Excavator Engine Parts

178-6598 M12 × 1.25 Hex Head Bolt for 312C 320C 320D 323D

Q: What numbers are documented for 178-6598?

Primary Part Number: 178-6598. Same-number Formatting Variant: 1786598. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm 178-6598 before ordering?

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

EexcavaStart packaging illustration · Not a photograph of this exact part. Exact-unit photo availability is not confirmed; send your original part number and unit photos with your inquiry.

OEM / reference178-6598

SpecificationHex Head Bolt

Catalog ID53385826

Product Type: Hex Head Bolt
Product Brand: EexcavaStart
Thread: M12 × 1.25, right-hand
Bolt Length: 135 mm
Grip Length: 22 mm
Condition: New replacement fastener
Gallery Representation: EexcavaStart neutral packaging illustration; exact product photo available on request

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Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.

Quotation details: MOQ, availability, lead time, item condition (new or remanufactured) and warranty coverage must be confirmed in your quotation before ordering.

Part-number relationships

Relationship	Reference family	Number
Primary Part Number	Exact-number product identity	178-6598
Same-number Formatting Variant	Search alias only	1786598

Product fitment guide

Part numbers and compatible models

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

Part identification

Reference numbers

Primary number

178-6598

Formatting alias

1786598

Formatting aliases are the same number written differently. Cross-references require a specification and fitment check; they do not by themselves confirm direct interchangeability. Related assemblies and remanufactured numbers are separate relationship types.

Product summary

Hex Head Bolt

Category: Excavator Engine Parts
Catalog ID: 53385826
Illustration views: 1

Before ordering

Confirm these details

Match the complete part number on the original component.
Compare connectors, mounting points and visible dimensions with your original unit and the recorded specifications.
Confirm the exact machine or engine model and serial range before ordering.

Machine fitment

Compatible model references

1 model reference

Excavator examples: 312C, 314C, 318C, 319C, 320C, 320D, 321C, 321D and 323D

Fitment / evidence notes

Fitment limitation: Verify thread, grip length, bolt length and equipment 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 178-6598

Which machines use 178-6598?

Recorded compatible model references include Excavator examples: 312C, 314C, 318C, 319C, 320C, 320D, 321C, 321D and 323D. Recorded fitment/evidence notes: Fitment limitation: Verify thread, grip length, bolt length and equipment serial range. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 178-6598?

Formatting aliases for the same number: 1786598.

How do I confirm 178-6598 before ordering?

Match the complete part number on the original component. Compare connectors, mounting points and visible dimensions with your original unit and the recorded specifications. 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.

Continue comparing verified references from the same system.

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