CAT 7X0579 WASHER for C18 Caterpillar Part - WSTPARTS

WSTPARTS supplies the 7X0579 WASHER, a CAT Bolt/Nut replacement part designed for Caterpillar C18, 3306 and C27 applications. It is categorized under Bolt/Nut. Every unit is fitment-verified before dispatch. Manual reference: 3126B: COOLING SYSTEM, group 208-3038, page 400; 3406C: COOLING SYSTEM, group 126-8325, page 559.

7X0579 WASHER for Caterpillar C18 — Genuine & OEM Replacement Part

WSTPARTS supplies genuine and high-quality OEM replacement WASHER (Part # 7X0579). Designed for CAT C18, 3306, C27, 3126B, 3406C, C32, 345D equipment.

Compatible Models

Key Features

• ✔ 100% compatible with CAT C18, 3306, C27, 3126B, 3406C, C32, 345D
• ✔ 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)	7X0579
Product Name	WASHER
Brand	CAT
Applicable Models	C18, 3306, C27, 3126B, 3406C, C32, 345D
Weight	0.05 kg
Condition	New (Genuine / OEM Equivalent)
Warranty	12 Months

Where This Part Fits

Every row below is a real listing of 7X0579 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
3126B	COOLING SYSTEM	208-3038	p.400
3406C	COOLING SYSTEM	126-8325	p.559
3516B	ELECTRICAL AND STARTING SYSTEM	166-4373	p.645
C18	ELECTRICAL AND STARTING SYSTEM	290-4001	p.735
C27	ELECTRICAL AND STARTING SYSTEM	349-5622	p.255
C32	ELECTRICAL AND STARTING SYSTEM	361-7623	p.269
3306	COOLING SYSTEM	133-9673	p.449
3516C	ELECTRICAL AND STARTING SYSTEM	166-4373	p.415

System Notes — COOLING SYSTEM

The cooling system covers the radiator, water pump, thermostat, fan and fan drive, coolant hoses, clamps, the surge tank and the belts that drive it. It holds engine temperature inside the range where clearances and oil film stay correct. Failures are usually slow and then sudden: a hose softens and balloons before it bursts, a water pump seal starts weeping from the weep hole, a thermostat sticks partly open so the engine runs cold and burns more fuel. On construction sites the radiator also packs with dust and debris, which raises pressure across the core and finds the weakest hose or clamp first.

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 7X0579 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