In StockRelay 155-7042 for Caterpillar CAT 307C 307D 311B 311C 311DLRR 311FLRR 312CL 320C
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For CaterpillarRelays

Relays CA1557042 for Caterpillar 307C

OEM / REF: CA1557042SKU: pilotpart151913

Relay 155-7042 for Caterpillar CAT 307C 307D 311B 311C 311DLRR 311FLRR 312CL 320C is a Relays replacement part indexed for Caterpillar 307C and Caterpillar 307C SB, with 3 application records on file. Match OEM part number CA1557042 and confirm fitment for Caterpillar Electrical Parts before ordering.

Stock
In stock
Condition
New
Fitment
Caterpillar Electrical Parts
Category
Relays
  • Fitment support before you order
  • Worldwide delivery options

Relays Description

This Relays is indexed for Caterpillar 307C; Caterpillar 307C SB; Caterpillar 307D; Caterpillar 311C U. Compare reference number CA1557042 against the label on your existing Caterpillar component before ordering.

Additional cross references on file: 155-7042, 176810-0050, D519521. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Applications

  • Caterpillar 307C
  • Caterpillar 307C SB
  • Caterpillar 307D
  • Caterpillar 311C U
  • Caterpillar 311D LRR
  • Caterpillar 312C
  • Caterpillar 312C L
  • Caterpillar 312D
  • Caterpillar 312D L
  • Caterpillar 312F
  • Caterpillar 313F
  • Caterpillar 313F L
  • Caterpillar 315C
  • Caterpillar 315C L
  • Caterpillar 315D L
  • Caterpillar 315F L
  • Caterpillar 316F L
  • Caterpillar 318B L
  • Caterpillar 318B LN
  • Caterpillar 318C L
  • Caterpillar 318C LN
  • Caterpillar 318F L
  • Caterpillar 319D L
  • Caterpillar 319D LN
  • Caterpillar 320B
  • Caterpillar 320B L
  • Caterpillar 320C
  • Caterpillar 320C L
  • Caterpillar 320C LRR
  • Caterpillar 320C LU
  • Caterpillar 320C U
  • Caterpillar 320D
  • Caterpillar 320D FM
  • Caterpillar 320D L
  • Caterpillar 320D LRR
  • Caterpillar 320D RR
  • Caterpillar 320D2 GC
  • Caterpillar 320E L
  • Caterpillar 320F L
  • Caterpillar 322C
  • Caterpillar 322C FM LGP
  • Caterpillar 322C L
  • Caterpillar 323D2 L
  • Caterpillar 323F L
  • Caterpillar 323F LN
  • Caterpillar 323F SA
  • Caterpillar 324D
  • Caterpillar 324D L
  • Caterpillar 325C
  • Caterpillar 325C L
  • Caterpillar 325D
  • Caterpillar 325D L
  • Caterpillar 325F L
  • Caterpillar 326D2 L
  • Caterpillar 326F L
  • Caterpillar 330C
  • Caterpillar 330C L
  • Caterpillar 330D
  • Caterpillar 330D L
  • Caterpillar 330D2 L
  • Caterpillar 330F L
  • Caterpillar 335F L
  • Caterpillar 336D2 L
  • Caterpillar 336F
  • Caterpillar 336F L
  • Caterpillar 336F LXE
  • Caterpillar 336F XE
  • Caterpillar 345B
  • Caterpillar 345B L
  • Caterpillar 345C
  • Caterpillar 345C HCR
  • Caterpillar 345C L
  • Caterpillar 345C LC
  • Caterpillar 345D
  • Caterpillar 345D L
  • Caterpillar 349D2
  • Caterpillar 349D2 L
  • Caterpillar 349F
  • Caterpillar 349F L
  • Caterpillar 352F
  • Caterpillar 365B
  • Caterpillar 365B L
  • Caterpillar 385B
  • Caterpillar 385B L
  • Caterpillar MH3049
  • Caterpillar MH3059
  • Caterpillar W345C
  • Caterpillar
  • Caterpillar
  • Caterpillar
  • Caterpillar
  • Caterpillar
  • Caterpillar
  • Caterpillar
  • Caterpillar
  • Caterpillar
