CAT 0951519 O-RING for 345C Caterpillar Part - WSTPARTS
WSTPARTS supplies the 0951519 O-RING, a CAT Drivetrain replacement part designed for Caterpillar 345C, 365B and 330C applications. 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: 325D: HYDRAULIC SYSTEM, group 227-0620, page 374; 345C: FUEL SYSTEM, group 223-3095, page 131.
0951519 O-RING for Caterpillar 345C — Genuine CAT & Replacement Part
WSTPARTS supplies genuine CAT and OEM-equivalent direct-replacement O-RING (Part # 0951519). Designed for CAT 345C, 365B, 330C, 336D, 325C, 325D, 330D, 320C, 320D, 345D equipment.
Compatible Models
Key Features
- ✔ 100% compatible with CAT 345C, 365B, 330C, 336D, 325C, 325D, 330D, 320C, 320D, 345D
- ✔ Meets Caterpillar original quality and performance standards
- ✔ Genuine CAT lines: New Genuine / Cat Reman / Cat Classic | OEM-equivalent direct replacements
- ✔ In stock, ready to ship
Specifications
| Part Number (MPN) | 0951519 |
| Product Name | O-RING |
| Brand | CAT |
| Applicable Models | 345C, 365B, 330C, 336D, 325C, 325D, 330D, 320C, 320D, 345D |
| Weight | 0.05 kg |
| Condition | New (Genuine CAT / OEM-equivalent direct replacement) |
| Warranty | 12 Months |
Where This Part Fits
Every row below is a real listing of 0951519 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 |
| 325D | HYDRAULIC SYSTEM | 227-0620 | p.374 |
| 330D | HYDRAULIC SYSTEM | 227-0620 | p.397 |
| 336D | UNDERCARRIAGE | 227-0620 | p.388 |
| 345C | FUEL SYSTEM | 223-3095 | p.131 |
| 365B | FUEL SYSTEM | 138-5596 | p.116 |
| 325C | FUEL SYSTEM | 177-5816 | p.159 |
| 330C | FUEL SYSTEM | 184-9066 | p.179 |
| 330D | HYDRAULIC SYSTEM | 227-0620 | p.392 |
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.
System Notes — UNDERCARRIAGE
The undercarriage group covers tracks, shoes, links, bushings, rollers, idlers, sprockets, track tensioners and the recoil hardware. It carries the whole machine weight and transmits drive force to the ground, and it is normally the single largest wear cost on a tracked machine. Wear is a system: a worn sprocket accelerates chain wear, a loose track pounds the bushings, and a seized roller flat-spots the link it runs on. Parts here are replaced on measured wear — bushing diameter, shoe height, roller flange — and replacing one component out of phase with the rest usually shortens the life of both.
FAQ
Is 0951519 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 345C.
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?
In stock — ships within 24 hours. Every order is covered by a warranty per quotation.
📞 Get a Quote: Contact the WSTPARTS parts team | Email: cat@wstparts.com
