CAT 4N4391 KEY for C18 Caterpillar Part - WSTPARTS
WSTPARTS supplies the 4N4391 KEY, a CAT Structure replacement part designed for Caterpillar C18, C15 and 3306 applications. It is categorized under Structure. 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.
4N4391 KEY for Caterpillar C18 — Genuine & OEM Replacement Part
WSTPARTS supplies genuine and high-quality OEM replacement KEY (Part # 4N4391). Designed for CAT C18, C15, 3306, 3406E, C9 equipment.
Compatible Models
Key Features
- ✔ 100% compatible with CAT C18, C15, 3306, 3406E, C9
- ✔ 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) | 4N4391 |
| Product Name | KEY |
| Brand | CAT |
| Applicable Models | C18, C15, 3306, 3406E, C9 |
| Weight | 0.05 kg |
| Condition | New (Genuine / OEM Equivalent) |
| Warranty | 12 Months |
FAQ
Is 4N4391 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
Parts DiagramC15
