CAT 8T8911 BOLT for C18 Caterpillar Part - WSTPARTS
The 8T8911 BOLT is a genuine and high-quality OEM replacement part compatible with Caterpillar C18, 3516B and 3512 equipment. It is categorized under Bolt/Nut. Every unit is fitment-verified before dispatch. Manual reference: 3306: COOLING SYSTEM, group 118-6243, page 324; 3512: COOLING SYSTEM, group 127-8526, page 503.
8T8911 BOLT for Caterpillar C18 — Genuine CAT & Replacement Part
WSTPARTS supplies genuine CAT and OEM-equivalent direct-replacement BOLT (Part # 8T8911). Designed for CAT C18, 3516B, 3512, 3306, C32 equipment.
Compatible Models
Key Features
- ✔ 100% compatible with CAT C18, 3516B, 3512, 3306, C32
- ✔ 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) | 8T8911 |
| Product Name | BOLT |
| Brand | CAT |
| Applicable Models | C18, 3516B, 3512, 3306, C32 |
| 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 8T8911 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 |
| 3306 | COOLING SYSTEM | 118-6243 | p.324 |
| 3512 | COOLING SYSTEM | 127-8526 | p.503 |
| 3516B | COOLING SYSTEM | 263-8044 | p.265 |
| C18 | LUBRICATION SYSTEM | 243-3842 | p.360 |
| C32 | ELECTRICAL AND STARTING SYSTEM | 361-7623 | p.269 |
| 3516C | ELECTRICAL AND STARTING SYSTEM | 166-4373 | p.414 |
| C18 | AIR INLET AND EXHAUST SYSTEM | 296-2980 | p.537 |
| 3512 | BASIC ENGINE | 486-8507 | p.228 |
System Notes — COOLING SYSTEM
The cooling system covers the radiator, water pump, thermostat, fan and fan drive, coolant hoses, clamps, the surge tank and the belts that drive it. It holds engine temperature inside the range where clearances and oil film stay correct. Failures are usually slow and then sudden: a hose softens and balloons before it bursts, a water pump seal starts weeping from the weep hole, a thermostat sticks partly open so the engine runs cold and burns more fuel. On construction sites the radiator also packs with dust and debris, which raises pressure across the core and finds the weakest hose or clamp first.
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.
FAQ
Is 8T8911 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
