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SKU:
NLT1G02829
Ships for free in 2–4 business days.
120-105112-2 12V Continuous-Duty Solenoid for Freightliner Applications
$42.99
In Stock
$42.99
Sale price
$42.99
Regular price
Switch a high-current 12-volt circuit continuously on compatible Freightliner and equipment applications with a replacement solenoid for 120-105112-2.
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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
- Freightliner trucks using 120-105112-2
- Specialty vehicles using the same 12V four-terminal continuous-duty contactor
- Equipment applications matching the mounting and electrical rating
Product Overview
When a power feed clicks but does not stay live, heats at the terminals, or works only after tapping the contactor, worn internal contacts may be the cause. This unit is built for a continuous-duty circuit where the coil can remain energized during normal operation.
Continuous-duty does not mean it replaces every starter solenoid. Match the voltage, terminal layout, mounting, duty rating, and original number before moving heavy cables.
This is an aftermarket replacement part and is not manufactured or supplied by the original equipment brand.
Key Features & Performance
- 12V continuous-duty solenoid
- Matches reference 120-105112-2
- Four-terminal style for compatible power circuits
- Useful for battery, accessory, or control feeds designed around this contactor
Replaces Part Numbers
- 120-105112-2
Common Uses
- Replacing a contactor with burned internal contacts
- Repairing an intermittent high-current accessory feed
- Correcting voltage drop across a confirmed failed solenoid
- Restoring a continuous-duty battery connection
Technical Specifications
- Product Type: Continuous-duty power solenoid
- Voltage: 12V DC
- Terminal Style: Four terminal
- Application: Compatible heavy-current control circuit
Installation & Fitment
- Disconnect all battery grounds before moving cables
- Label the large and small terminals
- Clean cable lugs and replace heat-damaged ends
- Mount the solenoid securely and torque nuts without twisting the studs
- Test voltage drop under load and confirm the unit is not being used outside its duty rating
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown. Model names alone may not guarantee fitment. Compare the original component, reference number, connector or mounting design, dimensions, and any serial-number or production-date break before purchase.
Frequently Asked Questions
Q: Is this the same as a starter solenoid? A: Not automatically. This part is listed for continuous duty; match the original circuit and number.
Q: What can cause hot terminals? A: Loose or corroded cable lugs, overload, and worn internal contacts can all create heat.
Q: Does Freightliner model alone confirm fit? A: No. Match 120-105112-2, voltage, terminal layout, and mounting.
Part Summary
keywords: 120-105112-2 solenoid, Freightliner 12V contactor, continuous duty power relay, four terminal battery solenoid, truck accessory power repair, 12 volt heavy current relay
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.