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⚡ Power up your gear with unstoppable reliability!
The MaySpare 3 Terminal Continuous Duty Solenoid Relay is a robust 12VDC starter solenoid designed for heavy-duty automotive and marine applications. Featuring a 200A max current rating, copper contacts, and a corrosion-resistant plated steel housing, it ensures reliable battery isolation and long-lasting performance. Ideal for demanding environments, it supports continuous duty operation with a recommended 5-minute cool-down to prevent overheating.




| ASIN | B0797WZBD9 |
| Best Sellers Rank | #6,188 in Automotive ( See Top 100 in Automotive ) #1 in Automotive Replacement Starter Solenoids |
| Brand | MaySpare |
| Brand Name | MaySpare |
| Coil Voltage | 12 Volts |
| Connector Type | Screw |
| Contact Current Rating | 200 Amps |
| Contact Material | Copper |
| Contact Type | Normally Open |
| Current Rating | 200 Amps |
| Customer Reviews | 4.4 out of 5 stars 1,047 Reviews |
| Manufacturer | May Spare Parts |
| Maximum Switching Current | 5 Amps |
| Maximum Switching Voltage | 12 Volts |
| Minimum Switching Voltage | 12 Volts (DC) |
| Model | US-AUTO3T |
| Mounting Type | Pole |
| Number of Terminals | 3 |
| Operating Time | 5 Minutes |
| Operation Mode | Automatic |
| Part Interchange Info | 15-123, SAS4208, SAW4226, 15-139, 15-247,118665,15-123 |
| Part Number | US-AUTO3T |
| Specification Met | OEM |
| UPC | 729043161300 |
| Unit Count | 1.0 Count |
| Wattage | 10.28 watts |
B**5
Universal fit and compatibility
Didn’t come with curved base but I just adjusted with pliers. Fit perfectly and restored dump function to my truck. Works genetically for many of the hydraulic pumps out there.
L**M
Dump Bed Solenoid
Worked great for my 98 Ram 3500 dump bed. Old solenoid went out and this one does great.
O**S
Snow and ice management llc
What a freat buy for plowing contractors with Curtis. Fisher. Western plows systems. Its really hard to beat up when plowing lots and roadwork plowing and maintenance threwout the storms. I purchased a few for back up. Dont use starter units it needs to be continuous soliniod type. Awesome product great price.
W**N
Works great.
Works great, used it on my riding mower.
P**.
Part
Looks to in good quality
M**T
Junk Quality
failed ~40 Days after installation. Poor Quality. Past return period couldn't return it
G**N
It's pretty good
Had a starter rebuilt/repaired at local stater shop and the solenoid that came with it blew out in nothing flat. Bought this one and so far it's been working for over a year.
M**I
Exactly as described, good quality and great price.
Exactly as described, good quality and great price.
N**Y
Relay/solenoid for camper power
Works well and as expected
J**S
Great replacement
Works perfect not exact fit for omc oem solenoid have to drill new mounting holes
S**R
Ok for price
Ok.. not best quality. Get what you pay for. Like color
T**M
look well made
Work as they should. Wired up a pair to repair failed solenoids on my older 3 wire motor RV slide control system. Nice that control grounds through body so no additional ground wire needed.
V**R
It works well thus far!
My Yanmar 40hp inboard diesel was giving me starter fits. After replacing the starter and solenoid, still did not work - just "click". Then I removed the starter relay and discovered it was rusted out. Vancouver Outboard quoted a new starter relay switch at close to $400 and rush shipping charges. I paid $30 for this part and it can handle 200 amps. Works like a top so far.
Trustpilot
1 week ago
1 month ago