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Excavator Spare Parts

086-1781 Locking Fuel Tank Cap with Key for CAT Equipment

Name: 086-1781 Locking Fuel Tank Cap with Key for CAT Equipment
Brand: EexcavaStart
SKU: 086-1781

OEM / reference086-1781

SpecificationLocking Fuel Tank Cap with Key

Catalog ID53106861

Locking engine fuel-tank cap identified by CAT part number 086-1781. CAT's official record confirms a direct OEM replacement cap supplied with a key across a broad published equipment list. Four exact owned photographs show the same lock barrel, cap body and keys. Former co-listed numbers 099-8548 and 096-3100 are not published as interchanges without supporting evidence.

Fitment status: Verified · Checked 2026-08-02

Product Type: Locking fuel tank cap
Key: Included
Mounting Interface: Confirm against tank neck
Condition: New replacement cap

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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 locking fuel cap	086-1781
Formatted Alias	Same CAT number without separator	0861781
Unverified Source Co-Listing	Not asserted as direct interchange	099-8548
Unverified Source Co-Listing	Not asserted as direct interchange	096-3100

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

086-1781

Formatting alias

0861781

Other documented relationship

099-8548
096-3100

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

Product summary

Locking Fuel Tank Cap with Key

Category: Excavator Spare Parts
Catalog ID: 53106861
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 equipment: Models listed in the official 086-1781 compatibility record
Fitment limitation: Confirm 086-1781, filler-neck interface 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 086-1781

Which machines use 086-1781?

Recorded compatible model references include CAT equipment: Models listed in the official 086-1781 compatibility record, Fitment limitation: Confirm 086-1781, filler-neck interface and machine serial. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 086-1781?

Formatting aliases for the same number: 0861781.

How do I confirm 086-1781 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.

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