221-8859 2218859 Pump High Pressure Sensor Fit for Caterpillar CAT E320C E312C

221-8859 2218859 Pump High Pressure Sensor for Caterpillar

This pump high pressure sensor monitors hydraulic system pressure and sends data to the machine's ECM for optimal pump output and engine load control. This sensor is a direct replacement for Caterpillar excavator models requiring part numbers 221-8859 and 2218859.

Overview

This pump high pressure sensor measures hydraulic pressure at the pump outlet and relays a signal to the main controller. It is designed for Caterpillar excavators such as the E320C and E312C. The sensor ensures precise pressure feedback for reliable machine operation.

Built For Performance

• Replacement for OEM part numbers 221-8859 and 2218859
• Rugged construction rated for high-pressure hydraulic systems
• Corrosion-resistant housing protects against moisture and debris
• Precision sensing element for accurate pressure readings
• Direct plug-in design for straightforward installation

Fits These Machines

• for Caterpillar E320C
• for Caterpillar E312C

On-The-Job Use

• Used on excavators for hydraulic pump pressure monitoring
• Supports dig cycle efficiency by sending pressure data to the ECM
• Helps diagnose hydraulic system faults in field conditions

Specs At A Glance

Good To Know

Q: Does this sensor replace both 221-8859 and 2218859? A: Yes, it is built to replace both part number formats, so you can use it for either reference.

Q: What happens if the sensor fails? A: A failed sensor can trigger error codes or reduce pump performance, so replacing it promptly restores proper hydraulic control.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.