Excavator Engine Parts
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Dual-scroll mechanical unit injector identified by equipment part number 127-8218. The official exact-number record specifies an 8 mm plunger and lists 3116 and 3126 industrial engines. The official parts family also records 0R-8684 as a remanufactured alternative, not a second new-part number. Confirm the complete number, injector trim/calibration, plunger configuration and engine serial range before ordering.
Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
| Relationship | Reference family | Number |
|---|---|---|
| Primary Equipment Part Number | Exact equipment reference | 127-8218 |
| Same-number Formatting Variant | Punctuation-normalized search alias | 1278218 |
| Remanufactured Alternative | Official remanufactured injector reference | 0R-8684 |
| Same-number Formatting Variant | Punctuation-normalized reman reference alias | 0R8684 |
Product fitment guide
Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.
Part identification
Formatting aliases are the same number written differently. Related assemblies and remanufactured numbers are not presented as direct interchanges.
Product summary
Before ordering
Machine fitment
3 model references
Compatibility lists identify searchable model families, not every production serial range. Confirm the original part number and machine serial number before purchase.
Quick fitment answers
Recorded compatible model references include Engine model: CAT 3116, Engine model: CAT 3126, Fitment limitation: Confirm 127-8218, injector trim/calibration, 8 mm plunger and engine serial range. Confirm the complete part number and machine serial range before ordering.
Formatting aliases for the same number: 1278218, 0R8684. Remanufactured references: 0R-8684.
Match the complete part number on the original component. Compare connectors, mounting points and visible dimensions with the product photos. Confirm the exact machine or engine model and serial range before ordering. Send clear photos of the original unit and connector layout when requesting a quote.
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