CAT 1125282 SEAL for C18 Caterpillar Part - WSTPARTS
WSTPARTS supplies the 1125282 SEAL, a CAT Drivetrain replacement part designed for Caterpillar C18, C9 and 3406E applications. It is categorized under Drivetrain. Every unit is fitment-verified before dispatch. Manual reference: 3406E: COOLING SYSTEM, group 131-8294, page 245; C18: ELECTRICAL AND STARTING SYSTEM, group 241-2422, page 322.
1125282 SEAL for Caterpillar C18 — Genuine & OEM Replacement Part
WSTPARTS supplies genuine and high-quality OEM replacement SEAL (Part # 1125282). Designed for CAT C18, C9, 3406E equipment.
Compatible Models
Key Features
- ✔ 100% compatible with CAT C18, C9, 3406E
- ✔ Meets Caterpillar original quality and performance standards
- ✔ Genuine CAT parts with anti-counterfeit label | OEM alternatives with warranty
- ✔ Available for order, contact for lead time
Specifications
| Part Number (MPN) | 1125282 |
| Product Name | SEAL |
| Brand | CAT |
| Applicable Models | C18, C9, 3406E |
| Weight | 0.05 kg |
| Condition | New (Genuine / OEM Equivalent) |
| Warranty | 12 Months |
Where This Part Fits
Every row below is a real listing of 1125282 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 |
| 3406E | COOLING SYSTEM | 131-8294 | p.245 |
| C18 | ELECTRICAL AND STARTING SYSTEM | 241-2422 | p.322 |
| C9 | COOLING SYSTEM | 210-6184 | p.326 |
| 3406E | COOLING SYSTEM | 124-9043 | p.283 |
| C9 | COOLING SYSTEM | 220-2765 | p.328 |
| C18 | ELECTRICAL AND STARTING SYSTEM | 229-2012 | p.703 |
System Notes — COOLING SYSTEM
The cooling system covers the radiator, water pump, thermostat, fan and fan drive, coolant hoses, clamps, the surge tank and the belts that drive it. It holds engine temperature inside the range where clearances and oil film stay correct. Failures are usually slow and then sudden: a hose softens and balloons before it bursts, a water pump seal starts weeping from the weep hole, a thermostat sticks partly open so the engine runs cold and burns more fuel. On construction sites the radiator also packs with dust and debris, which raises pressure across the core and finds the weakest hose or clamp first.
System Notes — ELECTRICAL AND STARTING SYSTEM
The electrical and starting system covers the battery, starter motor, alternator, wiring harness, relays, switches and the instrument panel. It carries current from the batteries to the starter to crank the engine, and from the alternator back to keep the batteries charged. Because these machines work in dust, vibration and wide temperature swings, connectors corrode, harness insulation chafes against the frame, and starter solenoids burn out from repeated short cranks. Parts in this group are usually replaced on a symptom basis — slow cranking, a dash warning, lights that dim under load, or a no-start condition traced to an open circuit.
FAQ
Is 1125282 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 C18.
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?
Lead time confirmed on request; we quote the fastest available option. Every order is covered by a 12-month warranty.
📞 Get a Quote: Contact the WSTPARTS parts team | Email: cat@wstparts.com
