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Part Number
7W3780
PULLEY
Category: — | Fits: 3126B
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Fits Equipment Models (1)
3126B

CAT 7W3780 PULLEY fits Caterpillar 3126B. Available for order at WSTPARTS.

Replaceable OEM Parts (Compatible Models)
No OEM replacement record. Contact us
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CAT 7W3780 PULLEY for 3126B Caterpillar Part - WSTPARTS

The 7W3780 PULLEY is a genuine and high-quality OEM replacement part compatible with Caterpillar 3126B equipment. It is categorized under Belt. Every unit is fitment-verified before dispatch, backed by factory-direct pricing and warranty coverage. Contact our parts team with your machine serial number for a fast quotation.

7W3780 PULLEY for Caterpillar 3126B — Genuine & OEM Replacement Part

WSTPARTS supplies genuine and high-quality OEM replacement PULLEY (Part # 7W3780). Designed for CAT 3126B equipment.

Compatible Models

Key Features

  • ✔ 100% compatible with CAT 3126B
  • ✔ 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)7W3780
Product NamePULLEY
BrandCAT
Applicable Models3126B
Weight0.5 kg
ConditionNew (Genuine / OEM Equivalent)
Warranty12 Months

FAQ

Is 7W3780 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 3126B.

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

Frequently Asked Questions
What equipment does 7W3780 fit?
CAT 7W3780 PULLEY fits 1 Caterpillar equipment model including 3126B, verified against Caterpillar parts manuals and confirmed orders.
Is 7W3780 a genuine CAT part?
WSTPARTS supplies genuine CAT parts as well as quality-tested aftermarket alternatives. Contact our sales team for current availability and options for 7W3780.
How can I order 7W3780?
Add 7W3780 to the inquiry cart or contact us with your equipment model and serial number. We ship worldwide and support part number verification.

Parts Diagram

100%
3126B · COOLING SYSTEM · 117-3433 CAT parts diagram
Scroll to zoom · Drag to pan
Sel 0
14P-3681HOUSING-PUMP
24W-0250SHAFT AS
37W-3780PULLEY
44W-7592GASKETIn stock
56V-3918BOLT (M8X1.25X50MM)
69M-1974WASHER-HARD (8.8X16X2MM THK)
79S-8005PLUGIn stock
83K-0360SEAL-O-RINGIn stock
Quality Guarantee
Warranty Period 12 months / under normal use
After-sales Response Response within 24h, solution within 48h
Return Policy Return or exchange within 7 days of receipt (original packaging required)
Quality Inspection 100% inspected before shipment; inspection report on request
Technical Support Free installation guidance; engineer support online
📦 Packaging
Packing Method Genuine or neutral packaging available
Protective Packing Shock-proof & moisture-proof materials
Part Number Label Individual part number label
Customization Custom carton marking supported
After-Sales Service Process
01
Contact Us
Describe issue / send photos
02
Engineer Review
Solution within 24h
03
Confirm Solution
Return, repair or replacement
04
Case Closed
Send-back / re-ship / refund
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