How do I confirm pilotpart107743 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

Pump Group Fuel Injection 108-6634 For Caterpillar Engine 3406B 3406C

For Caterpillar Injectors & Nozzle

Injectors & Nozzle 108-6634 for Caterpillar 3406B Engine

Q: What part numbers are associated with this Injectors & Nozzle?

108-6634, 108664, CA1086634, 10R4374, CA10R4374, CA6I2665, 6I-2665, 3406C

OEM / REF: 108-6634SKU: pilotpart107743

Pump Group Fuel Injection 108-6634 For Caterpillar Engine 3406B 3406C is a Injectors & Nozzle replacement part indexed for Caterpillar · 3406B and Caterpillar · 3406C, with 3 application records on file. Match OEM part number 108-6634 and confirm fitment for Caterpillar Engine Spare Parts before ordering.

Stock: In stock
Condition: New
Fitment: Caterpillar Engine Spare Parts
Category: Injectors & Nozzle

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$166.99USD/EA

~~$23,799.00~~Save 99%

Estimated delivery by quantity

Estimated delivery windows
Qty	Estimated delivery
1	Oct 21 – Oct 28
10	Oct 19 – Oct 26
50	Oct 17 – Oct 24

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.

Injectors & Nozzle Description

This Injectors & Nozzle is indexed for Caterpillar · 3406B; Caterpillar · 3406C; Caterpillar s:For Caterpillar CAT Truck Engine:3406B, 3406C. Compare reference number 108-6634 against the label on your existing Caterpillar component before ordering.

Additional cross references on file: 108664, CA1086634, 10R4374. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

108-6634 108664 CA1086634 10R4374 CA10R4374 CA6I2665 6I-2665 3406C

Applications

Caterpillar · 3406B
Caterpillar · 3406C
Caterpillar s:For Caterpillar CAT Truck Engine:3406B, 3406C

Specifications

Length	154.94mm
Width	66.04mm
Height	66.04mm
Part Number	108-6634, 108664

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.