CAT 3261643 FILTER AS for C27 Caterpillar Part - WSTPARTS
WSTPARTS supplies the 3261643 FILTER AS, a CAT Water Separator replacement part designed for Caterpillar C27 applications. It is categorized under Water Separator. Every unit is fitment-verified before dispatch, backed by factory-direct pricing and warranty coverage, and currently in stock for dispatch within 24 hours. Manual reference: C27: FUEL SYSTEM, group 213-4740, page 159.
3261643 FILTER AS for Caterpillar C27 — Genuine & OEM Replacement Part
WSTPARTS supplies genuine and high-quality OEM replacement FILTER AS (Part # 3261643). Designed for CAT C27 equipment.
Compatible Models
Key Features
- ✔ 100% compatible with CAT C27
- ✔ Meets Caterpillar original quality and performance standards
- ✔ Genuine CAT parts with anti-counterfeit label | OEM alternatives with warranty
- ✔ In stock, ready to ship
Specifications
| Part Number (MPN) | 3261643 |
| Product Name | FILTER AS |
| Brand | CAT |
| Applicable Models | C27 |
| Weight | 1.13 kg |
| Condition | New (Genuine / OEM Equivalent) |
| Warranty | 12 Months |
Where This Part Fits
Every row below is a real listing of 3261643 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 |
| C27 | FUEL SYSTEM | 213-4740 | p.159 |
System Notes — FUEL SYSTEM
The fuel system covers the injection pump, injectors, fuel transfer pump, filters and water separator, lines and the tank. It meters and atomises diesel at the precise moment and quantity the engine needs. Modern CAT engines run very tight injector tolerances, so the group is sensitive to water and dirt: a worn injector dribbles instead of atomising, causing rough idle, white smoke and diluted oil, while a clogged filter starves the pump under load. Parts here are replaced when the engine misfires, smokes, loses power under load, or when the water separator keeps tripping — always after the fuel quality itself has been ruled out.
FAQ
Is 3261643 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 C27.
Genuine vs OEM replacement — what is the difference?
Genuine CAT parts carry an anti-counterfeit label. OEM equivalents are built to the same specifications, bench-tested and supplied with full warranty at a better price.
Stock, shipping and warranty?
In stock — ships within 24 hours. Every order is covered by a 12-month warranty.
📞 Get a Quote: Contact the WSTPARTS parts team | Email: cat@wstparts.com
