CAT 1C1976 WASHER for 3306 Caterpillar Part - WSTPARTS

1C1976 WASHER is a Bolt/Nut component engineered for Caterpillar 3306 and 3406C machines, built to match original factory specifications. It is categorized under Bolt/Nut. Every unit is fitment-verified before dispatch. Manual reference: 3126B: COOLING SYSTEM, group 208-3038, page 401; 3306: COOLING SYSTEM, group 133-9673, page 447.

1C1976 WASHER for Caterpillar 3306 — Genuine & OEM Replacement Part

WSTPARTS supplies genuine and high-quality OEM replacement WASHER (Part # 1C1976). Designed for CAT 3306, 3406C equipment.

Compatible Models

Key Features

• ✔ 100% compatible with CAT 3306, 3406C
• ✔ 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)	1C1976
Product Name	WASHER
Brand	CAT
Applicable Models	3306, 3406C
Weight	0.05 kg
Condition	New (Genuine / OEM Equivalent)
Warranty	12 Months

Where This Part Fits

Every row below is a real listing of 1C1976 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	COOLING SYSTEM	133-9673	p.447
3406C	COOLING SYSTEM	135-4926	p.545
3306	COOLING SYSTEM	133-9673	p.449
3406C	COOLING SYSTEM	135-4926	p.547
3306	COOLING SYSTEM	133-9671	p.469
3406C	COOLING SYSTEM	135-4926	p.549

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.

FAQ

Is 1C1976 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 3306.

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