Main & Relief Valve 103-8177 for Caterpillar

OEM / REF: 103-8177SKU: pilotpart323476

Main Relief Valve 103-8177 for Caterpillar Excavator CAT 318C 319C 320C 20D 321C 22C 324D 325C 325D 329D 330C 330D 336D M330D is a Main & Relief Valve replacement part indexed for Part Number and Caterpillar Excavator 318C, 319C, 320C, 320C FM, 320C L, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR, 3...

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 Part Number; Caterpillar Excavator 318C, 319C, 320C, 320C FM, 320C L, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 320D2, 320D2 GC, 320D2 L, 321C, 321D LCR, 322C, 322C FM, 323D L, 323D LN, 323D SA, 323D2 L, 324D, 324D FM, 324D FM LL, 324D L, 324D LN, 325C, 325C FM, 325D, 325D FM, 325D FM LL, 325D L, 325D MH, 326D L, 328D LCR, 329D, 329D L, 329D LN, 330C, 330C FM, 330C L, 330C MH, 330D, 330D FM, 330D L, 330D LN, 330D MH, 336D, 336D L, 336D LN, 336D2, 336D2 L, 340D L, 340D2 L, M325C MH, M325D L MH, M325D MH, M330D See Details: 318C Excavators BTG00001-UP (MACHINE) POWERED BY 3066 Engine 318C L &318C LN Excavators GPA00001-UP (MACHINE) POWERED BY 3066 Engine 319C LN Hydraulic Excavator KGL00001-UP (MACHINE) POWERED BY 3066 Engine 320C &320C L Excavators AMC00001-UP (MACHINE) POWERED BY 3066 Engine 320C &320C L Excavators BDC00001-UP (MACHINE) POWERED BY 3066 Engine 320C &320C L Excavators BPR00001-UP (MACHINE) POWERED BY 3066 Engine 320C &320C L Excavators GNG00001-UP (MACHINE) POWERED BY 3066 Engine 320C &320C L Excavators MAB00001-UP (MACHINE) POWERED BY 3066 Engine 320C &320C L Excavators RAW00001-UP (MACHINE) POWERED BY 3066 Engine 320C Excavators HBC00001-UP (MACHINE) POWERED BY 3066 Engine 320C Forest Machines SAH00001-UP (MACHINE) POWERED BY 3066 Engine 320C Forest Swing Machine BGB00001-UP (MACHINE) POWERED BY 3066 Engine 320C Hydraulic Material Handler EGA00001-UP (MACHINE) POWERED BY 3066 Engine 320C LN Excavator AXK00001-UP (MACHINE) POWERED BY 3066 Engine 320C LRR Excavator GAD00001-UP (MACHINE) POWERED BY 3066 Engine 320C Material Handler JPL00001-UP (MACHINE) POWERED BY 3066 Engine 320C S Hydraulic Excavator BMZ00001-UP (MACHINE) POWERED BY 3066 Engine 320C S Hydraulic Excavator EGL00001-UP (MACHINE) POWERED BY 3066 Engine 320C U &320C LU Excavators MAC00001-UP (MACHINE) POWERED BY 3066 Engine 320C U 320C LU Excavators CLM00001-UP (MACHINE) POWERED BY 3066 Engine 320C, 320C L, 320C LN Excavators DBG00001-UP (MACHINE) POWERED BY 3066 Engine 320C, 320C L, 320C LN, 320C S Excavators BBL00001-UP (MACHINE) POWERED BY 3066 Engine 321C LCR Hydraulic Excavator MCF00001-UP (MACHINE) POWERED BY 3066 Engine 322C &322C L Excavators BKM00001-UP (MACHINE) POWERED BY 3126 Engine 322C &322C L Excavators DAA00001-UP (MACHINE) POWERED BY 3126 Engine 322C &322C LN EXCAVATORS BFK00001-UP (MACHINE) POWERED BY 3126 Engine 322C Forest Swing Machine M2H00001-UP (MACHINE) POWERED BY 3126B Engine 322C FOREST SWING MACHINES BPH00001-UP (MACHINE) POWERED BY 3126 Engine 322C Forest Swing Machines C3R00001-UP (MACHINE) POWERED BY 3126B Engine 322C L Excavator BKJ00001-UP (MACHINE) POWERED BY 3126 Engine 322C L Hydraulic Excavator HEK00001-UP (MACHINE) POWERED BY 3126B Engine 322C L, 322C LN Hydraulic Excavators EMR00001-UP (MACHINE) POWERED BY 3126 Engine 323D &323D L Excavator SDC00001-UP (MACHINE) POWERED BY 3066 Engine 324D &324D L Excavators CJX00001-UP (MACHINE) POWERED BY C7 Engine Custom Support Literature for the 322C FM LGP BYL00001-UP (MACHINE) CUSTOM SUPPORT LITERATURE FOR THE 324D FM LGP JGK00001-UP (MACHINE). Compare reference number 103-8177 against the label on your existing Caterpillar component before ordering.

