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Bosch
0445110507 Bosch Fuel Injector 129E00-53100 for Yanmar 4TNV98C 3.3L Diesel Engines
0445110507 Bosch Fuel Injector 129E00-53100 for Yanmar 4TNV98C 3.3L Diesel Engines
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Genuine new Bosch 0445110507 common rail fuel injector (Yanmar OE 129E00-53100) for the Yanmar 4TNV98C 3.3 litre four-cylinder diesel engine fitted to industrial, agricultural and construction machinery. It is supplied new in the original sealed Bosch box, made in Japan by Bosch Corporation, with a 1-year manufacturer global warranty and no core charge, so no old part has to be returned.
The 0445110507 is a solenoid-operated injector from the Bosch CRI2-16 OHW family. The engine ECU energises the solenoid, the control valve releases the nozzle needle and fuel held at rail pressure is atomised into the combustion chamber. Fitting a new injector restores the correct injection quantity and spray pattern, which is what brings back clean starting, a stable idle and full rated power on a tired 4TNV98C.
Individual injector accuracy (IMA) coding is required. Each injector carries an individual IMA (IQA) calibration code, laser-marked on the injector body, that describes that injector's exact actuation timing and injected fuel quantity. After installation the code must be written to the engine ECU with a diagnostic tool, so the ECU can drive the injector precisely. Skipping this step can cause rough running, smoke or stored diagnostic trouble codes.
Also known internationally as: common rail injector (EN), Common-Rail-Injektor / Einspritzduse (DE), injecteur common rail (FR), iniettore common rail (IT), inyector common rail (ES), injector common rail (RO) - Bosch 0445110507 for Yanmar 4TNV98C.
Key Features
| Feature | Details |
|---|---|
| Product type | Bosch CRI2-16 OHW solenoid common rail fuel injector |
| Brand | Genuine Bosch |
| Part number | 0445110507 (0 445 110 507) |
| Yanmar OE number | 129E00-53100 (129E0053100) |
| Engine compatibility | Yanmar 4TNV98C 3.3 L four-cylinder diesel engine |
| Actuator type | Electromagnetic solenoid with two-pin connector |
| Coding | IMA coded: the injector calibration code must be written to the ECU after fitting |
| Condition | New, in the original sealed Bosch box, no core charge |
| Fitment type | Direct OEM replacement when the part numbers match |
| Warranty | 1-year manufacturer global warranty |
Product Details
| Product detail | Information |
|---|---|
| Main Bosch part number | 0445110507 (0 445 110 507) |
| Bosch injector family | CRI2-16 OHW |
| Yanmar OE number | 129E00-53100 (129E0053100) |
| Product category | Common rail diesel fuel injector |
| Manufacturer | Bosch |
| Condition | Brand new genuine Bosch part in original manufacturer packaging |
| Country of manufacture | Japan |
| EAN / GTIN | 4047025670777 |
| Included in package | 1 x Bosch injector with body O-ring. The nozzle sealing washer is NOT included and must be sourced separately; fitting a new sealing washer is recommended |
| Weight | 0.538 kg |
| Package dimensions | 30 x 10 x 10 cm |
| Core charge | None. No old part has to be returned |
Cross-Reference Numbers
Compare the number marked on your original injector before ordering. The engine or machine model alone is not enough to confirm compatibility.
| Brand / manufacturer | Cross-reference numbers |
|---|---|
| Bosch | 0445110507, 0 445 110 507, CRI2-16 OHW, CRI216OHW |
| Yanmar | 129E00-53100, 129E0053100 |
Engine Compatibility
Compatibility must always be verified by the Bosch part number, the Yanmar OE number, the engine serial number or the identification marking on the original injector. The engine designation alone is not sufficient.
| Make | Engine code | Cylinders | Displacement | Power | Production |
|---|---|---|---|---|---|
| Yanmar | 4TNV98C | 4 | 3.3 L | 42.4-51.7 kW | 09/2014 onwards |
The 4TNV98C is a naturally aspirated in-line four-cylinder diesel engine used in compact construction equipment, agricultural machines, generator sets and other industrial and off-highway applications. Yanmar also built 4TNV98C engines with injector 0445110969 (Yanmar 129E00-53110), so confirm the number on the injector fitted to your engine before ordering. The turbocharged 4TNV98CT uses different injectors (0445110508 or 0445110970) and is not covered by this listing.
Technical Information
| Technical specification | Information |
|---|---|
| Injector type | CRI2-16 OHW electromagnetic common rail fuel injector |
| Actuator technology | Solenoid valve, faster and simpler to drive than a piezo injector and standard on this Yanmar engine family |
| Electrical connection | Two-pin injector connector |
| Fuel system type | Bosch common rail diesel injection system |
| Fuel type | Diesel |
| ECU coding | IMA / IQA calibration code must be written to the ECU after installation |
| Application field | Industrial, agricultural and construction diesel engines |
| Compatibility verification | Bosch number, OE number, engine serial number or injector marking required |
Related Diesel Fuel System Parts
These are the Bosch fuel system components used alongside this injector on the Yanmar 4TNV98C. Manufacturers fitted different variants depending on engine build, power rating, emissions stage and production date, so another code may be the correct one for your engine. Identify every part by the number marked on the unit fitted to the engine, not by the engine model.
