CAT 2478708 PISTON AS for 330D Caterpillar Part - WSTPARTS
Need a dependable Piston Assembly part for your Caterpillar 330D machine? The 2478708 PISTON AS from WSTPARTS is manufactured to OEM-grade tolerances. It is categorized under Piston Assembly. Every unit is fitment-verified before dispatch. Manual reference: 330D: HYDRAULIC SYSTEM, group 283-6116, page 411; 345C: HYDRAULIC SYSTEM, group 283-6084, page 426.
2478708 PISTON AS for Caterpillar 330D — Genuine & OEM Replacement Part
WSTPARTS supplies genuine and high-quality OEM replacement PISTON AS (Part # 2478708). Designed for CAT 330D, 345C equipment.
Compatible Models
Key Features
- ✔ 100% compatible with CAT 330D, 345C
- ✔ 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) | 2478708 |
| Product Name | PISTON AS |
| Brand | CAT |
| Applicable Models | 330D, 345C |
| Weight | 2.63 kg |
| Condition | New (Genuine / OEM Equivalent) |
| Warranty | 12 Months |
Where This Part Fits
Every row below is a real listing of 2478708 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 |
| 330D | HYDRAULIC SYSTEM | 283-6116 | p.411 |
| 345C | HYDRAULIC SYSTEM | 283-6084 | p.426 |
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 2478708 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 330D.
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
