108-5349-00 Starter Solenoid Compatible with MTD Cub Cadet Bad Boy ZT CZT MZ Ariens Zero Turn Lawn Mowers Solenoid 3 Terminal 12V Replace# 925-0771 925-1426A 925-1426 03057700 725-1426 725-0771

What It Is

This is a 12V, 3-terminal starter solenoid (part # 108-5349-00) that acts as a relay between your battery and starter motor. It’s designed for MTD, Cub Cadet, Bad Boy, Ariens, and similar zero-turn mowers—any machine that needs a reliable electrical connection to crank the engine.

Fitment & Compatibility

Before buying, check these three things:

• Terminals: Must be a 3-terminal (small spade + large stud) configuration. Measure your old solenoid’s mounting hole spacing—this one uses two 10mm bolts on a standard 2.5-inch center-to-center pattern. If yours is different, it won’t bolt in.
• Voltage: Confirmed 12V only. Not for 6V or 24V systems.
• OEM cross-references: Replaces Cub Cadet/MTD # 925-0771, 925-1426A, 925-1426, 03057700, 725-1426, and 725-0771. If your mower uses any of these, this solenoid is a direct swap. Also fits many Bad Boy ZT, CZT, MZ, and Ariens zero-turn models.
• Physical size: Roughly 2.5” x 1.5” x 1.5”. Ensure clearance in your battery/engine compartment—some tight frames may require a shorter solenoid.

Pro check: Test your old solenoid with a multimeter (continuity between large terminals when small terminals are powered). If it clicks but doesn’t pass current, this replacement will fix it.

Key Things to Know

• Quality: Budget-friendly aftermarket part. Several reviews note it works fine for occasional use, but a few report premature failure under heavy cranking (e.g., cold starts on larger engines). If you mow commercially, consider a premium OEM solenoid.
• Installation: Easy—disconnect battery negative, remove two bolts, swap wires one at a time (note: small terminal polarity doesn’t matter, but large terminals must match battery/starter cables). Takes 10 minutes.
• Gotcha: The mounting bracket is thin metal. Don’t overtighten bolts—just snug. Over-torquing can crack the plastic housing or strip threads.
• Wiring tip: If your old solenoid had a diode or resistor across the small terminals, this replacement may not include it. That’s fine for most mowers, but check your manual—some OEM designs rely on it for noise suppression.

Should You Buy It

If you need a cheap, functional replacement for a non-commercial zero-turn mower and you’ve confirmed the 3-terminal layout and 2.5-inch bolt spacing, this solenoid will get you back to cutting grass. Skip it if you run a high-hour commercial mower or want a part with a longer warranty—spend a few more dollars on a name-brand unit.