| Product type | Part number | References | Observation |
|---|---|---|---|
| High-pressure fuel pump (CP4) | 0445020538, 0445020509 | Yanmar 129C28-51000, 129A00-51000, Bobcat 7029317 | CR/CP4N1/L43/20-11S |
| Fuel metering unit (ZME) for the CP4 pump | 1462C00983, 0928400800, 0928400752 | Yanmar 129A00-51100 | ZME4 |
| Fuel rail, four-cylinder | 0445214271 | Yanmar 129C00-57000 | CR/V4/10-23S |
| Fuel rail pressure sensor | 0281006322, 0281006233 | Mitsubishi Heavy Industries 32R61-07200, 32R6107200 | RDS4.2, 1500 bar, M18x1.5 |
| Rail pressure limiting valve | 1110010024 | GM 97358556, Isuzu 8-97358-556-1, MAN 51 10304 0300, Mitsubishi Heavy Industries 32K6107300, Perkins T4 13278 | PLV4-16/4 |
Compatibility Note
Verify the Bosch number, the Yanmar OE number, the engine serial number or the marking on the original injector before purchase. Do not install the part before checking compatibility. Installed or used fuel system parts may not be eligible for return.
Shipping and Warranty
| Shipping / warranty detail | Information |
|---|---|
| Shipping | Same-day handling for stock items |
| Pre-order availability | Pre-order items may require 2-4 weeks handling time |
| Warranty | 1-year manufacturer global warranty covering manufacturing defects |
| Returns | Returns accepted only for unused and uninstalled parts in original condition |
| Fitment responsibility | Buyer must verify compatibility before installation |
| Installation damage | Damage caused by incorrect installation, missing ECU coding, contaminated fuel or incorrect application is not covered |
Frequently Asked Questions
| Question | Answer |
|---|---|
| How do I know Bosch 0445110507 fits my Yanmar engine? | Match the number laser-marked on the injector currently fitted to the engine, or the Yanmar number 129E00-53100, against this listing. The 4TNV98C designation alone is not enough, because the same engine was also built with injector 0445110969. |
| Is 129E00-53100 the same part as 0445110507? | Yes. 129E00-53100 is the Yanmar original equipment number and 0445110507 is the Bosch ordering number for the same injector. Both numbers are marked on the unit shown in the photographs. |
| What condition is this injector supplied in? | It is a genuine new Bosch injector, supplied in the original sealed Bosch box, made in Japan, with a 1-year manufacturer global warranty. There is no core charge, so no old injector has to be returned. |
| Does this injector need coding after installation? | Yes. It is IMA coded. The calibration code marked on the injector body describes its actuation timing and injected fuel quantity and must be written to the engine ECU with a diagnostic tool; otherwise the engine can run rough, smoke or store diagnostic trouble codes. |
| What does CRI2-16 OHW mean? | It is the Bosch internal type designation for this injector family. CRI stands for common rail injector, generation 2, and the code identifies the solenoid injector series used on these Yanmar engines. Buyers normally order by 0445110507 or by the Yanmar number. |
| Is the sealing washer included? | No. The injector is supplied with its body O-ring only. The nozzle sealing washer is NOT included and must be sourced separately. Fitting a new sealing washer is recommended. |
| Why does the Bosch box read 0 445 110 507 -KUH? | Bosch prints the ordering number with spaces on the label and adds its own packaging suffix after it. The part supplied is the injector 0445110507 with EAN 4047025670777, as shown on the box label in the photographs. |
| Should I replace all four injectors at the same time? | Yes, we recommend testing all four injectors and replacing them as a complete set. The injectors on a 4TNV98C have run the same hours and are worn to a similar degree, so fitting one new injector next to three worn ones leaves the cylinders working unevenly. The new injector then runs under a different load than the rest and wears faster, which is why a partial replacement often ends in a second repair. |
| Can a failing high-pressure pump damage a new injector? | Yes. A high-pressure pump that has worn internally releases metallic debris into the fuel circuit, and an injector fitted into a system that still contains that contamination will fail again in a short service period. The complete fuel system must be decontaminated before new injectors are installed. |
| Do you ship worldwide? | Yes, we ship worldwide. |
Diagnostic Information
Common Symptoms of a Failing Injector on the Yanmar 4TNV98C
A worn or leaking injector on the 4TNV98C typically presents as extended cranking or a hard start when cold, an unstable idle with a knocking cylinder, black or white smoke under load, reduced power, higher fuel consumption and excessive leak-off on the return line. These symptoms overlap with rail pressure faults, a worn high-pressure pump, a restricted fuel filter and low-pressure supply problems, so a professional fuel-system test must be carried out before replacing any parts, to confirm the injectors are the actual cause of the fault.
Installation and System Check
The fuel system must be checked for contamination before any new injector is fitted, whatever the cause of the fault. Inspect the fuel filter and its housing, together with the inlet screens of the solenoid valves on the high-pressure pump and on the rail (fuel metering unit and pressure limiting valve), because that is where debris and sticky deposits appear first.
Affected components are cleaned or replaced: fuel tank, supply and return lines, filter housing and filters, common rail and high-pressure pump. High-pressure lines and connector tubes are replaced, not cleaned. Flush the system, fit new filters and bleed it following the engine manufacturer's procedure.
Metallic debris from a failing high-pressure pump is only one cause of contamination. Poor or contaminated diesel is just as common, typically from badly stored fuel, tanks that are not cleaned periodically, or contaminated containers used for refuelling.
At installation, inspect the injector bore and the washer seat in the cylinder head, fit a new sealing washer, and torque the clamp and the high-pressure line to the Yanmar specification. After fitting, write the IMA calibration code of the new injector to the ECU and clear the stored diagnostic trouble codes. An injector installed into a system that has not been decontaminated will fail again within a short service period, and that failure is not covered by warranty.
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