How do I confirm pilotpart720726 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

For Caterpillar Air Filter

Air Filter 6I-6434 for Caterpillar 311

OEM / REF: 6I-6434SKU: pilotpart720726

Air Filter 6I-6434 for Caterpillar 311 312 Excavators is a Air Filter replacement part indexed for Caterpillar 311 and Caterpillar 312. Match OEM part number 6I-6434 and confirm fitment for Caterpillar Seals, Filters & Maintenance Parts before ordering.

Stock: In stock
Condition: New
Fitment: Caterpillar Seals, Filters & Maintenance Parts
Category: Air Filter

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$217.99USD/EA

~~$30,999.00~~Save 99%

Estimated delivery by quantity

Estimated delivery windows
Qty	Estimated delivery
1	Nov 7 – Nov 14
10	Nov 5 – Nov 12
50	Nov 3 – Nov 10

Estimates from today; confirm exact lead time before payment.

Quantity

Confirm fitment before ordering →

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

Air Filter Description

This Air Filter is indexed for Caterpillar 311; Caterpillar 312. Compare reference number 6I-6434 against the label on your existing Caterpillar component before ordering.

Before checkout, compare OEM part number 6I-6434, 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

6I-6434

Applications

Caterpillar 311
Caterpillar 312

Specifications

Size	307220/15587/17, 28299/8474/17
Filtration Accuracy	20m
Filtration Efficiency	99.67%
Part Number (CATERPILLAR)	6I-6434
Part Number	CATERPILLAR: 6I-6434

Fitment Notes

Brand or application signal: Caterpillar Seals, Filters & Maintenance Parts
Product family: Air Filter
System category: Seals, Filters & Maintenance Parts > Filters > Air Filter
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.