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The MaySpare Max Transient 200A Trombetta 12V Solenoid Relay is a heavy-duty, 3-terminal starter solenoid designed for 12V systems. Featuring a robust copper coil rated for high temperatures and a sealed, corrosion-resistant steel housing, it delivers reliable 200-amp current capacity ideal for automotive, marine, and industrial winch applications. Engineered for intermittent use with a recommended 5-minute duty cycle, it ensures consistent performance and longevity across diverse heavy-duty starting needs.
| ASIN | B0797WZBD9 |
| Best Sellers Rank | #6,293 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 1,051 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 |
K**N
Quality Starter Solenoid
Solid starter solenoid. Well built and seems to be of high quality. My tractor starts up very strong now!
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.
W**N
Works great.
Works great, used it on my riding mower.
P**.
Part
Looks to in good quality
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.
L**M
Dump Bed Solenoid
Worked great for my 98 Ram 3500 dump bed. Old solenoid went out and this one does great.
M**.
Not happy with it 😩
I bought this starter solenoid relay for my Massey Ferguson tractor 1year ago this month. It worked fine until today , it shorted out and caused my starter to keep spinning! I jumped off the tractor because the key would not shut it down… I was able to yank the battery cable off the post before my starter gave out. I know it’s only a $15.00 part but could have cost me a new starter. I just ordered another brand , hopefully it will last longer 🤞
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.
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
2 weeks ago
2 months ago