MaySpare 12V Starter Solenoid — 300A Peak Nickel-Plated Heavy-Duty Replacement for Golf Carts & Winches

MaySpare Upgrade Max 300A Peak 12V starter solenoid — a nickel-plated, heavy-duty replacement designed for golf carts, winches and marine starters that delivers up to 300A transient current with a recommended continuous rating under 150A.

Built for rugged starting tasks, this MaySpare solenoid pairs a high-temperature 180°C copper coil with nickel plating to resist corrosion and extend service life in outdoor and marine environments. It replaces several OE part numbers and fits common bracket and mounting patterns, making it a direct swap for many 12V starter systems. The unit is a single-pole, single-throw (SPST) normally open solenoid optimized for short starter duty cycles with clear usage limits and mounting hole specifics for straightforward installation.

What exactly does this solenoid replace and fit?

This unit is built as a drop-in replacement for a range of original equipment parts and uses a straight mounting bracket. It follows common starter solenoid dimensions and terminal configurations to ease installation across multiple vehicle and equipment types.

• Compatible replacements: 70-111224, 3635820, 1114208, 1114218, 1114223, 1114534, 1114547.
• Bracket: Straight with mounting holes at 5/16 x 19/32 and center spacing 2-13/64 inches.
• Terminal/Contact: Normally Open (NO), SPST one-circuit design (Off–On).
• Intended for 12V starter duty cycles (not continuous heavy-duty contactor use).

How much current can it handle and what are the operating limits?

The solenoid is rated to handle a maximum transient current of 300A, ideal for initial motor cranking, while the recommended continuous working current is below 150A to prevent overheating. Follow the suggested duty cycle to preserve internal plastic components and ensure reliable operation.

• Peak/Transient current: up to 300A.
• Recommended continuous current: under 150A to avoid damage.
• Resistance: 14Ω and coil capacity ~10.2W.
• Suggested hold/start time: about 5 minutes with cool-down between starts.

What materials and construction features improve durability?

MaySpare uses a 180°C-rated copper wire for the coil and a nickel-plated cover that meets environmental plating requirements, which together reduce corrosion and improve heat tolerance. The design focuses on starter-duty reliability rather than continuous industrial switching.

• Coil: high-temp 180°C copper wire for thermal resilience.
• Cover: nickel-plated finish resists rust and environmental wear.
• Contacts: two copper points for robust conductivity.
• Environmental plating to reduce corrosion in outdoor/marine use.

Are there special handling or installation warnings?

Yes—this solenoid is intended for starting cycles rather than sustained continuous operation. Excessive mechanical force or prolonged activation can damage internal plastics and cause the unit to stick, so follow torque and usage guidelines during installation and operation.

• Do not exceed 5N of force on moving parts to avoid breaking internal plastic.
• Recommended starter hold time: about 5 minutes, then allow cooling before reuse.
• If you need long continuous operation, contact seller for suitable alternatives.
• Ensure proper mounting using specified hole spacing for safe installation.

Who is this for? This MaySpare solenoid is aimed at owners and technicians servicing golf carts, small marine craft, winches, and similar 12V starter systems who need a corrosion-resistant, high-transient-current replacement. It suits DIY mechanics and shop professionals seeking a dependable starter solenoid that matches common OEM part numbers and mounting patterns. If your application requires prolonged continuous switching beyond starter cycles, consider a purpose-built contactor or consult us for alternatives tailored to long-duty use.