RANSOTO Ignition Coil Module for Kohler KT740 KT745 ZT740 – Direct-Fit Replacement, Plug-and-Play Upgrade

RANSOTO Ignition Coil Module is a direct-fit replacement for Kohler KT740, KT745 and ZT740 engines, restoring strong spark and reliable starts.

This RANSOTO coil module is engineered to match the electrical and mounting specifications of Kohler part numbers 32-584-09-S, 32-584-24-S, 32-584-25-S and 3258425 so you can replace a worn or damaged ignition coil without modifying the engine. Built for plug-and-play installation, it raises ignition energy to improve combustion consistency and smoother running. The unit is intended for small-engine applications including zero-turn mowers and commercial walk-behind equipment that use the KT740/KT745/ ZT740 families.

How will this coil affect starting and running performance?

Installing the RANSOTO coil can produce a stronger, more consistent spark which helps the engine start more quickly and idle more steadily. It doesn’t alter fuel delivery or engine timing; it optimizes the ignition side of combustion for existing engine settings.

• Restores spark intensity to factory-like levels for quicker cranking.
• Reduces misfires and rough idling caused by weak coils.
• Designed to meet OEM electrical and mounting specs for a proper fit.

Is installation difficult and what tools are needed?

Installation is designed to be straightforward: this is a plug-and-play replacement with the same bolt pattern and connector type as the specified Kohler originals. Basic hand tools and a safe workflow—battery disconnected, spark plug wire isolated—are all that’s required for most competent DIYers or service technicians.

• Matches OEM mounting holes and terminal layout for simple swap-out.
• No rewiring or external modification required when replacing listed part numbers.
• Typical install time: 20–40 minutes depending on equipment access.

Which Kohler models and part numbers are compatible?

The RANSOTO module is compatible with Kohler KT740, KT745 and ZT740 engines and replaces several common OEM references. Confirm compatibility by matching engine model and part reference before ordering.

• Compatible engine models: Kohler KT740, KT745, ZT740.
• Replaces OEM numbers: 32-584-09-S, 32-584-24-S, 32-584-25-S, 3258425.
• Fits applications like zero-turn mowers and commercial small engines using those Kohler families.

What warranty or support does RANSOTO provide?

RANSOTO offers after-sale support and a warranty process for products that arrive damaged or deformed. If the coil arrives compromised, contact customer service to arrange evaluation and warranty service for replacement or refund as applicable.

• Warranty covers shipping damage and manufacturing defects reported on receipt.
• Customer message support available to initiate warranty service.
• Packaging inspection on arrival recommended to speed claims processing.

Who is this for: The RANSOTO Ignition Coil Module is aimed at homeowners, landscapers and small-engine technicians who maintain Kohler KT740/KT745/ ZT740-equipped equipment and need a reliable, cost-effective replacement for failing ignition modules. Choose this unit if you want a plug-and-play substitute for the listed Kohler part numbers that restores spark performance, reduces misfires, and avoids engine downtime without significant installation effort.