Excavator Engine Parts

320-0680 Common-Rail Fuel Injector for Cat C4.4 C6.6

Q: What numbers are documented for 320-0680?

Primary Equipment Part Number: 320-0680. Current Manufacturer Alternative: 2645A747. Remanufactured Alternative: 10R-7672. Cataloged Alternative Part Number: 2645A718. Cataloged Alternative Part Number: 2645A734. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm 320-0680 before ordering?

Match the complete part number, compare the connector or mounting arrangement with the product photos, and confirm the machine or engine model and serial range. Send clear photos of the original unit when requesting a quote.

320-0680 Common-Rail Fuel Injector for Cat C4.4 C6.6, OEM/reference 320-0680, Common-Rail Fuel Injector, product view 1

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OEM / reference320-0680

SpecificationCommon-Rail Fuel Injector

Catalog ID88170117

Common-rail fuel injector identified by Cat number 320-0680 for C4.4 and C6.6 engine families. The official Cat parts page identifies it as a fuel-injector group and lists compatible C4.4 / C6.6 engines plus multiple wheel excavators, compactors, pavers and other machines. Cat lists 10R-7672 as the remanufactured alternative; it is not presented as a new direct-interchange number. Confirm the engine arrangement, injector calibration code and machine serial range.

Product Type: Common-Rail Fuel Injector
Product Brand: EexcavaStart
Fuel System: High-pressure common rail
Official Length: 223.5 mm
Official Height: 121.9 mm
Official Width: 129.5 mm
Calibration: Confirm injector code and engine arrangement
Condition: New replacement part

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Part-number relationships

Relationship	Reference family	Number
Primary Equipment Part Number	Cat new fuel-injector group number	320-0680
Current Manufacturer Alternative	Cataloged current injector number	2645A747
Remanufactured Alternative	Cat Reman common-rail injector	10R-7672
Cataloged Alternative Part Number	Injector catalog alternative	2645A718
Cataloged Alternative Part Number	Injector catalog alternative	2645A734

Product fitment guide

Part numbers and compatible models

Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.

Part identification

Reference numbers

Primary number

320-0680

Manufacturer number

2645A747

Remanufactured number

10R-7672

Other documented relationship

2645A718
2645A734

Formatting aliases are the same number written differently. Related assemblies and remanufactured numbers are not presented as direct interchanges.

Product summary

Common-Rail Fuel Injector

Category: Excavator Engine Parts
Catalog ID: 88170117
Photo views: 4

Before ordering

Confirm these details

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.

Machine fitment

Compatible model references

4 model references

Official engine families: Cat C4.4 / C6.6
Official wheel-excavator examples: M313D / M315D / M316D / M317D2 / M318D / M322D
Additional official machine families: Selected compactors, pavers, backhoe loaders, telehandlers and generator sets
Fitment limitation: Confirm 320-0680, engine arrangement, injector calibration and machine serial range

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

Common questions about 320-0680

Which machines use 320-0680?

Recorded compatible model references include Official engine families: Cat C4.4 / C6.6, Official wheel-excavator examples: M313D / M315D / M316D / M317D2 / M318D / M322D, Additional official machine families: Selected compactors, pavers, backhoe loaders, telehandlers and generator sets, Fitment limitation: Confirm 320-0680, engine arrangement, injector calibration and machine serial range. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 320-0680?

Manufacturer number: 2645A747. Remanufactured references: 10R-7672.

How do I confirm 320-0680 before ordering?

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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