  • Caterpillar
  • Caterpillar
  • Caterpillar
  • Caterpillar
  • Caterpillar
  • Caterpillar
  • Caterpillar
  • Caterpillar
  • Caterpillar
  • Caterpillar
  • Mitsubishi
  • Caterpillar EXCAVATOR 311B 311C 311D LRR 311F LRR 312C L 312D 312D L 312D2 312D2 GC 312D2 L 312E 312E L 313D 313D2 313D2 LGP 315C 315D L 316E L 318B 318C 318D L 318D2 L 318E L 319D L 319D LN 320B 320C 320C FM 320C L 320D 320D FM 320D GC 320D L 320D LN 320D LRR 320D RR 320D2 320D2 GC 320D2 L 320E 320E L 320E LN 320E LRR 320E RR 322C 322C FM 323D L 323D LN 323D SA 323D2 L 323E L 324D 324D L 324E 324E L 324E LN 325B 325C 325C FM 325D 325D L 325D MH 326D L 328D LCR 329D 329D L 329D LN 329E 329E L 330C FM 330C L 330C MH 330D 330D L 330D MH 336D 336D L 336D LN 336D2 336D2 L 336E 336E H 336E L 336E LH 336E LN 336F L 340D L 340D2 L 345B II 345C 345C L 345C MH 345D 345D L 345D L VG 349D 349D L 349E 349E L 349E L VG 349F L 365B 365B L 385B LOGGER 322C MATERIAL HANDLER MH3049 MH3059 MINI HYD EXCAVATOR 307C 307D MOBILE HYD POWER UNIT 323D L 325D 325D L 329D L 330C 330D 330D L 336D L 349D L WHEELED EXCAVATOR W345C MH
  • Caterpillar s: Caterpillar CAT Excavator:320B, 320C, 320D Denso Excavator:D519521
  • Caterpillar s: Caterpillar CAT Excavator: 307C & 307C SB, 307D, 311C U, 311C U, 311D LRR, 311D LRR, 312C & 312C L, 312C & 312C L, 312D & 312D L, 312F, 313F & 313F L, 313F L, 315C & 315C L, 315C & 315C L, 315D L, 315D L, 315F L, 316F L, 316F L, 316F L, 318B L & 318B LN, 318C L & 318C LN, 318F L, 318F L, 319D L & 319D LN, 320B & 320B L, 320C & 320C L, 320C & 320C L, 320C & 320C L, 320C & 320C L, 320C & 320C L, 320C & 320C L, 320C, 320C, 320C, 320C L, 320C LRR, 320C U & 320C LU, 320C U 320C LU, 320D & 320D L, 320D & 320D L, 320D & 320D L, 320D & 320D L, 320D & 320D L, 320D & 320D L, 320D FM, 320D L, 320D LRR, 320D LRR, 320D LRR, 320D RR & 320D LRR, 320D RR, 320D2 GC, 320E L, 320F L, 322C & 322C L, 322C & 322C L, 322C, 322C, 322C, 322C L, 322C L, 323D2 L, 323F L, 323F LN, 323F LN, 323F LN, 323F LN 323F SA, 323F SA, 324D & 324D L, 324D L, 325C & 325C L, 325C & 325C L, 325C, 325C L, 325C, 325D & 325D L, 325D & 325D L, 325D L, 325D L, 325D L, 325D, 325F L, 326D2 L, 326D2 L, 326D2 L, 326F L, 326F L, 330C & 330C L, 330C & 330C L, 330C, 330C, 330C, 330C, 330C, 330C L, 330C L, 330D & 330D L, 330D & 330D L, 330D, 330D L, 330D L, 330D L, 330D L, 330D L, 330D, 330D2 L, 330D2 L, 330D2 L 330F L, 330F L, 330F L, 335F L, 336D2 L, 336D2 L, 336D2 L, 336D2 L, 336F & 336F L, 336F XE & 336F LXE, 345B & 345B L, 345B, 345C & 345C L, 345C, 345C, 345C HCR, 345C L, 345C L, 345C LC, 345D, 345D L, 345D L, 345D L, 345D L, 349D2 L, 349D2 L, 349D2, 349F & 349F L, 352F, 352F, 365B L, 365B, 385B & 385B L, 322C FM LGP, MH3049, MH3059, W345C

Specifications

Part Number (Caterpillar)CA1557042, 155-7042, 1557042, 176810-0050, 1768100050
Part Number (Denso)D519521
Part NumberCaterpillar: CA1557042, 155-7042, 1557042, 176810-0050, 1768100050 Denso: D519521

Fitment Notes

Brand or application signal
Caterpillar Electrical Parts
Product family
Relays
System category
Electrical Parts > Circuit Protection & Regulation > Relays
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

Send machine details before ordering high-risk parts.