CAT 457-9878 4579878 Solenoid Valve Assembly Excavator Engine Parts 320D 330D 336D 390F

CAT 457-9878 Solenoid Valve Assembly

Replacement solenoid valve assembly for 320D, 330D, 336D and 390F excavator engine systems.

The CAT 457-9878 Solenoid Valve Assembly is a precision-engineered replacement component built for 320D, 330D, 336D and 390F excavators. As an important item among Excavator Engine Parts, this Solenoid Valve Assembly supports accurate hydraulic and engine control, delivering dependable actuation across demanding earthmoving and construction conditions.

Each unit is produced to match original equipment fit and function, so it installs at the same mounting and connection points as the part it replaces. When you source CAT Parts for excavators, this Solenoid Valve Assembly is a direct cross-reference for part numbers 457-9878 and 4579878, keeping replacement straightforward and machine downtime low.

Key Features

• Direct replacement for CAT 457-9878 / 4579878 solenoid valve assembly.
• Compatible with 320D, 330D, 336D and 390F excavators.
• Precision-machined body for consistent valve actuation and sealing.
• Robust construction that resists wear, heat and pressure cycling.
• Stable coil performance for reliable on-off control response.
• Straightforward installation that follows the original factory layout.

Specifications

Compatibility

This Solenoid Valve Assembly is intended for 320D, 330D, 336D and 390F excavators. It serves as a cross-reference replacement for 457-9878 and 4579878. Please confirm your machine model and original part number before ordering to ensure correct fitment.

Applications

• Excavator hydraulic and engine control circuits
• Construction, mining and earthmoving equipment service
• Excavator Engine Parts replacement and overhaul projects
• Fleet maintenance and replacement part stocking

Why Choose This Part

Operators and workshops look for CAT Parts that restore reliable control without excessive downtime. This Excavator Engine Parts grade Solenoid Valve Assembly is produced with controlled tolerances and durable materials so it stands up to repeated daily cycles on site. Its direct-fit design helps technicians complete the replacement quickly using standard tools.

FAQ

Q: What part numbers does this valve replace?
It cross-references 457-9878 and 4579878.

Q: Which machines is it built for?
The 320D, 330D, 336D and 390F excavators.

Q: How is this product categorised?
It is catalogued as an Excavator Engine Parts item.