4 product photos · Select a thumbnail to change the main view.

Excavator Spare Parts

140-9378 12V 5-Pin Relay for CAT 301.5 Mini Excavator

Name: 140-9378 12V 5-Pin Relay for CAT 301.5 Mini Excavator
Brand: EexcavaStart
SKU: 140-9378

OEM / reference140-9378

Specification12V 5-Pin Electrical Relay

Catalog ID53105916

Sealed 12V five-pin relay identified by CAT reference 140-9378. CAT's official parts record confirms the relay specification, five-pin configuration and 301.5 mini excavator compatibility; four exact owned photographs show the matching black relay and terminal layout. The formerly co-listed 140-3030 is a CAT plate assembly for telehandlers, not a relay interchange, and is removed from the SKU and reference family.

Fitment status: Verified · Checked 2026-08-02

Product Type: Sealed electrical relay
Voltage: 12V DC
Pins: 5
Contacts: Silver contact
Housing: Sealed black relay body
Condition: New replacement relay

Send email inquiry Ask on WhatsApp Return to catalog

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

Part-number relationships

Relationship	Reference family	Number
Primary Part Number	CAT electrical relay	140-9378
Formatted Alias	Same CAT number without separator	1409378
Rejected Relationship	Different CAT plate assembly; not an interchange	140-3030

Fitment data verified. Exact-reference evidence is retained in the protected product audit record · Checked 2026-08-02.

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

140-9378

Formatting alias

1409378

Other documented relationship

140-3030

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

Product summary

12V 5-Pin Electrical Relay

Category: Excavator Spare Parts
Catalog ID: 53105916
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

2 model references

CAT mini excavator: 301.5
Fitment limitation: Confirm 140-9378, 12V, five-pin terminal pattern and machine serial

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 140-9378

Which machines use 140-9378?

Recorded compatible model references include CAT mini excavator: 301.5, Fitment limitation: Confirm 140-9378, 12V, five-pin terminal pattern and machine serial. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 140-9378?

Formatting aliases for the same number: 1409378.

How do I confirm 140-9378 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.

Continue comparing recovered references from the same system.

Browse this category