CAT 7W4782 PLUNGER for 3056 Caterpillar Part - WSTPARTS
7W4782 PLUNGER is a Fuel System component engineered for Caterpillar 3056 and 3056E machines, built to match original factory specifications. It is categorized under Fuel System. Every unit is fitment-verified before dispatch. Manual reference: 3056: LUBRICATION SYSTEM, group 214-5956, page 156; 3056E: LUBRICATION SYSTEM, group 219-1852, page 86.
7W4782 PLUNGER for Caterpillar 3056 — Genuine CAT & Replacement Part
WSTPARTS supplies genuine CAT and OEM-equivalent direct-replacement PLUNGER (Part # 7W4782). Designed for CAT 3056, 3056E equipment.
Compatible Models
Key Features
- ✔ 100% compatible with CAT 3056, 3056E
- ✔ Meets Caterpillar original quality and performance standards
- ✔ Genuine CAT lines: New Genuine / Cat Reman / Cat Classic | OEM-equivalent direct replacements
- ✔ Available for order, contact for lead time
Specifications
| Part Number (MPN) | 7W4782 |
| Product Name | PLUNGER |
| Brand | CAT |
| Applicable Models | 3056, 3056E |
| 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 7W4782 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 |
| 3056 | LUBRICATION SYSTEM | 214-5956 | p.156 |
| 3056E | LUBRICATION SYSTEM | 219-1852 | p.86 |
System Notes — LUBRICATION SYSTEM
The lubrication system covers the oil pump, oil cooler, oil filter base, relief valves, dipstick tube, pan and the galleries that distribute oil to every bearing in the engine. It is the system that keeps metal off metal. Failures tend to be either pressure loss — a worn pump, a stuck relief valve, a collapsed filter — or contamination, where sludge and debris circulate and score bearing surfaces. Oil pressure that reads low at idle, a filter that comes out heavy, or oil that turns dark far sooner than usual are the signals. Parts in this group are replaced on measured oil pressure and lab results rather than on interval alone.
FAQ
Is 7W4782 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 3056.
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?
Lead time confirmed on request; we quote the fastest available option. Every order is covered by a warranty per quotation.
📞 Get a Quote: Contact the WSTPARTS parts team | Email: cat@wstparts.com
