CAT 8C8921 ADAPTER for 3616 Caterpillar Part - WSTPARTS
Need a dependable Fitting part for your Caterpillar 3616, 3608 and 3606 machine? The 8C8921 ADAPTER from WSTPARTS is manufactured to OEM-grade tolerances. It is categorized under Fitting. Every unit is fitment-verified before dispatch. Manual reference: 3606: OPERATOR STATION, group 143-7511, page 199; 3616: OPERATOR STATION, group 139-8479, page 245.
8C8921 ADAPTER for Caterpillar 3616 — Genuine CAT & Replacement Part
WSTPARTS supplies genuine CAT and OEM-equivalent direct-replacement ADAPTER (Part # 8C8921). 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 lines: New Genuine / Cat Reman / Cat Classic | OEM-equivalent direct replacements
- ✔ Available for order, contact for lead time
Specifications
| Part Number (MPN) | 8C8921 |
| Product Name | ADAPTER |
| Brand | CAT |
| Applicable Models | 3616, 3608, 3606 |
| Weight | 0.32 kg |
| Condition | New (Genuine CAT / OEM-equivalent direct replacement) |
| Warranty | 12 Months |
Where This Part Fits
Every row below is a real listing of 8C8921 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 | OPERATOR STATION | 143-7511 | p.199 |
| 3608 | OPERATOR STATION | 143-7511 | p.196 |
| 3616 | OPERATOR STATION | 139-8479 | p.245 |
System Notes — OPERATOR STATION
The operator station covers the cab structure, seat and suspension, glass, wipers, door hardware, pedals, joysticks, armrests, HVAC ducting and the interior trim. It is the group that decides how tolerable a ten-hour shift feels. Wear here is driven by daily entry and exit, sun exposure and dust: seat suspensions sag, door struts lose charge, wiper linkages seize, and rubber seals harden until the cab leaks in rain. Parts in this group are replaced when a control feels vague, a latch no longer holds, or the cab no longer keeps dust and water out — small items, but the ones operators complain about first.
FAQ
Is 8C8921 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 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
