CAT 7X0447 NUT for C18 Caterpillar Part - WSTPARTS

WSTPARTS supplies the 7X0447 NUT, a CAT Bolt/Nut replacement part designed for Caterpillar C18, C15 and 3306 applications. It is categorized under Bolt/Nut. Every unit is fitment-verified before dispatch. Manual reference: 3126B: COOLING SYSTEM, group 208-3038, page 401; 3306: ELECTRICAL AND STARTING SYSTEM, group 100-5047, page 912.

7X0447 NUT for Caterpillar C18 — Genuine CAT & Replacement Part

WSTPARTS supplies genuine CAT and OEM-equivalent direct-replacement NUT (Part # 7X0447). Designed for CAT C18, C15, 3306, 3126B, 3406C, C13, G3508 equipment.

Compatible Models

Key Features

• ✔ 100% compatible with CAT C18, C15, 3306, 3126B, 3406C, C13, G3508
• ✔ Meets Caterpillar original quality and performance standards
• ✔ Genuine CAT lines: New Genuine / Cat Reman / Cat Classic | OEM-equivalent direct replacements
• ✔ Available for order, contact for lead time

Specifications

Part Number (MPN)	7X0447
Product Name	NUT
Brand	CAT
Applicable Models	C18, C15, 3306, 3126B, 3406C, C13, G3508
Weight	0.05 kg
Condition	New (Genuine CAT / OEM-equivalent direct replacement)
Warranty	12 Months

Where This Part Fits

Every row below is a real listing of 7X0447 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.401
3306	ELECTRICAL AND STARTING SYSTEM	100-5047	p.912
3406C	COOLING SYSTEM	126-8325	p.559
C13	LUBRICATION SYSTEM	291-5530	p.365
C15	COOLING SYSTEM	228-4380	p.604
C18	COOLING SYSTEM	228-4380	p.350
G3508	ELECTRICAL AND STARTING SYSTEM	107-6319	p.439
3126B	ELECTRICAL AND STARTING SYSTEM	100-5047	p.491

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 7X0447 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 CAT vs direct replacement — what is the difference?
Genuine CAT covers three factory lines: New Genuine, Cat Reman (core exchange with core charge) and Cat Classic (brand-new economy line). OEM-equivalent direct replacements are non-CAT parts; grade and warranty are confirmed in the quotation.

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

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