

⚡ Start Strong, Stay Smooth – The Solenoid That Means Business
The Max 300A Heavy Duty Solenoid Relay is a nickel-plated, 12V DC starter solenoid designed for golf carts, winches, and marine applications. Featuring a robust 300A transient current capacity and precision copper contacts, it offers reliable, rust-resistant performance with easy OEM replacement compatibility. Engineered for short bursts with a cool-down period, it ensures durable and efficient starting power.











| ASIN | B072MZHK48 |
| Best Sellers Rank | #5,613 in Automotive ( See Top 100 in Automotive ) #1 in Automotive Replacement Starter Solenoids |
| Brand Name | MaySpare |
| Coil Resistance | 14 Ohms |
| Coil Voltage | 12 Volts |
| Connector Type | Screw |
| 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 (2,841) |
| Manufacturer | MaySpare |
| Minimum Switching Voltage | 12 Volts (DC) |
| Mounting Type | 2 hole mount flange |
| Operation Mode | Automatic |
| Part Interchange Info | 3635820, 1114208, 1114218, 1114223, 1114534, 1114547,612905 |
| Part Number | CA-JD4T300A |
| Specification Met | Mayspare Quality Standard |
| Wattage | 10.2 watts |
D**.
VTX1800
Used to replace the oe solenoid for my vtx1800. That bike has eaten 5 in 15 years with the genuine Honda part lasting a few years vs the 1-2year Amazon specials. This style fortunately uses a cable ground, so your kickstand and neutral safeties still function. Fits neatly in the oe location, and handles the in-rush current like a champ. Faster cranks than the tiny solenoid could handle. Time will tell
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.
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.
M**R
Good value
Replacement for a continuous solenoid on an electric golf cart. If you have a gas golf cart and you need to replace the “starter” solenoid, this is not the type you want. They function quite differently and are not interchangeable
D**R
Happy customer
Fair price,good quality product
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.
M**I
Exactly as described, good quality and great price.
Exactly as described, good quality and great price.
J**.
Works
Easy install
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
N**Y
Works well and as expected
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.
Trustpilot
3 weeks ago
3 weeks ago