0445120398 Common Rail Injector Replacement for Ashok Leyland FKS00900
New 0445120398 common rail injector (Bosch 0 445 120 398 reference, Ashok Leyland OE FKS00900, Bosch model CRIN2-16-BL) for Ashok Leyland trucks and buses running Bosch common-rail diesel. A Vidishi Auto compatible replacement, 1600 bar CRIN2-16 class, solenoid drive, 12-month warranty. Single package 27 x 12 x 13.5 cm, 1.0 kg gross. MOQ 4 pcs. Wholesale export supply.
Original price was: $120.00.$65.00Current price is: $65.00.
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Product Specifications
| Weight | 1.0 kg |
|---|---|
| Dimensions | 27 × 12 × 13.5 cm |
| make | |
| model | |
| engine | |
| position |
Product Details
0445120398 Common Rail Injector by the Numbers
Verified identity and fitment data for the complete diesel common rail injector, supplied for the Ashok Leyland truck and bus range.
Each 0445120398 is a common rail injector and a solenoid injector in the CRIN2 family; the diesel common rail injector class serves Ashok Leyland trucks and buses. The bosch common rail injector reference 0 445 120 398 is shown for interchange only. This 0445120398 diesel injector carries the Bosch 0 445 120 398 reference on the body, so a bosch 0445120398 injector search resolves to the same Ashok Leyland fitment, and the 0445120398 fuel injector listing covers the whole truck and bus family. A 0445120398 injector order is matched on the etched code first, never on the model name alone.
Vehicle Compatibility for 0445120398
This complete injector runs the Bosch common-rail diesel engines in Ashok Leyland trucks and buses. Match the engine nameplate and the number on the old injector before ordering.
| Vehicle | Application | Fuel system | Injector |
|---|---|---|---|
| Ashok Leyland | Heavy-duty truck, long haulage | Bosch common rail | 0445120398 |
| Ashok Leyland | Tractor and trailer unit | Bosch common rail | 0445120398 |
| Ashok Leyland | City bus | Bosch common rail | 0445120398 |
| Ashok Leyland | Intercity coach | Bosch common rail | 0445120398 |
| Ashok Leyland | Tipper and construction | Bosch common rail | 0445120398 |
Common rail injectorTruck and bus diesel
Heavy duty diesel injectorFull CRIN2 category
Ashok Leyland applicationsTrucks, buses, fleets
Most buyers arrive with an etched code alone, and the ashok leyland injector fitted to a truck and the one fitted to a bus are the same CRIN2 assembly: an ashok leyland truck injector and an ashok leyland bus injector cross to the same fks00900 injector reference. Quote the fks00900 number stamped on the old body and we confirm the match. The heavy duty truck injector buyer running a six-cylinder Ashok Leyland diesel, and anyone pricing a 6 cylinder diesel injector replacement, lands on the same unit. Engine codes for this family are not published by the manufacturer, so the OE number is the match key, not the model name.
Fitment verification
- VIN or chassis number — we decode the build record to confirm the engine family.
- Engine code plate — the plate on the block must read a Bosch common-rail Ashok Leyland unit, not another 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 0445120398 Injector
What the complete CRIN2 unit is, and how it sits in the Ashok Leyland fuel system.
What is a common rail injector?
This is the solenoid unit that meters and atomises fuel from the rail into the combustion bowl. The 0445120398 is a complete unit in the Bosch CRIN2 family: the whole injector, not just a spray tip.
How does a common rail injector work?
The rail holds fuel at pressure and the ECU fires the solenoid, so the needle lifts for a controlled window. On an Ashok Leyland truck or bus engine the valve opens, the spray forms, and the ECU trims each cylinder individually. A worn 0445120398 diesel injector shows up as a weak cone or a seeping seat long before it stops running.
Complete unit versus parts
The injector is the complete assembly; diesel injector parts and fuel injector parts such as the valve and seat sit inside it. The common rail injection system meters fuel through a diesel fuel injector on each cylinder, and a bosch diesel injector reference (0 445 120 398) is a CRIN2 unit — the whole assembly, not bare common rail injector parts. A common rail diesel injector of this generation leaves the factory as one sealed unit, and we supply it that way.


