PARTSRUN Ignition Coil for Kohler KT & SV Series Engines — Fits KT715/KT725/KT740, Restores Reliable Spark

PARTSRUN ignition coil designed to replace Kohler part numbers 2458445S, 2458401S, 32 584 06-S, 20-584-03-S — a direct-fit coil for many Kohler KT and SV series mower engines.

If your Kohler-powered lawn mower is sputtering, hard to start, or losing power, the ignition coil is a common wear item. This PARTSRUN coil is manufactured as a compatible replacement for several Kohler OEM references and fits a range of small engines including KT715, KT725, KT740, KT610 and the SV470–SV590 and ZT720–ZT730 families. It’s engineered to restore reliable spark delivery and help the engine start consistently when installed correctly.

How do I know this coil fits my Kohler engine?

Match the PARTSRUN coil to your engine by checking the OEM part numbers and engine model stamped on the engine housing. This unit is intended as a compatible replacement for Kohler numbers 2458445S, 2458401S, 32 584 06-S and 20-584-03-S and fits common KT, SV, ZT, and 7000-series engines.

• Check your engine model: KT715, KT725, KT740, KT610 and similar series.
• Confirm OEM part number from old coil to ensure interchangeability.
• Compare mounting holes and electrical connector orientation before installation.

What performance improvements can I expect after replacing the coil?

Replacing a worn or failed coil helps restore consistent spark timing and stronger ignition, which typically translates to easier starting and steadier idling. While it won’t change engine power ratings, it helps the engine run as designed when the coil was functioning properly.

• More reliable starts, fewer backfires and less stalling.
• Smoother idle and steadier throttle response under load.
• Reduced misfires and easier cold starts when properly gapped and installed.

How difficult is installation and what tools are needed?

Installation is straightforward for most DIYers familiar with small engines; basic hand tools and attention to ignition timing are required. Remove the engine cover, detach the old coil, transfer or set the correct air gap, and secure the new coil following the engine manufacturer’s torque and gap specs.

• Typical tools: socket set, screwdriver, feeler gauge, torque wrench.
• Important: set the air gap to the engine’s specified clearance for proper function.
• Disconnect the spark plug for safety before starting work.

Will this coil work with electronic flywheel or magneto systems?

This PARTSRUN coil is built as a replacement for Kohler’s ignition systems on the listed models and is compatible with standard flywheel magneto arrangements used on those engines. Verify your model’s ignition configuration and wiring before ordering to ensure electrical compatibility.

• Compatible with typical magneto-style flywheel systems on Kohler KT and SV series.
• Check connector type and wiring layout to match your original coil.
• When in doubt, compare the old coil’s mounting pattern and electrical leads to this replacement.

Who is this for: This PARTSRUN ignition coil is aimed at lawn care professionals, small-engine mechanics, and homeowners who maintain Kohler-equipped mowers and need a reliable, cost-effective replacement. It’s best for users who can identify OEM part numbers, perform basic engine maintenance, and follow safety steps during installation. If you want to restore dependable starting and running behavior on KT-, SV-, ZT- or 7000-series Kohler engines without sourcing an OEM unit, this coil offers a practical aftermarket option.