CAT 9Y1798 SEAL for 3306 Caterpillar Part - WSTPARTS
Need a dependable Drivetrain part for your Caterpillar 3306 machine? The 9Y1798 SEAL from WSTPARTS is manufactured to OEM-grade tolerances. It is categorized under Drivetrain. 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: 3306: BASIC ENGINE, group 505-0157, page 152; 3306: SERVICE EQUIPMENT AND SUPPLIES, group 155-1379, page 1886.
9Y1798 SEAL for Caterpillar 3306 — Genuine & OEM Replacement Part
WSTPARTS supplies genuine and high-quality OEM replacement SEAL (Part # 9Y1798). Designed for CAT 3306 equipment.
Compatible Models
Key Features
- ✔ 100% compatible with CAT 3306
- ✔ 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) | 9Y1798 |
| Product Name | SEAL |
| Brand | CAT |
| Applicable Models | 3306 |
| Weight | 0.05 kg |
| Condition | New (Genuine / OEM Equivalent) |
| Warranty | 12 Months |
Where This Part Fits
Every row below is a real listing of 9Y1798 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 | BASIC ENGINE | 505-0157 | p.152 |
| 3306 | BASIC ENGINE | 505-0157 | p.153 |
| 3306 | BASIC ENGINE | 505-0157 | p.156 |
| 3306 | SERVICE EQUIPMENT AND SUPPLIES | 155-1379 | p.1886 |
| 3306 | SERVICE EQUIPMENT AND SUPPLIES | 234-8014 | p.1887 |
| 3306 | SERVICE EQUIPMENT AND SUPPLIES | 392-4479 | p.1891 |
| 3306 | SERVICE EQUIPMENT AND SUPPLIES | 461-3282 | p.1893 |
System Notes — BASIC ENGINE
The basic engine group covers the core structure and internals: cylinder block, cylinder head, pistons, rings, liners, connecting rods, crankshaft, bearings, camshaft and the gasket sets that seal them. These parts determine compression, oil pressure and power output. They wear gradually — rings lose tension, bearings show copper, liners glaze — and the first signs are usually blow-by from the breather, rising oil consumption, or a knock that gets louder as the engine warms. Replacing a basic engine part is a planned overhaul decision rather than a roadside fix, so matching the exact part number and serial number range matters more here than anywhere else on the machine.
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 9Y1798 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 3306.
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
