How do I confirm pilotpart152550 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

Relief Valve 6I-6899 For Caterpillar Excavator 320 322 325 330

For Caterpillar Main & Relief Valve

Main & Relief Valve 171-0030 for Caterpillar

OEM / REF: 171-0030SKU: pilotpart152550

Relief Valve 6I-6899 For Caterpillar Excavator 320 322 325 330 is a Main & Relief Valve replacement part indexed for Part Number and Caterpillar Excavator 320 322 325 330 Main Control Valve 6I-6899, with 3 application records on file. Match OEM part number 171-0030 and confirm fitment for Caterpillar Hydraulic & Pne...

Stock: In stock
Condition: New
Fitment: Caterpillar Hydraulic & Pneumatic Parts
Category: Main & Relief Valve

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$159.08USD/EA

~~$29,899.00~~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.

Main & Relief Valve Description

This Main & Relief Valve is indexed for Part Number; Caterpillar Excavator 320 322 325 330 Main Control Valve 6I-6899; Caterpillar Excavator 320, 320 L, 320N, 322, 325, 325 L, 325 LN, 330, 330 FM L, 330 L; Caterpillar Caterpillar Excavator 320, 320 L, 320N, 322, 325, 325 L, 325 LN, 330, 330 FM L, 330 L. Compare reference number 171-0030 against the label on your existing Caterpillar component before ordering.

Additional cross references on file: 320N, 6I-6899. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

171-0030320N6I-6899

Applications

Part Number
Caterpillar Excavator 320 322 325 330 Main Control Valve 6I-6899
Caterpillar Excavator 320, 320 L, 320N, 322, 325, 325 L, 325 LN, 330, 330 FM L, 330 L
Caterpillar Caterpillar Excavator 320, 320 L, 320N, 322, 325, 325 L, 325 LN, 330, 330 FM L, 330 L
Caterpillar 312C,312C L,315C,315C L,318C,318C L,318C LN,319C LN,320B,320B L,320B LN,320B N,320B S,320C,320C L,320C LN,320C S,320C U,321C LCR,322B,322B L,322B LN,322C,322C L,322C LN

Specifications

Part Number	6I-6899, 6I6899

Fitment Notes

Brand or application signal: Caterpillar Hydraulic & Pneumatic Parts
Product family: Main & Relief Valve
System category: Hydraulic & Pneumatic Parts > Hydraulic & Pneumatic Valves > Main & Relief Valve
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.