Joystick Pilot Control Valve 487-8455 for CAT 320D, E320GC, and 340 Excavators
The 487-8455 joystick pilot valve is used in the hydraulic pilot control system of excavators. It converts the operator's joystick operations into hydraulic pilot signals, thereby controlling the main control valve to complete actions such as boom, stick, bucket, and swing.
| Type | Hydraulic Pilot Control Valve |
| Control Method | Joystick operation / Hydraulic pilot control |
| Material | Aluminum alloy valve body + high wear-resistant internal components |
| Working Medium | Hydraulic oil |
Features and Advantages
• Sensitive Control—Precise joystick design for fast response and smoother operation.
• High-Strength Valve Body—Made with a high-quality aluminum alloy valve body, wear-resistant, impact-resistant, and long service life.
• Stable Pilot Control—Provides a stable pilot pressure signal, improving the control accuracy of the hydraulic system.
• OEM Standard Manufacturing—Manufactured to original equipment manufacturer (OEM) specifications, with precise dimensions and high installation compatibility.
• Adaptable to Harsh Working Conditions—Suitable for long-term, high-frequency operation environments in construction machinery.
Product Showcase
Excavator Hydraulic Pilot Control Valve 487-8455 Joint Pilot Control Valve 487-8455 for CAT 320 Excavators


More products
Please click on the corresponding image to access the page














Frequently Asked Questions
Q1: What are your main products?
A1: We specialize in excavator engine parts, such as main cylinder block, cylinder head, crankshaft, engine assembly, piston, cylinder liner, piston ring, camshaft, connecting rod, oil pump, water pump, valve series products, moving parts, etc., covering almost all parts of the entire engine.
Q2: Can you provide cross-reference information for OEM part numbers?
A2: Yes, we support original parts interchange. Please provide the original part number, and we will verify the replacement part accordingly.
Q3: Do you test all products before shipping?
A3: Yes, we conduct 100% testing before shipping.
Q4: What are the symptoms of a pilot valve malfunction?
A4: Common symptoms include slow response, uneven operation, inaccurate control, or abnormal hydraulic action.
Q5: What precautions should be taken when replacing the 487-8455 pilot valve?
A5: During replacement, keep the hydraulic system clean and check the pilot circuit, seals, and connecting pipes for proper functioning.
Why Choose Us?
• Over 20 years of focus on construction machinery – offering a full range of excavator assemblies and accessories.
• Get a Quote – Our professional team will provide you with a quote immediately upon receiving your requirements.