CAT 2986387 SEAL-O-RIN for 3516B Caterpillar Part - WSTPARTS
The 2986387 SEAL-O-RIN is a genuine and high-quality OEM replacement part compatible with Caterpillar 3516B, 3512 and 3516C equipment. It is categorized under Drivetrain. Every unit is fitment-verified before dispatch. Manual reference: 3508C: LUBRICATION SYSTEM, group 298-6387, page 165; 3516: LUBRICATION SYSTEM, group 106-9873, page 204.
2986387 SEAL-O-RIN for Caterpillar 3516B — Genuine CAT & Replacement Part
WSTPARTS supplies genuine CAT and OEM-equivalent direct-replacement SEAL-O-RIN (Part # 2986387). Designed for CAT 3516B, 3512, 3516C, 3516 equipment.
Compatible Models
Key Features
- ✔ 100% compatible with CAT 3516B, 3512, 3516C, 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) | 2986387 |
| Product Name | SEAL-O-RIN |
| Brand | CAT |
| Applicable Models | 3516B, 3512, 3516C, 3516 |
| 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 2986387 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 |
| 3508C | LUBRICATION SYSTEM | 298-6387 | p.165 |
| 3512 | LUBRICATION SYSTEM | 298-6387 | p.446 |
| 3516 | LUBRICATION SYSTEM | 106-9873 | p.204 |
| 3516B | LUBRICATION SYSTEM | 106-9873 | p.172 |
| 3516C | LUBRICATION SYSTEM | 231-4915 | p.171 |
| 3516B | LUBRICATION SYSTEM | 106-9873 | p.330 |
| 3512 | SERVICE EQUIPMENT AND SUPPLIES | 135-8813 | p.1496 |
| 3512 | SERVICE EQUIPMENT AND SUPPLIES | 145-4923 | p.1497 |
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 — 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 2986387 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 3516B.
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
