CAT 3E6477 RELAY A for C18 Caterpillar Part - WSTPARTS

3E6477 RELAY A is a Switch/Relay component engineered for Caterpillar C18, 3512 and 3306 machines, built to match original factory specifications. It is categorized under Switch/Relay. Every unit is fitment-verified before dispatch. Manual reference: 3512: ELECTRICAL AND STARTING SYSTEM, group 100-3638, page 811; 3306: ELECTRICAL AND STARTING SYSTEM, group 211-0130, page 998.

3E6477 RELAY A for Caterpillar C18 — Genuine & OEM Replacement Part

WSTPARTS supplies genuine and high-quality OEM replacement RELAY A (Part # 3E6477). Designed for CAT C18, 3512, 3306 equipment.

Compatible Models

Key Features

• ✔ 100% compatible with CAT C18, 3512, 3306
• ✔ Meets Caterpillar original quality and performance standards
• ✔ Genuine CAT parts with anti-counterfeit label | OEM alternatives with warranty
• ✔ Available for order, contact for lead time

Specifications

Part Number (MPN)	3E6477
Product Name	RELAY A
Brand	CAT
Applicable Models	C18, 3512, 3306
Weight	0.05 kg
Condition	New (Genuine / OEM Equivalent)
Warranty	12 Months

Where This Part Fits

Every row below is a real listing of 3E6477 in the Caterpillar parts manual: the machine it is published under, the system it belongs to, the group number and the manual page. Use it to confirm the part against your own parts book before ordering.

Machine	System	Group No.	Manual Page
3512	ELECTRICAL AND STARTING SYSTEM	100-3638	p.811
3306	ELECTRICAL AND STARTING SYSTEM	211-0130	p.998
C18	STARTING AND ELECTRICAL SYSTEM	262-4225	p.90
3512	ELECTRICAL AND STARTING SYSTEM	174-1417	p.815
3306	ELECTRICAL AND STARTING SYSTEM	211-0130	p.1001
3512	ELECTRICAL AND STARTING SYSTEM	174-1417	p.985
3306	ELECTRICAL AND STARTING SYSTEM	211-0130	p.1006
3512	ELECTRICAL AND STARTING SYSTEM	174-1417	p.986

System Notes — ELECTRICAL AND STARTING SYSTEM

The electrical and starting system covers the battery, starter motor, alternator, wiring harness, relays, switches and the instrument panel. It carries current from the batteries to the starter to crank the engine, and from the alternator back to keep the batteries charged. Because these machines work in dust, vibration and wide temperature swings, connectors corrode, harness insulation chafes against the frame, and starter solenoids burn out from repeated short cranks. Parts in this group are usually replaced on a symptom basis — slow cranking, a dash warning, lights that dim under load, or a no-start condition traced to an open circuit.

FAQ

Is 3E6477 the right part for my machine?
Match the part number on your old part, or send us your equipment serial number — WSTPARTS verifies fitment free of charge for CAT C18.

Genuine vs OEM replacement — what is the difference?
Genuine CAT parts carry an anti-counterfeit label. OEM equivalents are built to the same specifications, bench-tested and supplied with full warranty at a better price.

Stock, shipping and warranty?
Lead time confirmed on request; we quote the fastest available option. Every order is covered by a 12-month warranty.

📞 Get a Quote: Contact the WSTPARTS parts team | Email: cat@wstparts.com