In StockRelief Valve 527-1721 for Caterpillar CAT Engine C7.1 C4.4 C9.3B C9.3 Excavator 323 323 330 340 320GC 336GC 330GC Handler MH3050 MH3250 MH3032 MH3040
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For CaterpillarMain & Relief Valve

Main & Relief Valve CA5271721 for Caterpillar

OEM / REF: CA5271721SKU: pilotpart986387-8986720567544

Relief Valve 527-1721 for Caterpillar CAT Engine C7.1 C4.4 C9.3B C9.3 Excavator 323 323 330 340 320GC 336GC 330GC Handler MH3050 MH3250 MH3032 MH3040 is a Main & Relief Valve replacement part for Caterpillar Hydraulic & Pneumatic Parts, categorized under Hydraulic & Pneumatic Parts > Main & Relief Valve. Use OEM par...

Stock
In stock
Condition
New
Fitment
Caterpillar Hydraulic & Pneumatic Parts
  • Fitment support before you order
  • Worldwide delivery options

Main & Relief Valve Description

This Main & Relief Valve is indexed for Caterpillar s: Fit For Caterpillar Forestry Product: 548, 538, 558 Fit For Caterpillar Excavator: 323, 320, 323, 326, 326 GC, FM558 OTHER, 330, 336, 336 MHPU, 340, 320 DL, 320 GC, 335, 336 GC, 330 GC, MH3040, FM538, FM568, FM548 Fit For Caterpillar Material Handler: MH3050, MH3250, MH3032, MH3040. Compare reference number CA5271721 against the label on your existing Caterpillar component before ordering.

Additional cross references on file: 527-1721, MH3040, FM538. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Applications

  • Caterpillar s: Fit For Caterpillar Forestry Product: 548, 538, 558 Fit For Caterpillar Excavator: 323, 320, 323, 326, 326 GC, FM558 OTHER, 330, 336, 336 MHPU, 340, 320 DL, 320 GC, 335, 336 GC, 330 GC, MH3040, FM538, FM568, FM548 Fit For Caterpillar Material Handler: MH3050, MH3250, MH3032, MH3040

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.

Confirm fitment & quote details

Send machine details and nameplate photos before ordering high-risk or quote-only parts.