Browse PC400-7 engine, hydraulic and service-part listings, with direct access to the registered 04120-21760 V-belt and 600-815-2170 relay switch. Check old-part markings and machine details before treating a catalog association as confirmed fitment.
A sales model alone does not prove that every listed part fits every machine. Production date, serial range, engine, market specification and installed configuration can change the correct part number.
Komatsu's regional used-equipment catalog identifies PC400-7 as an excavator. That listing describes one individual machine; its year, weight and equipment are not used here as universal PC400-7 specifications. This hub keeps the -7 generation explicit and does not infer compatibility with other PC400 generations.
For 04120-21760, compare the printed old-belt number, installed drive position and pulley arrangement. The corrected product photograph is available on its detail page. A correct product photo does not by itself verify every PC400-7 application.
For 600-815-2170, provide the old relay marking and connector photographs. State the installed location and any technician-recorded symptoms. This hub does not assign an unverified voltage or terminal specification.
Separate return, pilot and engine service elements in your list. Record the filter housing or assembly number and whether the component has previously been replaced; a similar outline is not sufficient to select the element.
Machine references support the statements above, not individual part fitment. Prepared by Danch Machinery · Reviewed 2026-09-10.
These are registered catalog associations. Each part requires a machine and serial-number check before ordering.
| Part number | Registered product | Application status |
|---|---|---|
| 04120-21760 | 04120-21760 V-Belt for Komatsu PC400-7 | Pending serial-number verification |
| 600-815-2170 | 600-815-2170 Relay Switch | Pending serial-number verification |
| 208-70-73520 | 208-70-73520 Pin for Komatsu | Pending serial-number verification |
| 707-76-10140 | 707-76-10140 Bushing for Komatsu | Pending serial-number verification |
| 208-70-72170 | 208-70-72170 Bushing for Komatsu | Pending serial-number verification |
Yes. The product page now uses the business-supplied V-belt photograph. Official product identity evidence is recorded, while the machine-specific application remains subject to serial and installation checks.
No universal fitment is claimed. PC400-7 is retained as a registered association; send the machine serial number and old relay or connector details before ordering.
A different generation must be checked separately. Provide both exact part numbers and a catalog reference or documented supersession before treating the parts as interchangeable.
These are general guides, not a model-specific service manual.
These links describe how currently associated products are organized. They do not replace product-level model and serial verification.
Only product-to-model records supported by active internal evidence appear in this table.
Products may still be shown below as current catalog associations, but none are presented here as verified fitment until supporting evidence is reviewed.
Open a product page to review its part number, images and current verification status.
Model association: Komatsu PC400-7. Confirm the complete serial number and configuration before ordering.
Review product →
Model association: Komatsu PC400-7. Confirm the complete serial number and configuration before ordering.
Review product →
Model association: Komatsu PC400-7. Confirm the complete serial number and configuration before ordering.
Review product →
Model association: Komatsu PC400-7. Confirm the complete serial number and configuration before ordering.
Review product →
Model association: Komatsu PC400-7. Confirm the complete serial number and configuration before ordering.
Review product →
Model association: Komatsu PC400-7. Confirm the complete serial number and configuration before ordering.
Review product →
Model association: Komatsu PC400-7. Confirm the complete serial number and configuration before ordering.
Review product →
Model association: Komatsu PC400-7. Confirm the complete serial number and configuration before ordering.
Review product →
Model association: Komatsu PC400-7. Confirm the complete serial number and configuration before ordering.
Review product →
Model association: Komatsu PC400-7. Confirm the complete serial number and configuration before ordering.
Review product →
Model association: Komatsu PC400-7. Confirm the complete serial number and configuration before ordering.
Review product →
Model association: Komatsu PC400-7. Confirm the complete serial number and configuration before ordering.
Review product →
Model association: Komatsu PC400-7. Confirm the complete serial number and configuration before ordering.
Review product →
Model association: Komatsu PC400-7. Confirm the complete serial number and configuration before ordering.
Review product →
Model association: Komatsu PC400-7. Confirm the complete serial number and configuration before ordering.
Review product →
Model association: Komatsu PC400-7. Confirm the complete serial number and configuration before ordering.
Review product →Use the current manufacturer manual and qualified technical personnel for procedures, limits and safety decisions.
Record the full model, complete serial number, engine model and market or configuration suffix from the nameplate.
Provide the old part number, packaging label, installed position and clear photos. Do not rely on appearance alone.
Include operating hours, warning codes, leakage or damage location, recent service work and relevant measurements.
Before ordering for belt noise or wear, record the installed belt position, readable markings and machine identity with the equipment…
Read guidance →
Genuine describes brand identity and traceable supply; OEM is used inconsistently in the market; aftermarket describes a supply category; reman…
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First distinguish no-crank from an engine that cranks but will not start. For a no-crank complaint, preserve the key-action response,…
Read guidance →Send the part number, complete serial number, nameplate and product photos for review.
Send the part number, machine model and photos. We will cross-check the application and reply within 24 hours.
