Savior Ignition Coil Module for Kohler Courage SV-Series Engines SV470–SV620 — Direct Replacement with Spark Plug

The Savior 20 584 01-S ignition coil module is a direct-replacement ignition assembly designed to restore reliable spark to Kohler Courage SV-series small engines.

If your lawn tractor or riding mower with a Kohler SV-series engine is misfiring, hard to start, or runs inconsistently, a faulty ignition coil module is a common culprit. The Savior 20 584 01-S (also cross-referenced as 20-584-03-S and 20-584-04-S) is built to match factory fit and function for many Kohler Courage models and selected Troy-Bilt/Huskee machines using the same engines. Each package contains one ignition coil and one spark plug, plus a limited four-month warranty against manufacturing defects.

Which engines and models is this module compatible with?

This coil module is intended for Kohler Courage SV-series engines used across multiple mower and tractor models. It fits popular variants where the OEM part numbers match or are cross-referenced to 20-584-03-S, 20-584-01-S, or 20-584-04-S.

• Compatible Kohler engines: SV470, SV480, SV530, SV540, SV541, SV590, SV591, SV600, SV601, SV610, SV620
• Common equipment: lawn mower tractors and riding mowers using Kohler Courage engines
• Also suits some Troy-Bilt / Huskee riding tractors with these Kohler engines
• Works with engine chassis codes LTX1040 and related models 74360, 74363, 74370, 74380, 74391

How will swapping to this Savior ignition coil improve engine performance?

Replacing a worn or damaged coil restores the ignition system’s ability to generate a strong, consistent spark so the engine starts easily and runs smoothly. Proper spark timing and strength reduce misfires, hesitation, and inefficient combustion.

• Delivers a renewed high-voltage pulse for reliable ignition under load
• Reduces starting issues and rough idling associated with bad coils
• Helps stabilize throttle response and engine RPM stability
• Includes a fresh spark plug to complement the new coil for improved ignition

What should I check before ordering the coil module?

Confirm your engine model and OEM part number before purchase to avoid fitment issues. Visually compare the mounting points, wire connectors, and the coil’s physical dimensions with your original part to ensure compatibility.

• Verify your engine model (SV470–SV620 family) on the engine label
• Match existing part numbers to 20-584-03-S, 20-584-01-S, or 20-584-04-S
• Inspect connector type and bolt locations for a direct swap
• Have basic tools and safety gear ready for a straightforward replacement

What comes in the package and what warranty is provided?

Each sale includes one ignition coil and one spark plug, packaged to get your engine back to service quickly. Savior backs this part with a four-month warranty covering manufacturing defects—keep your purchase information for any warranty claims.

• Package contents: 1 ignition coil module + 1 spark plug
• Cross-replacement numbers included for easy identification
• Four-month limited warranty against product defects
• Recommendation: verify engine and part numbers before ordering

Who is this for: This Savior coil module is aimed at owners and technicians maintaining Kohler Courage small engines in lawn tractors, riding mowers, or equipment that use SV-series engines—especially those experiencing hard starts, inconsistent running, or intermittent misfires. It's also suitable for DIY mechanics and service shops that want a cost-effective, compatible replacement part that includes a new spark plug and short-term warranty coverage.