

⚡ Upgrade your start game with unstoppable power and lasting durability!
The Upgrade Max 300A 12V solenoid features a robust 300A transient current capacity with a 14Ω coil resistance and nickel-plated cover for superior rust protection. Designed for golf carts, winches, and marine heavy-duty applications, it offers precise bracket mounting and copper contacts for reliable, long-lasting performance. Ideal for professionals seeking dependable starter solenoids with environmental compliance and proven durability.




| ASIN | B0B93J9ZX2 |
| Best Sellers Rank | #4,620 in Automotive ( See Top 100 in Automotive ) #1 in Automotive Replacement Starter Solenoids |
| Brand | MaySpare |
| Coil Resistance | 14 Ohms |
| Coil Voltage | 12 Volts (DC) |
| Connector Type | Through Hole |
| Contact Current Rating | 300 Amps |
| Contact Material | Copper |
| Contact Type | Normally Open |
| Current Rating | 300 Amps |
| Customer Reviews | 4.3 4.3 out of 5 stars (2,793) |
| Date First Available | August 9, 2022 |
| Item Weight | 13 ounces |
| Item model number | XR-2061 |
| Manufacturer | May Spare Parts |
| Manufacturer Part Number | US-AUTO4T |
| Minimum Switching Voltage | 12 Volts (DC) |
| Model | XR-2061 |
| Mounting Type | Screw Mount |
| Operation Mode | Automatic |
| Package Dimensions | 4.25 x 3.15 x 3.03 inches |
| Specification Met | Oem, Environmental Compliance |
| Wattage | 10.2 watts |
M**1
Working great on my Exmark.
Installed this on an Exmark with a Briggs & Stratton engine. Working great but the mounting holes in the feet seem too close under the bigger cables. It was a bit tight to tighten the nuts.
J**Y
Good relay for cheap
Nice relay for snow plow and cheap. Is holding up nice for about 25 driveways now.
K**N
Stupid dues paid for this replacement
Bought this replacement for a perfectly good one that I had on my JCB for years, one that I ruined by being stupid. The new one is a heavy duty one 200amp that is exact replacement that got here super quick. If it works like the one I stupidwrecked I will be most happy.
M**K
ground the other small wire
worked as it should,the two small wires one is what i call the trigger wire and the other Must be grounded.
L**T
Great Service
Great Product & Great Service
C**R
Short use and fear of fire
I purchased this product because I needed a continuous duty solenoid to keep two 12v batteries wired in parallel charged while driving the vehicle but not engaged while the engine is off, so my engine battery would not lose its charge because of the two house batteries draining it without my knowledge. It took some time to install the system and get my Chevy cargo van ready for some distance camping. But even before I left town, I discovered that the solenoid was getting hotter than I could even touch and my automatic breaker kept cycling. The odd thing was that I didn't have my inverter turned on nor any of my inside lighting (which wouldn't have been much). The only thing that was going on was the solenoid providing power from the alternator to keep the two house batteries charged. Nothing on the device indicates it's a continuous duty device and nothing on the device indicates the rated amperage. I'm quite disappointed that the device I purchased didn't even last for a single camping trip but gave me enough unrest, over perhaps suddenly bursting into flames, that I disconnected the device. And since I purchased the device June of 2019 and it's now August of 2020, I can't even return it for a refund. So, it's a total bust and I would caution other buyers to be aware and make certain you thoroughly check it out before getting into a desolate area and finding that it's just not what it should be.
J**O
Selenoid
When install this solenoid i was shock it performed so well/ recomend
P**W
Good deal
As described
J**S
Works perfect not exact fit for omc oem solenoid have to drill new mounting holes
T**M
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.
S**R
Ok.. not best quality. Get what you pay for. Like color
V**R
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.
F**T
De tres bonne qualité
Trustpilot
4 days ago
2 months ago