CAT 8T1159 BOLT for 345C Caterpillar Part - WSTPARTS
The 8T1159 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: 3126B: LUBRICATION SYSTEM, group 173-3257, page 356; 325C: FRAME AND BODY, group 194-1185, page 454.
8T1159 BOLT for Caterpillar 345C — Genuine CAT & Replacement Part
WSTPARTS supplies genuine CAT and OEM-equivalent direct-replacement BOLT (Part # 8T1159). Designed for CAT 345C, 345B, 365B, 3126B, 325C, 325D, 330C, 330D, 320C, 320D, 345D equipment.
Compatible Models
Key Features
- ✔ 100% compatible with CAT 345C, 345B, 365B, 3126B, 325C, 325D, 330C, 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) | 8T1159 |
| Product Name | BOLT |
| Brand | CAT |
| Applicable Models | 345C, 345B, 365B, 3126B, 325C, 325D, 330C, 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 8T1159 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 |
| 3126B | LUBRICATION SYSTEM | 173-3257 | p.356 |
| 325C | FRAME AND BODY | 194-1185 | p.454 |
| 325D | FUEL SYSTEM | 191-0461 | p.108 |
| 330C | FRAME AND BODY | 194-1184 | p.439 |
| 330D | FRAME AND BODY | 194-1184 | p.381 |
| 336D | UNDERCARRIAGE | 176-4853 | p.328 |
| 345B | FUEL SYSTEM | 116-5428 | p.121 |
| 345C | FUEL SYSTEM | 227-5723 | p.114 |
System Notes — LUBRICATION SYSTEM
The lubrication system covers the oil pump, oil cooler, oil filter base, relief valves, dipstick tube, pan and the galleries that distribute oil to every bearing in the engine. It is the system that keeps metal off metal. Failures tend to be either pressure loss — a worn pump, a stuck relief valve, a collapsed filter — or contamination, where sludge and debris circulate and score bearing surfaces. Oil pressure that reads low at idle, a filter that comes out heavy, or oil that turns dark far sooner than usual are the signals. Parts in this group are replaced on measured oil pressure and lab results rather than on interval alone.
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 8T1159 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