Technical Specifications
Verified parameters for this CRIN2 common rail injector, graded at the Ashok Leyland truck and bus 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 | 0445120398 (Bosch 0 445 120 398) | Confirmed |
| Ashok Leyland OE number | FKS00900 | Reference |
| Bosch reference number | 0 445 120 398 | Reference |
| Injector family | Bosch CRIN2 (solenoid), model CRIN2-16-BL | Confirmed |
| Drive type | Solenoid | Confirmed |
| Supplied brand | Vidishi Auto — new compatible replacement, not Bosch-branded | Confirmed |
| Injection system | Common Rail (CR) | Confirmed |
| Max injection pressure | 1600 bar (CRIN2-16 class rating) | Reference |
| Application engine | Ashok Leyland truck / bus diesel, Bosch common rail | Confirmed |
| Emission | Not published (build-dependent) | Not published |
| Condition | New | Confirmed |
| Warranty | 12 months against manufacturing defects | Confirmed |
| Single package size | 27 × 12 × 13.5 cm | Confirmed |
| Packaged shipping weight | 1.0 kg per unit — packaging and transport weight | Confirmed |
| Net weight (single injector) | Not published by the manufacturer | Not published |
| Flow rate (cc/min or mg/stroke) | 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 |
| Injector correction code | Not published by the manufacturer | Not published |
As a bosch injector built to the Bosch 0 445 120 398 specification, this 0445120398 fuel injector is a complete common rail unit. The common rail injector specifications list the CRIN2 family, the CRIN2-16 class rating of 1600 bar, solenoid drive and the 12-month warranty. We bench-check injector flow rate and injector spray pattern on every batch; the Ashok Leyland OE number FKS00900 and the Bosch model CRIN2-16-BL are shown as Reference. Net weight, flow rate, coil resistance, per-unit opening pressure and the injector correction code are left as Not published because sources conflict or the manufacturer does not release them, so only the packaged shipping weight of 1.0 kg is stated. Pressure is a CRIN2-16 class rating, not a per-unit calibration, so we state only what we can verify for this diesel injector. Injector identification: the code 0445120398 and the Ashok Leyland number FKS00900 are stamped on the body, and that is the same identification a diesel injector rebuilder reads before ordering.

Cross-Reference & Interchanges
Need a 0445120398 cross reference or a 0445120398 equivalent? The Bosch CRIN2 interchange numbers below are the ones buyers match against. All are reference interchanges only.
For an injector cross reference, the Bosch 0 445 120 398 number is the reference and this 0445120398 bosch replacement is a Vidishi Auto compatible unit. Run a 0445120398 cross reference against the etched code, or look for a 0445120398 equivalent, and both resolve to the same CRIN2 assembly: the ashok leyland oe number FKS00900, also written FKS 00900, and the Bosch model crin2-16-bl. Those numbers are published so a buyer can match the correct replacement; we are an independent supplier, not an Ashok Leyland or Bosch distributor.
Key Features
Why the 0445120398 CRIN2 unit is built for Ashok Leyland truck and bus service.
CRIN2 high pressure injector
Rated to the CRIN2-16 class, 1600 bar, for precise metering under full load on Ashok Leyland truck and bus diesels.
Complete unit, not a tip
The whole solenoid injector is supplied — a direct replacement for the Bosch common-rail unit on Ashok Leyland trucks and buses.
Built for duty cycle
Specified for long-haul duty and stop-start city work across Ashok Leyland truck, tipper and bus fleets.
New and warranted
Supplied new with a 12-month warranty against manufacturing defects.
Compatible brand
Vidishi Auto compatible replacement — reference interchanges only, not a genuine Bosch part.
Precise metering
Solenoid valve design for stable idle and clean combustion after a bench test.
The diesel injector technology here is CRIN2 solenoid common rail injector technology, a high pressure diesel injector built for Ashok Leyland heavy-duty diesels. This bosch cri injector uses a solenoid valve injector for precise metering and is a precision diesel injector supplied new. Each unit is a bosch diesel injector reference built to the Bosch CRIN2 specification, so the same part works across the truck and bus fleet.

Failure Symptoms
Common rail injector symptoms to watch for on an Ashok Leyland truck or bus engine, and the checks that separate a tired unit from a healthy one.
| Symptom | What it usually means |
|---|---|
| injector leakage | An internal leak loses rail pressure between injections and can coke the tip. |
| injector misfire | A weak or seeping unit drops combustion quality on one cylinder at idle and under load. |
| injector failure | Long service wears the valve seat; the unit loses calibration before it stops. |
| black smoke diesel engine | Poor atomisation from a worn spray raises soot and exhaust opacity under load. |
| hard start injector | Low cranking compression on one cylinder or a leaking seat delays start-up. |
| injector fault code | An ECU cylinder-balance or circuit code points to one unit for a bench test. |
| weak spray pattern | A worn cone shows an uneven, narrow spray rather than a clean fan on the tester. |
Two measurements do most of the work: an injector return flow test against the CRIN2 spec, and a bench spray and seat-leak check. Bad injector symptoms and diesel injector symptoms rarely point to the injector alone — contamination past the filter, and a high-pressure fuel injection pump shedding debris, repeat the same damage, so fix the root cause as well as the unit. Some ECU generations store an injector coding value that must be written after replacement. If you are chasing a cylinder-balance code rather than a mechanical fault, start from the fault code library before pulling the unit.
How to replace common rail injector on an Ashok Leyland
A bench-side walk-through of injector installation for the 0445120398, from a single injector replacement to a full bench test.
Confirm the code
Match the etched 0445120398 / 0 445 120 398 and the Ashok Leyland engine code plate before removal.
Relieve pressure
Depressurise the common rail and isolate the battery before opening the fuel lines.
Remove and inspect
Unbolt the old unit, fit a fresh copper seal, and check the bore and seat for scoring or debris.
Fit to injector torque
Seat the new 0445120398 to the clamp 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 the bench test on spray pattern, seat leak and return flow before refitting.
Use an injector removal tool and an injector tester to confirm spray and seat, and torque to the injector torque spec with a fresh copper washer. A common rail injector replacement on an Ashok Leyland truck or bus needs a clean high-pressure line and a new seal every time, and the injector installation is not finished until the correction value is written where the ECU requires it. Keep an injector service kit on the shelf for seals and washers. Part numbers and service notes for the family sit under our installation guides.

