CAT 6V8801 NUT for C18 Caterpillar Part - WSTPARTS

The 6V8801 NUT is a genuine and high-quality OEM replacement part compatible with Caterpillar C18, 3516B and C15 equipment. It is categorized under Bolt/Nut. Every unit is fitment-verified before dispatch. Manual reference: 3126B: COOLING SYSTEM, group 208-3038, page 401; 3306: BASIC ENGINE, group 138-2780, page 172.

6V8801 NUT for Caterpillar C18 — Genuine CAT & Replacement Part

WSTPARTS supplies genuine CAT and OEM-equivalent direct-replacement NUT (Part # 6V8801). Designed for CAT C18, 3516B, C15, 3516C, 3126B, 3306, 3406C, 3406E, 3412C, 3508C, 3512, 3512C, 3516, 3606, 3608, C13, C175, C27, C32, C7, C9, G3508, G3608 equipment.

Compatible Models

Key Features

• ✔ 100% compatible with CAT C18, 3516B, C15, 3516C, 3126B, 3306, 3406C, 3406E, 3412C, 3508C, 3512, 3512C, 3516, 3606, 3608, C13, C175, C27, C32, C7, C9, G3508, G3608
• ✔ 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)	6V8801
Product Name	NUT
Brand	CAT
Applicable Models	C18, 3516B, C15, 3516C, 3126B, 3306, 3406C, 3406E, 3412C, 3508C, 3512, 3512C, 3516, 3606, 3608, C13, C175, C27, C32, C7, C9, G3508, G3608
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 6V8801 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	BASIC ENGINE	138-2780	p.172
3406C	BASIC ENGINE	352-3619	p.295
3406E	BASIC ENGINE	131-8264	p.163
3412C	BASIC ENGINE	154-2978	p.181
3508C	COOLING SYSTEM	116-9870	p.182
3512	COOLING SYSTEM	032-1268	p.405
3512C	COOLING SYSTEM	282-8406	p.164

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 — BASIC ENGINE

The basic engine group covers the core structure and internals: cylinder block, cylinder head, pistons, rings, liners, connecting rods, crankshaft, bearings, camshaft and the gasket sets that seal them. These parts determine compression, oil pressure and power output. They wear gradually — rings lose tension, bearings show copper, liners glaze — and the first signs are usually blow-by from the breather, rising oil consumption, or a knock that gets louder as the engine warms. Replacing a basic engine part is a planned overhaul decision rather than a roadside fix, so matching the exact part number and serial number range matters more here than anywhere else on the machine.

FAQ

Is 6V8801 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