CAT 2W8378 ADAPTER for 3512 Caterpillar Part - WSTPARTS
The 2W8378 ADAPTER is a genuine and high-quality OEM replacement part compatible with Caterpillar 3512, G3508 and 3516 equipment. It is categorized under Structure. Every unit is fitment-verified before dispatch. Manual reference: 3512: LUBRICATION SYSTEM, group 155-1690, page 305; 3516: LUBRICATION SYSTEM, group 120-4501, page 186.
2W8378 ADAPTER for Caterpillar 3512 — Genuine CAT & Replacement Part
WSTPARTS supplies genuine CAT and OEM-equivalent direct-replacement ADAPTER (Part # 2W8378). Designed for CAT 3512, G3508, 3516 equipment.
Compatible Models
Key Features
- ✔ 100% compatible with CAT 3512, G3508, 3516
- ✔ 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) | 2W8378 |
| Product Name | ADAPTER |
| Brand | CAT |
| Applicable Models | 3512, G3508, 3516 |
| Weight | 3.99 kg |
| Condition | New (Genuine CAT / OEM-equivalent direct replacement) |
| Warranty | 12 Months |
Where This Part Fits
Every row below is a real listing of 2W8378 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 |
| 3512 | LUBRICATION SYSTEM | 155-1690 | p.305 |
| 3516 | LUBRICATION SYSTEM | 120-4501 | p.186 |
| G3508 | LUBRICATION SYSTEM | 134-0975 | p.153 |
| 3512 | LUBRICATION SYSTEM | 133-9313 | p.388 |
| G3508 | LUBRICATION SYSTEM | 133-9313 | p.145 |
| 3512 | LUBRICATION SYSTEM | 133-9313 | p.299 |
| G3508 | LUBRICATION SYSTEM | 133-9313 | p.149 |
| 3512 | LUBRICATION SYSTEM | 133-9313 | p.383 |
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 2W8378 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