Additional cross references on file: CA1038177. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Applications

  • Part Number
  • Caterpillar Excavator 318C, 319C, 320C, 320C FM, 320C L, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 320D2, 320D2 GC, 320D2 L, 321C, 321D LCR, 322C, 322C FM, 323D L, 323D LN, 323D SA, 323D2 L, 324D, 324D FM, 324D FM LL, 324D L, 324D LN, 325C, 325C FM, 325D, 325D FM, 325D FM LL, 325D L, 325D MH, 326D L, 328D LCR, 329D, 329D L, 329D LN, 330C, 330C FM, 330C L, 330C MH, 330D, 330D FM, 330D L, 330D LN, 330D MH, 336D, 336D L, 336D LN, 336D2, 336D2 L, 340D L, 340D2 L, M325C MH, M325D L MH, M325D MH, M330D See Details: 318C Excavators BTG00001-UP (MACHINE) POWERED BY 3066 Engine 318C L &318C LN Excavators GPA00001-UP (MACHINE) POWERED BY 3066 Engine 319C LN Hydraulic Excavator KGL00001-UP (MACHINE) POWERED BY 3066 Engine 320C &320C L Excavators AMC00001-UP (MACHINE) POWERED BY 3066 Engine 320C &320C L Excavators BDC00001-UP (MACHINE) POWERED BY 3066 Engine 320C &320C L Excavators BPR00001-UP (MACHINE) POWERED BY 3066 Engine 320C &320C L Excavators GNG00001-UP (MACHINE) POWERED BY 3066 Engine 320C &320C L Excavators MAB00001-UP (MACHINE) POWERED BY 3066 Engine 320C &320C L Excavators RAW00001-UP (MACHINE) POWERED BY 3066 Engine 320C Excavators HBC00001-UP (MACHINE) POWERED BY 3066 Engine 320C Forest Machines SAH00001-UP (MACHINE) POWERED BY 3066 Engine 320C Forest Swing Machine BGB00001-UP (MACHINE) POWERED BY 3066 Engine 320C Hydraulic Material Handler EGA00001-UP (MACHINE) POWERED BY 3066 Engine 320C LN Excavator AXK00001-UP (MACHINE) POWERED BY 3066 Engine 320C LRR Excavator GAD00001-UP (MACHINE) POWERED BY 3066 Engine 320C Material Handler JPL00001-UP (MACHINE) POWERED BY 3066 Engine 320C S Hydraulic Excavator BMZ00001-UP (MACHINE) POWERED BY 3066 Engine 320C S Hydraulic Excavator EGL00001-UP (MACHINE) POWERED BY 3066 Engine 320C U &320C LU Excavators MAC00001-UP (MACHINE) POWERED BY 3066 Engine 320C U 320C LU Excavators CLM00001-UP (MACHINE) POWERED BY 3066 Engine 320C, 320C L, 320C LN Excavators DBG00001-UP (MACHINE) POWERED BY 3066 Engine 320C, 320C L, 320C LN, 320C S Excavators BBL00001-UP (MACHINE) POWERED BY 3066 Engine 321C LCR Hydraulic Excavator MCF00001-UP (MACHINE) POWERED BY 3066 Engine 322C &322C L Excavators BKM00001-UP (MACHINE) POWERED BY 3126 Engine 322C &322C L Excavators DAA00001-UP (MACHINE) POWERED BY 3126 Engine 322C &322C LN EXCAVATORS BFK00001-UP (MACHINE) POWERED BY 3126 Engine 322C Forest Swing Machine M2H00001-UP (MACHINE) POWERED BY 3126B Engine 322C FOREST SWING MACHINES BPH00001-UP (MACHINE) POWERED BY 3126 Engine 322C Forest Swing Machines C3R00001-UP (MACHINE) POWERED BY 3126B Engine 322C L Excavator BKJ00001-UP (MACHINE) POWERED BY 3126 Engine 322C L Hydraulic Excavator HEK00001-UP (MACHINE) POWERED BY 3126B Engine 322C L, 322C LN Hydraulic Excavators EMR00001-UP (MACHINE) POWERED BY 3126 Engine 323D &323D L Excavator SDC00001-UP (MACHINE) POWERED BY 3066 Engine 324D &324D L Excavators CJX00001-UP (MACHINE) POWERED BY C7 Engine Custom Support Literature for the 322C FM LGP BYL00001-UP (MACHINE) CUSTOM SUPPORT LITERATURE FOR THE 324D FM LGP JGK00001-UP (MACHINE)

Specifications

Part Number103-8177, 1038177, CA1038177

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.