CAT 1028812 SEAL for 345B Caterpillar Part - WSTPARTS
Need a dependable Drivetrain part for your Caterpillar 345B machine? The 1028812 SEAL from WSTPARTS is manufactured to OEM-grade tolerances. It is categorized under Drivetrain. Every unit is fitment-verified before dispatch. Manual reference: 345B: ELECTRICAL AND STARTING SYSTEM, group 128-8900, page 182; 3126B: ELECTRICAL AND STARTING SYSTEM, group 144-3924, page 617.
1028812 SEAL for Caterpillar 345B — Genuine & OEM Replacement Part
WSTPARTS supplies genuine and high-quality OEM replacement SEAL (Part # 1028812). Designed for CAT 345B equipment.
Compatible Models
Key Features
- ✔ 100% compatible with CAT 345B
- ✔ 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) | 1028812 |
| Product Name | SEAL |
| Brand | CAT |
| Applicable Models | 345B |
| Weight | 0.05 kg |
| Condition | New (Genuine / OEM Equivalent) |
| Warranty | 12 Months |
Where This Part Fits
Every row below is a real listing of 1028812 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 |
| 345B | ELECTRICAL AND STARTING SYSTEM | 128-8900 | p.182 |
| 3126B | ELECTRICAL AND STARTING SYSTEM | 144-3924 | p.617 |
| G3508 | ELECTRICAL AND STARTING SYSTEM | 154-3853 | p.472 |
| 345B | ELECTRICAL AND STARTING SYSTEM | 150-6961 | p.184 |
| 345B | ELECTRICAL AND STARTING SYSTEM | 117-2763 | p.280 |
| 345B | HYDRAULIC SYSTEM | 128-7443 | p.525 |
| 345B | HYDRAULIC SYSTEM | 128-7443 | p.527 |
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.
System Notes — HYDRAULIC SYSTEM
The hydraulic system covers the main pump, control valves, cylinders, hydraulic tank, filters, hoses and all the fittings that connect them. It converts engine power into the pressure and flow that drive boom, bucket, steering and travel functions. Hydraulic parts fail mainly through contamination and heat: dirt that passes a worn breather scores pump components, aged hoses crack at the crimp, and O-rings harden and weep under pressure. A part in this group is normally replaced when a function drifts, a cylinder creeps, oil shows up under a machine that used to be dry, or the filter comes out loaded with metal.
FAQ
Is 1028812 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 345B.
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
