Injectors & Nozzle 1W-6539 for Caterpillar D3B

OEM / REF: 1W-6539SKU: pilotpart222830

Pump Group Fuel Injection 1W-6539 For Caterpillar Track Type Tractor D7G D4C D5H D5E is a Injectors & Nozzle replacement part indexed for CAT D3B and CAT D3BLGP, with 3 application records on file. Match OEM part number 1W-6539 and confirm fitment for Caterpillar Engine Spare Parts before ordering.

Stock
In stock
Condition
New
Fitment
Caterpillar Engine Spare Parts
  • Fitment support before you order
  • Worldwide delivery options

Injectors & Nozzle Description

This Injectors & Nozzle is indexed for CAT D3B; CAT D3BLGP; CAT D3BSA; CAT D3C. Compare reference number 1W-6539 against the label on your existing Caterpillar component before ordering.

Before checkout, compare OEM part number 1W-6539, connector layout, mounting position, and machine serial number. For high-value or fitment-sensitive parts, submit the fitment form below so support can verify the match.

Part Numbers and Cross References

Applications

  • CAT D3B
  • CAT D3BLGP
  • CAT D3BSA
  • CAT D3C
  • CAT D3CII
  • CAT D3CIILGP
  • CAT D3CLGP
  • CAT D3CSA
  • CAT D4B
  • CAT D4BLGP
  • CAT D4C
  • CAT D4CII
  • CAT D4CIILGP
  • CAT D4CLGP
  • CAT D4ESA
  • CAT D4HIIIXL
  • CAT D4HIILGP
  • CAT D5C
  • CAT D5E
  • CAT D5H
  • CAT D5HII
  • CAT D5HIILGP
  • CAT D5HIIXL
  • CAT D6D
  • CAT D6DLGP
  • CAT D6DSR
  • CAT D6G
  • CAT D6H
  • CAT D6HLGP
  • CAT D7G
  • CAT D7GLGP
  • CAT D7H

Specifications

Width (mm)40.64
Length (mm)182.88
Height (mm)40.64
Part Number1W-6539, 1W6539

Fitment Notes

Brand or application signal
Caterpillar Engine Spare Parts
Product family
Injectors & Nozzle
System category
Engine Spare Parts > Fuel System > Injectors & Nozzle
Recommended verification
OEM number, engine model, serial number, old part photos, and dimensions.

Shipping & Returns

Availability
InStock
Shipping
Shipping quotes can be confirmed before payment for heavy or urgent orders.
Returns
Returns are easier when fitment is confirmed before ordering.
B2B support
Bulk, fleet, and repair-shop requests can be handled through the inquiry form.

Frequently Asked Questions

How do I confirm this part fits my machine?

Match the OEM or reference number first, then verify machine model, engine model, serial number, connector layout, mounting points, and old part photos.

Can I order if my part number is not listed?

Yes. Send the old part number, machine plate, and photos through the fitment inquiry form. Support can review possible replacements or alternatives.

Is this an OEM part?

Products are indexed as replacement parts unless explicitly marked otherwise. Always compare reference numbers and confirm fitment before purchase.

Confirm fitment & quote details

Send machine details and nameplate photos before ordering high-risk or quote-only parts.