Isuzu 4BG1 Injection Pump Coupling Parts Catalog for Hitachi ZX120
Use this Group 087 parts catalog to identify injection pump coupling and related components for the Isuzu 4BG1 configuration listed in the Hitachi ZX120 catalog. Compare 7 catalog entries, diagram positions and alternative number formats before requesting a quote from WinsDiesel.
Components Listed in This Group
- COUPLING; INJ PUMP DRIVE
- BOLT; COUPLING FIX,INJ PUMP
- NUT; COUPLING FIX,INJ PUMP
- PLATE; LK,COUPLING FIX,INJ PUMP
- WASHER; COUPLING FIX,INJ PUMP
- GEAR; COUPLING
- BOLT; GEAR TO COUPLING
View diagrams | Part number list | Selection notes | Request a quote
Selecting Injection Pump Coupling
Match the coupling assembly and individual components using the complete numbers and original notes. Include photos of the existing coupling and its connection to the pump.
Catalog reference: Hitachi ZX120; engine configuration 4BG1-TCG. Confirm the engine serial number, machine details and complete existing part number before ordering. Different part numbers sharing one diagram position must not be assumed to be interchangeable.
Group 087 — Injection Pump Coupling Diagrams
Diagram 1 — 4BG1-TCG-308701
Injection Pump Coupling parts reference — drawing 4BG1-TCG-308701. Click to view the full-size diagram; use the positions and complete part numbers in the table below.
Catalog diagrams identify components and are not photographs of the supplied products.
Part Numbers and Catalog Notes
Alternative number formats show the same digits with different hyphen placement. They are not substitute part numbers. Quantities and notes are retained from the catalog and do not represent stock availability.
| Ref. | Part Number | Alternative Number Formats | Catalog Description / Qty. | Original Catalog Notes | Enquiry |
|---|---|---|---|---|---|
| 001(A). | 5157810030 | 5-15781003-0 515781-0030 5-15781-003-0 |
COUPLING; INJ PUMP DRIVE Catalog qty: [1] |
— | Request a Quote |
| 002. | 9096620070 | 9-09662007-0 909662-0070 9-09662-007-0 |
BOLT; COUPLING FIX,INJ PUMP Catalog qty: [1] |
— | Request a Quote |
| 003(A). | 9884105020 | 9-88410502-0 988410-5020 9-88410-502-0 |
NUT; COUPLING FIX,INJ PUMP Catalog qty: [1] |
— | Request a Quote |
| 004. | 1156192470 | 1-15619247-0 115619-2470 1-15619-247-0 |
PLATE; LK,COUPLING FIX,INJ PUMP Catalog qty: [1] |
— | Request a Quote |
| 005. | 5156190480 | 5-15619048-0 515619-0480 5-15619-048-0 |
WASHER; COUPLING FIX,INJ PUMP Catalog qty: [1] |
— | Request a Quote |
| 027. | 1125240520 | 1-12524052-0 112524-0520 1-12524-052-0 |
GEAR; COUPLING Catalog qty: [1] |
— | Request a Quote |
| 030. | 8944575170 | 8-94457517-0 894457-5170 8-94457-517-0 |
BOLT; GEAR TO COUPLING Catalog qty: [6] |
— | Request a Quote |
Reading This Catalog
Descriptions and notes retain the original catalog wording. Abbreviations, grade markers and size notes should be checked together with the complete part number. Contact us if your existing number differs; a similar appearance or diagram position is not proof of interchangeability.
Request a Quote from WinsDiesel
Email winsparts@winsparts.com or use the enquiry link beside your required part. Include the complete part number, quantity, engine serial number, machine identification, old-part photos and delivery country. We will confirm the offered brand, specification, availability, supplied contents, price and lead time in our quotation.

