Isuzu 4BD1 Oil Pump and Oil Strainer Parts Catalog for Hitachi EX120-3
Use this parts catalog to identify oil pump, oil strainer and related components for the Isuzu 4BD1 configuration listed in the Hitachi EX120-3 catalog. Compare 23 catalog entries, diagram positions and alternative number formats before requesting a quote from WinsDiesel.
Equipment Identification for Your Enquiry
The diagrams and tables below reference Hitachi EX120-3. For enquiries involving Hitachi EX100WD-2, EX100WD-3, EX120, EX120-2, EX120K-2, EX120K-3 or EX150, send the engine and machine serial numbers and the complete existing part number so the configuration can be checked. A shared engine name alone does not confirm that every listed component fits each machine.
Components Listed in This Group
- PUMP ASM; OIL
- SEAT; SPR
- PIN; SPLIT
- SPRING; COIL
- GEAR; DRIVEN,OIL PUMP
- GEAR SET; OIL PUMP
- BOLT; OIL PUMP
- PINION; OIL PUMP DRIVING
- SHAFT; OIL PUMP
- COVER; OIL PUMP
View diagrams | Part number list | Selection notes | Request a quote
Selecting Oil Pump and Oil Strainer
The pump, strainer, gears and relief-valve components appear as separate entries. Include the original pump number and specify whether a complete assembly or an individual internal part is required.
Catalog reference: Hitachi EX120-3. 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.
Oil Pump and Oil Strainer Diagrams
Diagram 1 — 051A0150794
Oil Pump and Oil Strainer parts reference — drawing 051A0150794. Click to view the full-size diagram; use the positions and complete part numbers in the table below.
Diagram 2 — 051A0250794
Oil Pump and Oil Strainer parts reference — drawing 051A0250794. Click to view the full-size diagram; use the positions and complete part numbers in the table below.
Diagram 3 — 051A0350794
Oil Pump and Oil Strainer parts reference — drawing 051A0350794. 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 |
|---|---|---|---|---|---|
| 1(F). | 8943775391 | 8-94377539-1 894377-5391 8-94377-539-1 |
PUMP ASM; OIL Catalog qty: [1] |
— | Request a Quote |
| 2. | 5131650040 | 5-13165004-0 513165-0040 5-13165-004-0 |
SEAT; SPR Catalog qty: [1] |
— | Request a Quote |
| 3. | 9081040300 | 9-08104030-0 908104-0300 9-08104-030-0 |
PIN; SPLIT Catalog qty: [1] |
— | Request a Quote |
| 5. | 5095800980 | 5-09580098-0 509580-0980 5-09580-098-0 |
SPRING; COIL Catalog qty: [1] |
— | Request a Quote |
| 8. | 5131250020 | 5-13125002-0 513125-0020 5-13125-002-0 |
GEAR; DRIVEN,OIL PUMP Catalog qty: [1] |
— | Request a Quote |
| 8. | 5131250020 | 5-13125002-0 513125-0020 5-13125-002-0 |
GEAR; DRIVEN,OIL PUMP Catalog qty: [1] |
— | Request a Quote |
| 8. | 5131250020 | 5-13125002-0 513125-0020 5-13125-002-0 |
GEAR; DRIVEN,OIL PUMP Catalog qty: [1] |
— | Request a Quote |
| 19(A). | 5878102022 | 5-87810202-2 587810-2022 5-87810-202-2 |
GEAR SET; OIL PUMP Catalog qty: [1] |
— | Request a Quote |
| 19(A). | 5878102022 | 5-87810202-2 587810-2022 5-87810-202-2 |
GEAR SET; OIL PUMP Catalog qty: [1] |
— | Request a Quote |
| 29. | 0500410250 | 0-50041025-0 050041-0250 0-50041-025-0 |
BOLT; OIL PUMP Catalog qty: [2] |
— | Request a Quote |
| 29. | 0280810250 | 0-28081025-0 028081-0250 0-28081-025-0 |
BOLT; OIL PUMP Catalog qty: [2] |
— | Request a Quote |
| 32(A). | 1131280180 | 1-13128018-0 113128-0180 1-13128-018-0 |
PINION; OIL PUMP DRIVING Catalog qty: [1] |
— | Request a Quote |
| 34. | 5131210140 | 5-13121014-0 513121-0140 5-13121-014-0 |
SHAFT; OIL PUMP Catalog qty: [1] |
— | Request a Quote |
| 34. | 5131210140 | 5-13121014-0 513121-0140 5-13121-014-0 |
SHAFT; OIL PUMP Catalog qty: [1] |
— | Request a Quote |
| 35(A). | 5131130351 | 5-13113035-1 513113-0351 5-13113-035-1 |
COVER; OIL PUMP Catalog qty: [1] |
— | Request a Quote |
| 35(A). | 5131130351 | 5-13113035-1 513113-0351 5-13113-035-1 |
COVER; OIL PUMP Catalog qty: [1] |
— | Request a Quote |
| 35(A). | 5131130351 | 5-13113035-1 513113-0351 5-13113-035-1 |
COVER; OIL PUMP Catalog qty: [1] |
— | Request a Quote |
| 40. | 1131230160 | 1-13123016-0 113123-0160 1-13123-016-0 |
COUPLING; PINION TO SHAFT Catalog qty: [1] |
— | Request a Quote |
| 41. | 5098430030 | 5-09843003-0 509843-0030 5-09843-003-0 |
BALL; OIL RELIEF VLV Catalog qty: [1] |
— | Request a Quote |
| 42(C). | 8943775721 | 8-94377572-1 894377-5721 8-94377-572-1 |
STRAINER; OIL,OIL PUMP Catalog qty: [1] |
— | Request a Quote |
| 43(E). | 8943445910 | 8-94344591-0 894344-5910 8-94344-591-0 |
BOLT; CASE Catalog qty: [4] |
— | Request a Quote |
| 43(E). | 8943445910 | 8-94344591-0 894344-5910 8-94344-591-0 |
BOLT; CASE Catalog qty: [4] |
— | Request a Quote |
| 56. | 1096231630 | 1-09623163-0 109623-1630 1-09623-163-0 |
GASKET; RELIEF VALVE Catalog qty: [1] |
— | 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.



