CAT 4W3864 SEAL G for 3512 Caterpillar Part - WSTPARTS
Need a dependable Water Pump part for your Caterpillar 3512, 3306 and G3508 machine? The 4W3864 SEAL G from WSTPARTS is manufactured to OEM-grade tolerances. It is categorized under Water Pump. Every unit is fitment-verified before dispatch. Manual reference: 3306: COOLING SYSTEM, group 172-7771, page 411; 3512: COOLING SYSTEM, group 107-5565, page 487.
4W3864 SEAL G for Caterpillar 3512 — Genuine CAT & Replacement Part
WSTPARTS supplies genuine CAT and OEM-equivalent direct-replacement SEAL G (Part # 4W3864). Designed for CAT 3512, 3306, G3508 equipment.
Compatible Models
Key Features
- ✔ 100% compatible with CAT 3512, 3306, G3508
- ✔ 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) | 4W3864 |
| Product Name | SEAL G |
| Brand | CAT |
| Applicable Models | 3512, 3306, G3508 |
| 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 4W3864 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 | 172-7771 | p.411 |
| 3512 | COOLING SYSTEM | 107-5565 | p.487 |
| 3512C | COOLING SYSTEM | 212-8166 | p.186 |
| G3508 | COOLING SYSTEM | 133-3689 | p.257 |
| 3306 | COOLING SYSTEM | 134-7422 | p.415 |
| G3508 | COOLING SYSTEM | 122-0502 | p.267 |
| 3512 | COOLING SYSTEM | 120-7421 | p.475 |
| 3306 | COOLING SYSTEM | 172-7771 | p.413 |
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.
FAQ
Is 4W3864 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 3512.
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
