Skip to product information
SKU:
NLT2J00061
Ships for free in 2–4 business days.
Differential Pressure Sensor 4339559 for Hitachi and John Deere Excavators
$111.99
In Stock
$111.99
Sale price
$111.99
Regular price
This aftermarket differential pressure sensor replaces 4339559, 9102068, and AT154530 on compatible Hitachi and John Deere excavators.
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
- John Deere 450LC, 490E, 550LC, 790ELC, 992ELC excavators
- Hitachi EX100-2, EX100-3, EX100M-3
- Hitachi EX200LC-2, EX200LC-3, EX220LC-3
- Hitachi EX400LC-3, EX400LC-3C, EX450LC-5
- Hitachi EX550LC, EX550LC-3, EX550LC-5
Product Overview
Hydraulic control problems or a pressure-related fault can occur when the controller is no longer receiving a believable pressure difference signal. This sensor is used in compatible excavator hydraulic systems to monitor that condition.
Replace it only after the wiring, connector, pressure ports, and any small hoses or passages have been checked. A restricted port or actual hydraulic problem can imitate a failed sensor.
Key Features & Performance
- Monitors differential pressure in compatible hydraulic control systems
- Replacement for Hitachi 4339559
- Crosses to John Deere AT154530 in listed applications
- Electrical sensor with matching pressure connections
- Aftermarket diagnostic repair part
Replaces Part Numbers
- 4339559
- 9102068
- 9101532
- AT154530
Common Uses
- Repairing a confirmed differential-pressure sensor fault
- Correcting an unstable pressure signal
- Replacing a sensor with damaged ports or connector
- Restoring hydraulic control after electrical diagnosis
Technical Specifications
- Part Type: Differential Pressure Sensor
- System: Excavator hydraulic control
- Compatible Brands: Hitachi and John Deere
- Replacement Type: Aftermarket
- Quantity: One sensor
Installation & Fitment
- Relieve hydraulic pressure before service
- Label and inspect every pressure connection
- Keep ports and hoses free of contamination
- Check reference voltage, ground, and signal wiring
- Verify live pressure readings after installation
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.
Match all reference numbers, ports, connector shape, and machine serial information. Do not replace the sensor solely because a hydraulic symptom is present.
Frequently Asked Questions
Q: Can this sensor cause weak or inconsistent hydraulics? A: A false signal can affect control decisions, but pump, valve, wiring, and real pressure faults must also be tested.
Q: What should be checked first? A: Inspect wiring, connector pins, pressure lines, and ports for blockage or leakage.
Q: Does it fit John Deere 490E? A: Yes, when the machine uses AT154530/4339559.
Q: Is it OEM? A: No. It is an aftermarket sensor.
Part Summary
keywords: 4339559 differential pressure sensor, Hitachi excavator hydraulic sensor, AT154530 John Deere sensor, EX400 pressure sensor, 490E differential pressure, 9102068 replacement
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.