CAT 8T3647 BOLT for 330C Caterpillar Part - WSTPARTS
8T3647 BOLT is a Bolt/Nut component engineered for Caterpillar 330C, 325C and 330D machines, built to match original factory specifications. It is categorized under Bolt/Nut. Every unit is fitment-verified before dispatch. Manual reference: 325C: COOLING SYSTEM, group 135-5803, page 106; 325D: OPERATOR STATION, group 212-8518, page 745.
8T3647 BOLT for Caterpillar 330C — Genuine CAT & Replacement Part
WSTPARTS supplies genuine CAT and OEM-equivalent direct-replacement BOLT (Part # 8T3647). Designed for CAT 330C, 325C, 330D, 325D, 320C, 320D, 345D equipment.
Compatible Models
Key Features
- ✔ 100% compatible with CAT 330C, 325C, 330D, 325D, 320C, 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) | 8T3647 |
| Product Name | BOLT |
| Brand | CAT |
| Applicable Models | 330C, 325C, 330D, 325D, 320C, 320D, 345D |
| Weight | 0.05 kg |
| Condition | New (Genuine CAT / OEM-equivalent direct replacement) |
| Warranty | 12 Months |
Where This Part Fits
Every row below is a real listing of 8T3647 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.106 |
| 325D | OPERATOR STATION | 212-8518 | p.745 |
| 330C | OPERATOR STATION | 183-8088 | p.899 |
| 330D | OPERATOR STATION | 183-8088 | p.784 |
| 336D | OPERATOR STATION | 276-3814 | p.645 |
| C7 | BASIC ENGINE | 276-3815 | p.152 |
| 325C | OPERATOR STATION | 212-8518 | p.961 |
| 330D | OPERATOR STATION | 276-3814 | p.767 |
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 — OPERATOR STATION
The operator station covers the cab structure, seat and suspension, glass, wipers, door hardware, pedals, joysticks, armrests, HVAC ducting and the interior trim. It is the group that decides how tolerable a ten-hour shift feels. Wear here is driven by daily entry and exit, sun exposure and dust: seat suspensions sag, door struts lose charge, wiper linkages seize, and rubber seals harden until the cab leaks in rain. Parts in this group are replaced when a control feels vague, a latch no longer holds, or the cab no longer keeps dust and water out — small items, but the ones operators complain about first.
FAQ
Is 8T3647 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 330C.
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
