Genuine OEM Trombetta 12V Starter Solenoid 108-5349-00 Relay Kit for Bad Boy Zero Turn Lawn Mowers – MZ Magnum 54, CZT, ZT Elite, Compatible with Kohler 7000 Series Parts & Accessories

What It Is

This is a genuine OEM Trombetta 12V starter solenoid relay kit (part #108-5349-00) designed to handle the high current required to engage the starter motor on Bad Boy zero turn mowers. It’s a direct replacement for the factory solenoid on models like the MZ Magnum 54, CZT, and ZT Elite, and also works with Kohler 7000 Series engines.

Fitment & Compatibility

Before buying, confirm your mower uses a 12V electrical system and the solenoid has two large terminal posts (for battery and starter) plus two small spade terminals (for the ignition trigger). Measure your existing solenoid’s mounting hole spacing – this unit uses a standard 3-inch center-to-center pattern. It fits Bad Boy models with Kohler 7000 Series engines (e.g., Command Pro, Courage) but not older Kohler or Kawasaki models with different solenoid shapes. Check your OEM part number – if it’s 108-5349-00 or a cross-reference (like Trombetta 304-108-5349-00), this is the correct match. Avoid aftermarket “universal” solenoids that may have different terminal layouts or lower amp ratings.

Key Things to Know

• Quality: Genuine Trombetta – built for continuous-duty cycling and sealed against moisture/debris. Much more reliable than generic $8 solenoids.
• Installation: Simple swap – disconnect battery negative first, remove two mounting bolts, unplug wires, reverse order. Takes 15-20 minutes with basic hand tools.
• Common gotcha: The small trigger wires are often fragile – use dielectric grease on terminals to prevent corrosion. If your mower has a plastic housing, ensure the solenoid’s metal case doesn’t short against it.
• Testing: If your mower clicks but won’t crank, test the solenoid by jumping the two large terminals with a heavy screwdriver (engine off, key on). If it cranks, the solenoid is bad.

Should You Buy It

If your Bad Boy zero turn (MZ Magnum, CZT, or ZT Elite) with a Kohler 7000 Series engine has a dead starter solenoid – no crank, only a click or nothing – this genuine OEM part is the right fix. It’s priced competitively with aftermarket units but offers guaranteed fit and better reliability. Skip it if your mower uses a different engine brand or an older-style solenoid with non-standard mounting.