Starter Relay Solenoid For MTD Cub Cadet 725-04439B 725-04439A 725-04439 435151

Starter Relay Solenoid for MTD Cub Cadet

This starter relay solenoid is a replacement electrical component that engages the starter motor on compatible MTD and Cub Cadet machines, cross-referencing OEM part numbers 725-04439B, 725-04439A, 725-04439, and 435151.

Overview

This starter relay solenoid is a replacement switch that delivers battery current to the starter motor when the key is turned. It is built to match the function of the original relay on many MTD and Cub Cadet mowers and tractors. This starter solenoid is a practical fix for machines that click but will not crank.

Built For Performance

• Replaces OEM part numbers 725-04439B, 725-04439A, 725-04439, and 435151
• Relay design handles repeated starter engagement cycles
• Direct-fit terminal layout matches the original mounting position
• Durable housing protects internal contacts from vibration
• Straightforward two-wire style connection for most applications

Fits These Machines

• for MTD lawn tractors and riding mowers using 725-04439 series relays
• for Cub Cadet riding mowers and tractors using 725-04439 series relays
• for MTD and Cub Cadet equipment that lists 435151 as the starter relay

On-The-Job Use

• Restoring starter engagement on riding mowers that will not crank
• Replacing a failed relay on MTD and Cub Cadet tractors
• Routine electrical repair during seasonal maintenance
• Getting equipment back in service for mowing and yard work

Specs At A Glance

Good To Know

Q: How do I know if my relay is bad? A: A common sign is a single click with no crank when the key is turned, even with a charged battery. Testing the relay terminals with a multimeter confirms whether it is passing current.

Q: Is this an original manufacturer part? A: This is an aftermarket replacement relay built to match the listed OEM part numbers. Always compare your old relay and part number before ordering.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.