How do I confirm pilotpart243823 fits my machine?

Compare the OEM or reference part number, machine model, engine model, and serial number. You can also submit a fitment inquiry before ordering.

In Stock

Oil Pump 178-6539 For Cat Caterpillar Excavator E320B Engine 3066

For Caterpillar Oil Pump

Oil Pump 178-6539 for Caterpillar

Q: What part numbers are associated with this Oil Pump?

178-6539, 34335-23010, E320B, E320, E320C, 3066, EXCAVATORS320CFMST, 320CFMHWTRACK, EXCAVATORS318C, 320C, 319CLN, 320CL

OEM / REF: 178-6539SKU: pilotpart243823

Oil Pump 178-6539 For Cat Caterpillar Excavator E320B Engine 3066 is a Oil Pump replacement part indexed for Part Number and Cat Caterpillar Excavator E200B Engine 3066 Oil Pump 178-6539, with 3 application records on file. Match OEM part number 178-6539 and confirm fitment for Caterpillar Engine Spare Parts before...

Stock: In stock
Condition: New
Fitment: Caterpillar Engine Spare Parts
Category: Oil Pump

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$1,616.35USD/EA

~~$29,899.00~~Save 95%

Estimated delivery by quantity

Estimated delivery windows
Qty	Estimated delivery
1	Oct 22 – Oct 29
10	Oct 20 – Oct 27
50	Oct 18 – Oct 25

Estimates from today; confirm exact lead time before payment.

Quantity

Buy online now or add to your quote list for bulk pricing and fitment confirmation.

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Lead times can vary by freight route and customs. Contact support for expedited shipping.

Oil Pump Description

This Oil Pump is indexed for Part Number; Cat Caterpillar Excavator E200B Engine 3066 Oil Pump 178-6539; Model: Caterpillar Excavator E320B E320 E320C Engine: 3066 Details: FORESTRY EXCAVATORS320CFMST,320CFMHWTRACK EXCAVATORS318C,320C,319CLN,320CL,320CLU,320CUEXCAVATORE320,E320C,E320B; Caterpillar Caterpillar Excavator:318C, 319C, 320C, 320C FM. Compare reference number 178-6539 against the label on your existing Caterpillar component before ordering.

Additional cross references on file: 34335-23010, E320B, E320. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

178-6539 34335-23010 E320BE320E320C3066EXCAVATORS320CFMST 320CFMHWTRACK EXCAVATORS318C320C319CLN 320CL

Applications

Part Number
Cat Caterpillar Excavator E200B Engine 3066 Oil Pump 178-6539
Model: Caterpillar Excavator E320B E320 E320C Engine: 3066 Details: FORESTRY EXCAVATORS320CFMST,320CFMHWTRACK EXCAVATORS318C,320C,319CLN,320CL,320CLU,320CUEXCAVATORE320,E320C,E320B
Caterpillar Caterpillar Excavator:318C, 319C, 320C, 320C FM

Specifications

Part Number	178-6539,1786539,34335-23010

Fitment Notes

Brand or application signal: Caterpillar Engine Spare Parts
Product family: Oil Pump
System category: Engine Spare Parts > Lubrication & Cooling Systems > Oil Pump
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.