Best Idle-Up Solenoid Relays of 2025

Robert Reyes Avatar
Robert Reyes
Last Updated: Apr 26, 2023

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Are you looking for the idle-up solenoid relays from different brands on the market, such as UMPARTS, Molex, ESUPPORT, Standard Motor Products, but don't know where to start? We put together a list of the 4 Best Idle-Up Solenoid Relays to help you find the one you want.

To compile our list of the best idle-up solenoid relays, we've researched and evaluated a range of the best-selling idle-up solenoid relays on the market, costing between $10.00 and $83.00. We recommend UMPARTS Idle-Up Solenoid Relay as our top pick because of its best overall performance. For more of our top picks, read on! Also, check out our buying guide for some suggestions on how to choose the right idle-up solenoid relay.

At a Glance: Our Top Picks

(SN2)UMPARTS 12V Starter Relay Solenoid Switch Motor for All years TaoTao youth KIDS ATV 4 Wheeler 125cc Tao Tao ATA-125A1 / ATA-125-A1 / ATA 125 A1 / ATA125A1 Cover #TOP 1
(SN2)UMPARTS 12V Starter Relay Solenoid Switch Motor for All years TaoTao youth KIDS ATV 4 Wheeler 125cc Tao Tao ATA-125A1 / ATA-125-A1 / ATA 125 A1 / ATA125A1
ftb score rating icon 9.9
Molex Connector Lot, (9 Circuit) w/18-22 AWG .093" Pins, Free Hanging, Pitch - Mating Interface .264" (6.04mm), 94V-2-3191 Series, w/Lock Cover #TOP 2
Molex Connector Lot, (9 Circuit) w/18-22 AWG .093" Pins, Free Hanging, Pitch - Mating Interface .264" (6.04mm), 94V-2-3191 Series, w/Lock
ftb score rating icon 9.8
ESUPPORT Car Relay 12V 40A SPST 4Pin Switch Automotive Pack of 10 Cover #TOP 3
ESUPPORT Car Relay 12V 40A SPST 4Pin Switch Automotive Pack of 10
ftb score rating icon 9.6

Top 4 Idle-Up Solenoid Relays

#TOP 1

(SN2)UMPARTS 12V Starter Relay Solenoid Switch Motor for All years TaoTao youth KIDS ATV 4 Wheeler 125cc Tao Tao ATA-125A1 / ATA-125-A1 / ATA 125 A1 / ATA125A1

UMPARTS
0.25 pounds
(SN2)UMPARTS 12V Starter Relay Solenoid Switch Motor for All years TaoTao youth KIDS ATV 4 Wheeler 125cc Tao Tao ATA-125A1 / ATA-125-A1 / ATA 125 A1 / ATA125A1 Cover
(SN2)UMPARTS 12V Starter Relay Solenoid Switch Motor for All years TaoTao youth KIDS ATV 4 Wheeler 125cc Tao Tao ATA-125A1 / ATA-125-A1 / ATA 125 A1 / ATA125A1

Features
100% Brand New, High Quality
Domestic US Seller, Lighting Fast Shipping
Three Monthes Warranty, Hassle Free Return, Money Back Guarantee
#TOP 2

Molex Connector Lot, (9 Circuit) w/18-22 AWG .093" Pins, Free Hanging, Pitch - Mating Interface .264" (6.04mm), 94V-2-3191 Series, w/Lock

Molex Connector Lot, (9 Circuit) w/18-22 AWG .093" Pins, Free Hanging, Pitch - Mating Interface .264" (6.04mm), 94V-2-3191 Series, w/Lock Cover
Molex Connector Lot, (9 Circuit) w/18-22 AWG .093" Pins, Free Hanging, Pitch - Mating Interface .264" (6.04mm), 94V-2-3191 Series, w/Lock

Features
Mounting Type: Snap On 9-Circuits (6.04mm) ( 94V-2 - 3191 Series), W/Lock
Molex No. Of Circuits: 9 , ( 1 Completed Set ) Lock To Mate Part
Temperature Range - Operating -40°C To +105°C
Strip/Reel Packaging Contacts Have An Easier Time Handling The Terminals While They Are Attached To The Strip. Whenever Yours Hand Are Steady Or Not Then Maybe This Will Make Things Easier For You.
Pin Size: Standard .093" 18-22 AWG, Pitch - Mating Interface = .264" (6.04mm)
#TOP 3

ESUPPORT Car Relay 12V 40A SPST 4Pin Switch Automotive Pack of 10

1.98 pounds
ESUPPORT Car Relay 12V 40A SPST 4Pin Switch Automotive Pack of 10 Cover
ESUPPORT Car Relay 12V 40A SPST 4Pin Switch Automotive Pack of 10

Features
12 Volt 40 Amp 4-Prong Relays
Brand New Heavy Duty SPST Relays
Widely Used In Car Keys Power Control, Over-Load Protection, Trunk Release, Power Door Lock/actuator Control, Control Motors/other Electronics Etc.
Mechanical Life Of 100,000+ Cycles, Life Expectancy Mechanical: 10,000,000 Operations.
High 40A Coil Capacity- Able To Handle Those High Current Applications With Ease
#TOP 4

Standard Motor Products Intermotor Idle Stop Solenoid (ES171)

ES171
2.20 x 1.90 x 4.10 inches
0.31 pounds
Standard Motor Products Intermotor Idle Stop Solenoid (ES171) Cover
Standard Motor Products Intermotor Idle Stop Solenoid (ES171)

Features
Intermotor Idle Stop Solenoid (ES171)
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What does a solenoid relay do?

Solenoids are a type of relay engineered to remotely switch a heavier current. Similar to the smaller electromechanical cube relays, a coil is used to generate a magnetic field when electricity is passed through it, which effectively opens or closes the circuit.

2. How do you test a relay solenoid?

So to test one you actually have to activate it you can't really test it passively with a multimeter

3. What is the difference between a relay and a solenoid?

The main difference between Relay and Solenoid is, Relay is a switching device that switches or routs the electrical current or signal whereas the solenoid is an electromagnetic actuating device that pushes or pulls a shaft or any metallic arrangement.

4. How do you test a starter relay solenoid with a multimeter?

And black multimeter leads we will place them on either side of the terminals. They are not polarity

Editor's Notes

During our idle-up solenoid relay research, we found 5 idle-up solenoid relay products and shortlisted 4 quality products. We collected and analyzed 2,415 customer reviews through our big data system to write the idle-up solenoid relays list. We found that most customers choose idle-up solenoid relays with an average price of $14.39.

The idle-up solenoid relays are available for purchase. We have researched hundreds of brands and picked the top brands of idle-up solenoid relays, including UMPARTS, Molex, ESUPPORT, Standard Motor Products. The seller of top 1 product has received honest feedback from 569 consumers with an average rating of 4.9.

Written by
Robert Reyes Avatar

Robert Reyes is a dedicated writer from San Francisco with a bachelor of degree in mechanics and a bachelor of degree in marketing. He focuses on making some complicated topics simple and enjoys explaining complex and technical things in an easy-to-understand way.