CAT 1439544 PLATE for 345B Caterpillar Part - WSTPARTS
WSTPARTS supplies the 1439544 PLATE, a CAT Structure replacement part designed for Caterpillar 345B and 365B applications. It is categorized under Structure. Every unit is fitment-verified before dispatch. Manual reference: 345B: IMPLEMENTS, group 140-1489, page 779; 365B: FRAME AND BODY, group 208-1898, page 327.
1439544 PLATE for Caterpillar 345B — Genuine & OEM Replacement Part
WSTPARTS supplies genuine and high-quality OEM replacement PLATE (Part # 1439544). Designed for CAT 345B, 365B equipment.
Compatible Models
Key Features
- ✔ 100% compatible with CAT 345B, 365B
- ✔ 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) | 1439544 |
| Product Name | PLATE |
| Brand | CAT |
| Applicable Models | 345B, 365B |
| Weight | 0.82 kg |
| Condition | New (Genuine / OEM Equivalent) |
| Warranty | 12 Months |
Where This Part Fits
Every row below is a real listing of 1439544 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 |
| 345B | IMPLEMENTS | 140-1489 | p.779 |
| 365B | FRAME AND BODY | 208-1898 | p.327 |
| 345B | IMPLEMENTS | 140-1491 | p.780 |
System Notes — IMPLEMENTS
The implements group covers the working attachment and its linkage: bucket or blade, cutting edges, teeth and adapters, pins and bushings, linkage arms, tilt cylinders and the wear plates that protect them. This is the group that actually does the work, so it wears fastest. Cutting edges round off, teeth break at the adapter, and pins and bushings develop play that spreads shock loads back into the linkage. Parts here are replaced on measured wear — pin and bushing clearance, edge thickness, tooth height — rather than on hours, because a worn edge costs fuel and cycle time long before it fails outright.
System Notes — FRAME AND BODY
The frame and body group covers the main frame, counterweight, fenders, steps, handrails, access doors, panels and the mounting hardware that ties them together. It carries every load the machine generates and every load the attachment imposes back into the structure. Cracks almost always start at a weld toe or a bolt hole where a mounting has worked loose, and a loose guard or step is both a structural and a safety issue. Parts in this group are replaced after impact damage, after crack repair, or when fasteners no longer hold torque because the hole has elongated.
FAQ
Is 1439544 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 345B.
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
