CAT 8T4138 BOLT for 345C Caterpillar Part - WSTPARTS
Need a dependable Bolt/Nut part for your Caterpillar 345C, 345B and 365B machine? The 8T4138 BOLT from WSTPARTS is manufactured to OEM-grade tolerances. It is categorized under Bolt/Nut. Every unit is fitment-verified before dispatch. Manual reference: 3056: OPERATOR STATION, group 215-1736, page 373; 330D: FRAME AND BODY, group 278-3810, page 289.
8T4138 BOLT for Caterpillar 345C — Genuine & OEM Replacement Part
WSTPARTS supplies genuine and high-quality OEM replacement BOLT (Part # 8T4138). 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) | 8T4138 |
| 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 8T4138 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 |
| 3056 | OPERATOR STATION | 215-1736 | p.373 |
| 330D | FRAME AND BODY | 278-3810 | p.289 |
| 336D | FRAME AND BODY | 237-8768 | p.285 |
| 3412C | OPERATOR STATION | 223-4642 | p.733 |
| 345B | HYDRAULIC SYSTEM | 128-7457 | p.538 |
| 3516C | GENERATORS | 252-3975 | p.632 |
| C15 | COOLING SYSTEM | 282-2737 | p.183 |
| C175 | ELECTRICAL AND STARTING SYSTEM | 285-3951 | p.385 |
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 — 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 8T4138 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
