CAT 8T4134 NUT for 345C Caterpillar Part - WSTPARTS
Need a dependable Bolt/Nut part for your Caterpillar 345C, 330C and 325C machine? The 8T4134 NUT from WSTPARTS is manufactured to OEM-grade tolerances. It is categorized under Bolt/Nut. Every unit is fitment-verified before dispatch. Manual reference: 325C: OPERATOR STATION, group 171-7408, page 887; 325D: OPERATOR STATION, group 234-6594, page 665.
8T4134 NUT for Caterpillar 345C — Genuine CAT & Replacement Part
WSTPARTS supplies genuine CAT and OEM-equivalent direct-replacement NUT (Part # 8T4134). Designed for CAT 345C, 330C, 325C, 325D, 330D, 320C, 320D, 345D equipment.
Compatible Models
Key Features
- ✔ 100% compatible with CAT 345C, 330C, 325C, 325D, 330D, 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) | 8T4134 |
| Product Name | NUT |
| Brand | CAT |
| Applicable Models | 345C, 330C, 325C, 325D, 330D, 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 8T4134 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 | OPERATOR STATION | 171-7408 | p.887 |
| 325D | OPERATOR STATION | 234-6594 | p.665 |
| 330C | OPERATOR STATION | 171-7408 | p.838 |
| 330D | OPERATOR STATION | 234-6594 | p.700 |
| 336D | OPERATOR STATION | 234-6594 | p.715 |
| 3412C | ELECTRICAL AND STARTING SYSTEM | 154-9668 | p.435 |
| 345C | OPERATOR STATION | 234-6594 | p.729 |
| 3512 | ELECTRICAL AND STARTING SYSTEM | 108-5564 | p.819 |
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.
System Notes — ELECTRICAL AND STARTING SYSTEM
The electrical and starting system covers the battery, starter motor, alternator, wiring harness, relays, switches and the instrument panel. It carries current from the batteries to the starter to crank the engine, and from the alternator back to keep the batteries charged. Because these machines work in dust, vibration and wide temperature swings, connectors corrode, harness insulation chafes against the frame, and starter solenoids burn out from repeated short cranks. Parts in this group are usually replaced on a symptom basis — slow cranking, a dash warning, lights that dim under load, or a no-start condition traced to an open circuit.
FAQ
Is 8T4134 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
