CAT 1P0043 NUT for 3616 Caterpillar Part - WSTPARTS
WSTPARTS supplies the 1P0043 NUT, a CAT Bolt/Nut replacement part designed for Caterpillar 3616, 3608 and 3606 applications. It is categorized under Bolt/Nut. Every unit is fitment-verified before dispatch. Manual reference: 3606: LUBRICATION SYSTEM, group 009-4440, page 83; 3616: LUBRICATION SYSTEM, group 133-9637, page 92.
1P0043 NUT for Caterpillar 3616 — Genuine & OEM Replacement Part
WSTPARTS supplies genuine and high-quality OEM replacement NUT (Part # 1P0043). Designed for CAT 3616, 3608, 3606 equipment.
Compatible Models
Key Features
- ✔ 100% compatible with CAT 3616, 3608, 3606
- ✔ 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) | 1P0043 |
| Product Name | NUT |
| Brand | CAT |
| Applicable Models | 3616, 3608, 3606 |
| Weight | 0.09 kg |
| Condition | New (Genuine / OEM Equivalent) |
| Warranty | 12 Months |
Where This Part Fits
Every row below is a real listing of 1P0043 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 |
| 3606 | LUBRICATION SYSTEM | 009-4440 | p.83 |
| 3608 | LUBRICATION SYSTEM | 009-4440 | p.81 |
| 3616 | LUBRICATION SYSTEM | 133-9637 | p.92 |
| 3606 | FUEL SYSTEM | 030-7951 | p.150 |
| 3608 | FUEL SYSTEM | 030-7951 | p.148 |
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 — FUEL SYSTEM
The fuel system covers the injection pump, injectors, fuel transfer pump, filters and water separator, lines and the tank. It meters and atomises diesel at the precise moment and quantity the engine needs. Modern CAT engines run very tight injector tolerances, so the group is sensitive to water and dirt: a worn injector dribbles instead of atomising, causing rough idle, white smoke and diluted oil, while a clogged filter starves the pump under load. Parts here are replaced when the engine misfires, smokes, loses power under load, or when the water separator keeps tripping — always after the fuel quality itself has been ruled out.
FAQ
Is 1P0043 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 3616.
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
Parts Diagram3608
