Skip to product information
SKU:
ZZ3F07289
Same day shipping if ordered by 4PM CST.
3X Ceramic Piston Plunger 47040409 20×14×50mm Fit General Pump Interpump
$78.99
In Stock
$78.99
Sale price
$78.99
Regular price
Part Number(s)
Estimated delivery between
Let Northline Parts Do the Heavy Lifting for You!
Not sure which part you need? Our team can help you find the right replacement.
Parts Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT
Live Chat: Available 24/7
I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks
Edward H. — Verified customer
Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
3X Ceramic Piston Plunger for General Pump
This set of 3X ceramic piston plungers, cross-referenced as part number 47040409, is a direct replacement for General Pump and Interpump pressure washer pumps. Each plunger measures 20×14×50mm and is engineered to maintain high pressure in the pump assembly.
Overview
These ceramic piston plungers are precision-machined components designed for use in high-pressure pumps from General Pump and Interpump. The 20×14×50mm dimensions provide a drop-in fit for pumps that accept this plunger size. This 3-piece set replaces the worn plungers in your pump to restore optimal flow and pressure.
Built For Performance
- High-purity ceramic material offers exceptional hardness and resistance to abrasive particles
- Precision ground and polished surface reduces friction against pump seals
- Corrosion-resistant construction ensures long service life in wet environments
- Compact 20×14×50mm sizing fits compact triplex pump heads from General Pump and Interpump
- Supplied as a set of 3 for a complete plunger replacement
Fits These Machines
- for General Pump triplex pumps using 47040409 equivalent plungers
- for Interpump triplex pumps using 20×14×50mm plungers
On-The-Job Use
- Replace worn plungers in pressure washers used for fleet cleaning and heavy machinery washdown
- Restore pumping efficiency in stationary high-pressure cleaning systems
- Suitable for use in food processing and washdown applications where consistent pressure is critical
Specs At A Glance
| Part Number(s) | 47040409 |
| Diameter | 20 mm |
| Length | 50 mm |
| Quantity | 3 |
Good To Know
Q: What symptoms indicate that plungers need replacement? A: Common signs include reduced pressure, fluctuating output, or visible scoring on the plunger surface. If you notice excessive seal wear or noise from the pump, inspect the plungers.
Q: Are these plungers compatible with both General Pump and Interpump models? A: Yes, since the 20×14×50mm size is a shared specification, these plungers are suitable for any pump that uses this dimension, regardless of the brand label. Always verify your pump's plunger size before ordering.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.