Ignition Switch 925-04228 Fit for Cub Cad et Mower - 3 Position Key Switch Compatible with Cad RZT-42 RZT-50 RZT-54 Riding Mower, Troy-Bilt Mustang XP 42 50 54 Zero Turn Mower, Replace 725-04228

What It Is

This is a 3-position ignition switch (Off/Run/Start) designed for Cub Cadet RZT and Troy-Bilt Mustang XP zero-turn mowers. It replaces OEM part 725-04228 and controls power to the engine, safety circuits, and starter solenoid.

Fitment & Compatibility

Before buying, verify these three things:

1. Model & deck size: Confirmed fit for Cub Cadet RZT-42, RZT-50, RZT-54 and Troy-Bilt Mustang XP 42, 50, 54. Does not fit older Cub Cadet LT or GT garden tractors with different key patterns.
2. Terminal layout: This switch has 5 flat spade terminals (B, S, A1, A2, G). Count your existing switch terminals—if yours has 4 or 6 terminals, this won’t work without rewiring.
3. OEM cross-reference: Direct replacement for 725-04228. If your current part number is different, measure the switch body (approx. 1.5" diameter) and shaft length (0.75") to confirm physical fit.

Key Things to Know

• Quality: Rated 4.6/5 with 291 reviews. Most users report it’s a solid OEM-equivalent at half the price of dealer parts.
• Installation: Easy DIY—unplug the old switch, remove the retaining nut, swap in the new one, and reconnect the harness. No special tools needed.
• Common gotcha: The key is not included with some aftermarket versions. Check the listing to confirm a key comes with the switch.
• Safety interlock: If your mower won’t start after replacement, double-check that the parking brake and blade engagement are in the correct positions—the switch won’t bypass safety circuits.

Should You Buy It

If you own a Cub Cadet RZT or Troy-Bilt Mustang XP zero-turn and your ignition switch is failing (hard to turn, intermittent start, or dead), this is the right fix. It’s a cheap, direct swap that avoids a dealer trip. Skip it if you have a different brand or a non-zero-turn model—fitment is narrow.