Fuel Injector Nozzle for John Deere 450C 450D 400G Crawler Dozer
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
We do our best to list all compatible models, but equipment can vary by engine, serial number and production configuration. Use the part numbers and fitment details below to confirm your application.
| Equipment / Engine | Compatible Application |
|---|---|
| John Deere crawler/dozer | 400G |
| John Deere crawler/dozer | 450C |
| John Deere crawler/dozer | 450D |
Product Overview
The injector nozzle shapes and atomizes the diesel spray entering the combustion chamber. Worn nozzle tips or poor sealing can produce smoke, rough combustion, hard starting, reduced power or excessive fuel consumption.
These crawler models span different production years and engine builds, so injector/nozzle selection should be based on the engine serial and the number on the original injector whenever possible. The machine model is a useful starting point but not a complete calibration match.
Key Features & Performance
- Service nozzle for compatible John Deere crawler diesel applications
- Supports proper fuel atomization and combustion when the original nozzle is worn
- Application includes 400G, 450C and 450D listing family
- Best matched by injector number and engine build
Specifications
| Part type | Diesel fuel injector nozzle |
| Application | John Deere crawler/dozer |
| Fitment method | Verify engine and injector/nozzle number |
Before You Order
Confirm engine serial/build and the original injector/nozzle number. Injection components can have different opening pressures or spray specifications even on similar machines.
Frequently Asked Questions
Can a worn nozzle cause black or white smoke?
Yes. Poor atomization, dribbling or incorrect opening behavior can contribute to smoke, although compression, timing and other fuel-system problems should also be checked.
Is this an OEM part?
This listing is for a replacement component for the applications shown above. Match the reference number, physical configuration and machine or engine details before ordering.