard to a full bench test.
Confirm the code
Match the etched 0445120370 and the engine code plate DDi75 before removal.
Relieve pressure
Depressurise the common rail and isolate the battery before opening the fuel lines. The full common rail injector installation sequence for a truck engine starts here.
Remove and inspect
Unbolt the old unit, fit a fresh injector copper seal washer, and check the bore and seat for scoring or debris.
Fit to the clamp torque
Seat the new 0445120370 to the common rail injector torque spec with a clean seal; never reuse a washer or over-torque the clamp.
Purge and code
Bleed air from the fuel line and write the injector coding value if the ECU generation requires it.
Bench-test
Run a bench test common rail injector check on spray pattern, seat leak and return flow before refitting. This is also how to test a common rail injector on the bench before it goes back into service.
Fit a fresh copper washer every time, torque to spec, and purge the line before the first start. The copper seal washer and the coding value are the two steps workshops most often skip. A single injector replacement Dongfeng procedure reuses the same steps as a full set — change the worn unit, not all six.
Warranty & Support
Every 0445120370 unit is covered against manufacturing defects, handled against the batch number on the box.
Manufacturing defects are covered from the ship date, and we handle an injector 12 month warranty against the batch number recorded on the box.
Contaminated fuel, water in the system, incorrect fitting, or a root fault elsewhere in the fuel system.
To open an injector warranty claim, send the batch number and the bench report; the full procedure sits on the Warranty Policy page.
Each unit is logged by batch so a claim is quick to verify and replace.
Wholesale & Bulk Supply
As a common rail injector supplier we ship to importers, workshops, truck fleets and injector rebuilders worldwide. Send a common rail injector RFQ with your quantity and destination port, and we return a wholesale common rail injector quote, from a single unit to a common rail injector bulk order.
A floor of 4 pcs lets a workshop or fleet test the part first, and volume tiers are quoted on the same RFQ.
Send the quantity and destination port and we return price, MOQ and lead time in one message, within 24 hours.
A bulk consignment ships with consolidated packing and a single tracking reference.
Export documentation, packing list and HS code are provided with every consignment.
Supplied as a wholesale common rail injector line for importers and distributors.
A common rail injector supplier serving the overseas replacement market.
Shipping & Packing
Export packing and freight for single boxes through container volumes, quoted per order.
Express courier or air for single boxes and small batches, sea freight for container volumes, all with tracking.
Each unit ships in a 12 × 12 × 2 cm export box at 2.0 kg gross, foam-lined to protect the nozzle tip.
Commercial invoice, packing list, HS code documentation and a tracking reference travel with every consignment.
Buyer Feedback
Field notes from workshops and fleets running the 0445120370 on Dongfeng DDi75 trucks.
Matched the old 1112010-E4200 on our Tianlong tractors; smooth idle and clean combustion after a bench test. Compatible part, not an original Bosch unit — exactly what we needed for the price.
One unit replaced a tired injector on a DDi75 rigid truck; rail pressure restored and smoke dropped. Fast RFQ turnaround and the box arrived intact.
Frequently Asked
Common questions about the 0445120370 common rail injector and ordering a compatible replacement.
What is the 0445120370 common rail injector?
Is 0445120370 the same as Bosch 0 445 120 370?
Which engines does the 0445120370 injector fit?
Can you run a 0445120370 fitment check before I order?
What is the 0445120370 injection pressure?
Does the 0445120370 control valve come with the unit?
What is the 0445120370 nozzle number?
What about 0445120370 coding after fitment?
What are the 0445120370 warranty terms?
What is the 0445120370 minimum order quantity?
Is 0445120370 genuine Bosch?
How long is the lead time, and how is the order shipped?
Need Help Matching?
Send the engine nameplate and the old injector photo; we confirm the 0445120370 match before you pay.
Instant fitment check — wa.me/8613509025030
Formal quote — [email protected]
Warranty Policy — cover, claims and exclusions for the 0445120370.
Shipping Information — packing, freight modes and return rules.
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