Warranty & Support
Every 0445120398 unit is covered against manufacturing defects, handled against the batch number on the box.
The 12-month cover runs from the ship date and is handled against the batch number recorded on the box, so a claim is quick to verify.
Contaminated fuel, water in the system, incorrect fitting, or a root fault elsewhere in the fuel system.
Send the batch number and a bench report to open a claim, and the full procedure sits on the Warranty Policy page.
Each unit is logged by batch so a replacement is matched to the exact consignment it came from.
The bosch injector warranty reference is shown only as the Bosch interchange, not as a brand claim, and the cover is issued by us, not by Bosch or Ashok Leyland. We are an independent supplier of compatible replacement parts. Returns and remittance follow our returns policy.
Wholesale & Bulk Supply
As a common rail injector supplier we ship to importers, workshops, fleets and injector rebuilders serving the Ashok Leyland aftermarket. Send a wholesale RFQ and we reply with a per-unit or bulk quote, from a trial pack to a diesel injector bulk order.
Wholesale orders start at 4 pcs, and volume tiers are quoted on the same RFQ so you can trial a bank set before a container.
Send the quantity and destination port and we return price, MOQ and lead time in one message, within 24 hours.
Sample batches and mixed SKU containers are quoted together, so a fleet can trial one family at a time.
Export documentation, packing list and HS code are provided with every consignment, with a tracking reference.
We are an injector distributor of Vidishi Auto compatible parts; a bosch injector manufacturer reference is shown only as the Bosch interchange. For diesel injector wholesale or a diesel injector bulk order we act as your common rail injector supplier and reply with price, MOQ and lead time in one message. Programmes and pricing tiers are listed under wholesale pricing.

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 27 x 12 x 13.5 cm export box at 1.0 kg gross, foam-lined to protect the tip.
Commercial invoice, packing list, HS code documentation and a tracking reference travel with every consignment.
Every injector export shipping consignment ships in a 27 x 12 x 13.5 cm box at 1.0 kg gross with full export documents, and order status is visible under track order. A diesel injector export order is quoted per order because lead time moves with quantity and freight mode; see shipping information for freight modes and rules.
Buyer Feedback
Field notes from workshops and fleets running the 0445120398 on Ashok Leyland trucks and buses.
Matched the old 0 445 120 398 on our Ashok Leyland haulage fleet; smooth idle and clean combustion after a bench test. Compatible part, not an original Bosch unit — exactly what we needed for the price.
Two units replaced tired injectors on city buses; rail pressure restored and smoke dropped. Every unit passed an injector quality check and a diesel injector test before dispatch.
Frequently Asked
Common questions about the 0445120398 common rail injector and ordering a compatible replacement.
Is 0445120398 genuine Bosch?
Can you run a 0445120398 fitment check before I order?
What is the 0445120398 application — which vehicles fit it?
How does a common rail injector work?
What is the 0445120398 minimum order quantity?
Can a diesel injector be repaired?
What engines use the 0445120398 injector?
Is the 0445120398 a complete injector or a component?
What is the 0445120398 injection pressure?
What are the 0445120398 warranty terms?
How is the 0445120398 shipped?
Why buy a Vidishi Auto compatible 0445120398?
Need Help Matching?
Send the engine nameplate and the old injector photo; we confirm the 0445120398 match before you pay.
Instant fitment check — wa.me/8613509025030
Formal quote — [email protected]
Warranty — cover, claims and exclusions for the 0445120398.
Shipping — packing, freight modes and return rules.
For diesel injector technical support and general injector support, send the engine nameplate and old injector photo; our team confirms the 0445120398 match on WhatsApp before you pay. Full contact routes sit on the contact page and the FAQ. We are an independent supplier of compatible replacement parts built to the Bosch 0 445 120 398 specification.


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