CAT 8T4779 BOLT for 345C Caterpillar Part - WSTPARTS
The 8T4779 BOLT is a genuine and high-quality OEM replacement part compatible with Caterpillar 345C, 345B and 365B equipment. It is categorized under Bolt/Nut. Every unit is fitment-verified before dispatch. Manual reference: 330D: COOLING SYSTEM, group 230-2899, page 87; 345B: IMPLEMENTS, group 167-9846, page 787.
8T4779 BOLT for Caterpillar 345C — Genuine CAT & Replacement Part
WSTPARTS supplies genuine CAT and OEM-equivalent direct-replacement BOLT (Part # 8T4779). Designed for CAT 345C, 345B, 365B, 325D, 330C, 330D, 320D, 345D equipment.
Compatible Models
Key Features
- ✔ 100% compatible with CAT 345C, 345B, 365B, 325D, 330C, 330D, 320D, 345D
- ✔ 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) | 8T4779 |
| Product Name | BOLT |
| Brand | CAT |
| Applicable Models | 345C, 345B, 365B, 325D, 330C, 330D, 320D, 345D |
| Weight | 0.09 kg |
| Condition | New (Genuine CAT / OEM-equivalent direct replacement) |
| Warranty | 12 Months |
Where This Part Fits
Every row below is a real listing of 8T4779 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 |
| 330D | COOLING SYSTEM | 230-2899 | p.87 |
| 336D | COOLING SYSTEM | 230-2899 | p.91 |
| 345B | IMPLEMENTS | 167-9846 | p.787 |
| 365B | OPERATOR STATION | 144-9668 | p.594 |
| C9 | FUEL SYSTEM | 255-3332 | p.139 |
| 325D | OPERATOR STATION | 235-8910 | p.652 |
| 330C | IMPLEMENTS | 192-8319 | p.915 |
| 345C | COOLING SYSTEM | 210-8162 | p.96 |
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 — 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.
FAQ
Is 8T4779 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 345C.
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
