MaySpare 12V Starter Solenoid 300A Peak Nickel-Plated — Heavy-Duty Golf Cart/Winch Replacement, 180°C Coil

MaySpare Upgrade Max 300A Peak 12V nickel-plated starter solenoid delivers reliable heavy-duty switching for golf carts, winches, and marine use.

This compact, nickel-plated 12V solenoid is built for high transient loads and resistant environments. With a peak transient capability of 300A and a recommended continuous use under 150A, it replaces a wide range of OEM starter solenoids and uses durable 180°C copper coil winding to withstand high-heat starts. The nickel finish helps prevent corrosion and keeps contact surfaces bright, while the normally-open (NO) contacts and single-pole single-throw (SPST) design make it straightforward to install in starter circuits.

What electrical specifications should I expect from this solenoid?

The solenoid features a 14Ω coil resistance and an effective coil capacity of 10.2W at 12VDC. It uses two copper contact points in a normally-open arrangement and is designed for brief high-current starts rather than continuous heavy loading.

• Coil resistance: 14Ω, capacity 10.2W at 12VDC
• Peak transient current: up to 300A
• Recommended continuous current: under 150A
• Contact configuration: Normally Open (NO), SPST

How durable is the solenoid in marine or corrosive environments?

The housing receives an environmentally compliant nickel plating that resists rust and maintains a clean appearance over time. Internally, the coil uses 180°C-rated copper wire for thermal durability during repeated start cycles, but users should follow duty-cycle guidance to avoid overheating.

• Nickel-plated cover for corrosion resistance
• 180°C copper coil winding for heat tolerance
• Meets environmental plating requirements to reduce rusting
• Recommended cool-down periods to protect internal plastic parts

Will this replace my existing solenoid and how is it mounted?

This unit is a direct-fit replacement for several OEM part numbers and includes a straight bracket with standard mounting hole spacing. It supports common starter solenoid roles on golf carts, winches, small marine engines, and other 12V systems where a normally-open SPST starter relay is required.

• Compatible replacements: 70-111224, 3635820, 1114208, 1114218, 1114223, 1114534, 1114547
• Bracket style: straight with holes 5/16 x 19/32, 2-13/64" on center
• Wiring: two copper contact points plus coil terminals for simple hook-up
• Function: Off–On starter solenoid action during engine starting

Are there operating limits or special handling tips?

Because this is a starter solenoid designed for short-duration engagement, avoid exceeding the recommended mechanical and electrical limits. Excessive force on the actuator or prolonged continuous current can damage internal plastics or overheat the coil; observe hold times and allow cool-down between starts.

• Do not apply mechanical force above 5N to the actuator to avoid internal damage
• Recommended hold/start time: up to 5 minutes followed by cool rest
• If continuous long-duration operation is required, contact the seller for a heavy-duty variant
• Designed primarily as a starter solenoid, not as a continuous-duty contactor

Who is this for? Technicians, fleet owners, and DIYers who maintain golf carts, small marine craft, ATVs, or winches will find this MaySpare solenoid a practical replacement when a reliable, corrosion-resistant starter relay is needed. It’s suited to projects that require a simple SPST starter action with strong transient current capability, provided users respect the duty-cycle limits and mounting specifications. If your application demands continuous heavy current or sustained engagement, consider a contactor rated for continuous duty or contact us for alternative recommendations.