CAT 8T4177 BOLT for 345C Caterpillar Part - WSTPARTS
Need a dependable Bolt/Nut part for your Caterpillar 345C, 345B and 365B machine? The 8T4177 BOLT from WSTPARTS is manufactured to OEM-grade tolerances. It is categorized under Bolt/Nut. Every unit is fitment-verified before dispatch. Manual reference: 325C: COOLING SYSTEM, group 135-5803, page 107; 330C: COOLING SYSTEM, group 193-2705, page 121.
8T4177 BOLT for Caterpillar 345C — Genuine & OEM Replacement Part
WSTPARTS supplies genuine and high-quality OEM replacement BOLT (Part # 8T4177). Designed for CAT 345C, 345B, 365B, 325C, 325D, 330C, 330D, 320C, 320D, 345D equipment.
Compatible Models
Key Features
- ✔ 100% compatible with CAT 345C, 345B, 365B, 325C, 325D, 330C, 330D, 320C, 320D, 345D
- ✔ 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) | 8T4177 |
| Product Name | BOLT |
| Brand | CAT |
| Applicable Models | 345C, 345B, 365B, 325C, 325D, 330C, 330D, 320C, 320D, 345D |
| Weight | 0.05 kg |
| Condition | New (Genuine / OEM Equivalent) |
| Warranty | 12 Months |
Where This Part Fits
Every row below is a real listing of 8T4177 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 |
| 325C | COOLING SYSTEM | 135-5803 | p.107 |
| 330C | COOLING SYSTEM | 193-2705 | p.121 |
| 330D | HYDRAULIC SYSTEM | 255-2081 | p.531 |
| 336D | UNDERCARRIAGE | 255-2080 | p.454 |
| 345B | OPERATOR STATION | 124-1689 | p.715 |
| 365B | ELECTRICAL AND STARTING SYSTEM | 145-0541 | p.258 |
| 325D | HYDRAULIC SYSTEM | 255-1801 | p.502 |
| 345C | HYDRAULIC SYSTEM | 227-0452 | p.540 |
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 — HYDRAULIC SYSTEM
The hydraulic system covers the main pump, control valves, cylinders, hydraulic tank, filters, hoses and all the fittings that connect them. It converts engine power into the pressure and flow that drive boom, bucket, steering and travel functions. Hydraulic parts fail mainly through contamination and heat: dirt that passes a worn breather scores pump components, aged hoses crack at the crimp, and O-rings harden and weep under pressure. A part in this group is normally replaced when a function drifts, a cylinder creeps, oil shows up under a machine that used to be dry, or the filter comes out loaded with metal.
FAQ
Is 8T4177 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 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
