[Lifetime Warranty] Dump Trailer Solenoid 12V 4 Terminal 100A Intermittent Duty
12V 4-terminal intermittent duty dump trailer solenoid relay with copper threaded studs.
12V 4-terminal intermittent duty dump trailer solenoid with copper contact studs.
Close-up detail views of 12V dump trailer solenoid components including housing, copper terminals, and internal coil wire.
Multiple angles of a 12V 4-terminal 100A intermittent duty dump trailer solenoid.
Infographic showing 12V dump trailer solenoid applications for hydraulic dump trailers and RV leveling jacks.
Instructional graphic showing the simple installation of a 12V 4-terminal dump trailer solenoid.
12V 4-terminal intermittent duty dump trailer solenoid replacement part.
12V 4-terminal intermittent duty dump trailer solenoid relay with copper threaded studs.
12V 4-terminal intermittent duty dump trailer solenoid with copper contact studs.
Close-up detail views of 12V dump trailer solenoid components including housing, copper terminals, and internal coil wire.
Multiple angles of a 12V 4-terminal 100A intermittent duty dump trailer solenoid.
Infographic showing 12V dump trailer solenoid applications for hydraulic dump trailers and RV leveling jacks.
Instructional graphic showing the simple installation of a 12V 4-terminal dump trailer solenoid.
12V 4-terminal intermittent duty dump trailer solenoid replacement part.
Lifetime Warranty

[Lifetime Warranty] Dump Trailer Solenoid 12V 4 Terminal 100A Intermittent Duty

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Dump Trailer Solenoid 12V 4 Terminal 100A Intermittent Duty

Key Features

  • Voltage: 12V DC
  • Duty Cycle: Intermittent
  • Continuous Current Rating: 100A
  • Surge Current Rating: 200A
  • Terminal Count: 4
  • Construction: Insulated steel case with copper terminals
  • Includes mounting bracket and terminal hardware

Replaces / Cross-Reference Part Numbers

  • Prestolite: 15-391, 15-438
  • Monarch / Bucher: 070009
  • SAZ4201GJ
  • SAZ-4201ER
  • 7522
  • 190107
  • 391-2
  • 391-2-C

Compatibility & Fitment

  • Designed for hydraulic pump motors on dump trailers
  • Suitable for hydraulic leveling jacks and lift gates
  • Applicable to various 12V high-amperage winch and motor control circuits

When to Replace

  • Hydraulic pump motor fails to activate
  • Solenoid produces a clicking sound but does not engage the motor
  • Inconsistent or intermittent operation of the hydraulic system
  • Visible corrosion or damage to the solenoid housing or terminals

Installation Tips

  • Always disconnect the battery ground cable before starting work.
  • Ensure all electrical connections are clean, dry, and tight to prevent overheating.
  • Note the orientation of the original wiring to the large and small terminals before removal.
  • Mount the solenoid in a location protected from direct water spray and physical damage.
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  • Fixing Symptoms

    Fixing Symptoms

    Hard to start the engine | Clicking sound but no cranking | Slow or weak cranking of the starter motor | Intermittent operation, etc
  • Premium Quality

    Premium Quality

    Made of high-grade materials and fine craftsmanship to provide exceptional durability for long-time use
  • Saving Solution

    Saving Solution

    Enjoy our great-value package with all you need to optimize electrical systems - BlueStars brings DIY solutions to help you deal with any trouble
  • Simple Installation

    Simple Installation

    Please prepare a nut driver set in advance and wear work gloves to ensure safety. Do not overtighten the nut/terminal during installation.
WIDE APPLICATION

WIDE APPLICATION

- Widely used for hydraulic dump trailers: Load Trail, Parker Performance, power-up/ power-down dump trailer
WORK LIKE A CHARM

WORK LIKE A CHARM

Well-crafted housing and strong Copper-Cadmium inner coil & contacts ensure your solenoid operates safely in any harsh environment and can withstand high current
EXCEPTIONAL PARTS, REMARKABLE JOURNEY

EXCEPTIONAL PARTS, REMARKABLE JOURNEY

Enjoy your seamless journey with the support of our replacement parts.
Brand Model Number
Replaces parts #SAZ4201GJ, SAZ-4201GJ, SAZ-4201ER, SAZ4201ER, 7522, 07522, 070009, 190107, 391-2-C
Voltage 12V
Solenoid type 4 Terminal
Surge Current 200A

FAQ

This 12V 100A solenoid is designed for use in hydraulic pump dump trailer systems. It is a direct replacement for units requiring Monarch Bucher specifications and is compatible with part number 070009.
This unit is commonly used to replace or cross-reference with part numbers 391-2, 391-2-C, and 070009.
If you hear a clicking sound when you press the lift button but the pump motor does not engage, or if the trailer lift operates intermittently, the solenoid is likely failing. Other symptoms include the pump running continuously even when the switch is released or a complete lack of response when the lift button is activated.
Intermittent duty means the solenoid is designed to handle high current loads for short bursts of operation, such as the time required to raise a dump trailer bed. It is not intended for continuous operation and should be allowed to cool between cycles to prevent internal overheating.
Before replacing the solenoid, ensure your battery is fully charged and all cable connections are clean and tight. Corrosion on the battery terminals or the ground wire is a frequent cause of power delivery issues that can mimic a faulty solenoid.
Replacing this solenoid is a straightforward task that typically takes 15 to 30 minutes. You will need basic hand tools, such as a socket set or wrenches, to disconnect the battery cables and the mounting hardware. Be sure to disconnect the positive battery terminal before beginning to prevent accidental shorting.