How do I confirm pilotpart420328 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

Engine Water Pump 178-6633 1786633 for Engine 3064 3066 C4.2 C6 C6.4 Caterpillar CAT 311 312D 312C 313D 314 318 318C 320C 320D 323D

For Caterpillar Water Pump

Water Pump 178-6633 for Caterpillar 311

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

178-6633, CA1786633, CA10R7555, 10R-7555, E320C

OEM / REF: 178-6633SKU: pilotpart420328

Engine Water Pump 178-6633 1786633 for Engine 3064 3066 C4.2 C6 C6.4 Caterpillar CAT 311 312D 312C 313D 314 318 318C 320C 320D 323D is a Water Pump replacement part indexed for CAT 311 and CAT 314, with 3 application records on file. Match OEM part number 178-6633 and confirm fitment for Caterpillar Engine Spare Par...

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

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$190.99USD/EA

~~$27,199.00~~Save 99%

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.

Confirm fitment before ordering →

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

Water Pump Description

This Water Pump is indexed for CAT 311; CAT 314; CAT 318; CAT 311C. Compare reference number 178-6633 against the label on your existing Caterpillar component before ordering.

Additional cross references on file: CA1786633, CA10R7555, 10R-7555. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

178-6633 CA1786633 CA10R7555 10R-7555 E320C

Applications

CAT 311
CAT 314
CAT 318
CAT 311C
CAT 311D LRR
CAT 312C
CAT 312C L
CAT 312D
CAT 312D L
CAT 313D
CAT 314C
CAT 314C CR
CAT 314C LCR
CAT 314D CR
CAT 314D LCR
CAT 315D L
CAT 318C
CAT 318D L
CAT 319C
CAT 319D
CAT 319D L
CAT 319D LN
CAT 320C
CAT 320C FM
CAT 320C L
CAT 320D
CAT 320D FM
CAT 320D FM RR
CAT 320D GC
CAT 320D L
CAT 320D LN
CAT 320D LRR
CAT 320D RR
CAT 321C
CAT 321D LCR
CAT 323D
CAT 323D L
CAT 323D LN
CAT 323D SA
CAT E320C
CAT
CAT
CAT
CAT
CAT
CAT
Caterpillar CAT E320C Engine 3066T

Specifications

Gasket	Included
Part Number	178-6633, 1786633, CA1786633, CA10R7555, 10R-7555, 10R7555

Fitment Notes

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