CAT 1B4331 NUT for C18 Caterpillar Part - WSTPARTS
1B4331 NUT is a Bolt/Nut component engineered for Caterpillar C18 and 3608 machines, built to match original factory specifications. It is categorized under Bolt/Nut. Every unit is fitment-verified before dispatch. Manual reference: 3608: SERVICE EQUIPMENT AND SUPPLIES, group 208-9696, page 216; C18: STARTING AND ELECTRICAL SYSTEM, group 298-5136, page 93.
1B4331 NUT for Caterpillar C18 — Genuine CAT & Replacement Part
WSTPARTS supplies genuine CAT and OEM-equivalent direct-replacement NUT (Part # 1B4331). Designed for CAT C18, 3608 equipment.
Compatible Models
Key Features
- ✔ 100% compatible with CAT C18, 3608
- ✔ 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) | 1B4331 |
| Product Name | NUT |
| Brand | CAT |
| Applicable Models | C18, 3608 |
| Weight | 0.09 kg |
| Condition | New (Genuine CAT / OEM-equivalent direct replacement) |
| Warranty | 12 Months |
Where This Part Fits
Every row below is a real listing of 1B4331 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 |
| 3608 | SERVICE EQUIPMENT AND SUPPLIES | 208-9696 | p.216 |
| C18 | STARTING AND ELECTRICAL SYSTEM | 298-5136 | p.93 |
| C18 | STARTING AND ELECTRICAL SYSTEM | 298-4038 | p.94 |
System Notes — SERVICE EQUIPMENT AND SUPPLIES
This group covers the equipment and consumables used to service the machine rather than to run it: filter wrenches and service tools, drain and fill hardware, grease fittings and couplers, sight gauges, sampling valves, and the small hardware that makes routine maintenance possible without improvising. Items here are replaced when they no longer seal, no longer hold a setting, or when a stripped fitting turns a ten-minute service job into a two-hour one. Keeping the correct part number on hand matters more than the unit price, because a missing grease coupler usually means a missed lube point.
FAQ
Is 1B4331 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 C18.
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
