Hipa Ignition Coil for Kohler XT/XTX Engines — 1458404S Replacement with Spark Plug Included

HIPA 14-584-04-S ignition coil replaces Kohler 1458404S to restore spark for small engines used in lawn mowers and utility equipment.

This high-voltage ignition coil is designed as a direct replacement for Kohler part numbers 1458404S and 14-584-04-S and fits a range of XT and XTX series engines. The kit ships with one ignition coil and one spark plug, making it convenient for maintenance or field repairs. Built to mate with compatible flywheels and engine mounting points, it’s intended for common engine sizes such as 6.5, 6.75, and 7.75 horsepower models used across lawn tractors and utility machines.

Which engines and part numbers does this coil work with?

This coil is compatible with several Kohler XT and XTX engine variants and is labeled to replace 1458404S and its numeric variants. Cross-compatibility depends on the engine model and mounting configuration, so comparing the coil’s connector and mounting tabs to your original unit is advised.

• Replaces Kohler part 1458404S, 14 584 04-S, 14-584-04-S
• Fits XT675, XT775, XTX675, XTX775 series engines
• Works with XT149, XT173, XT650, XT800 and similar models
• Suitable for 6.5 Hp, 6.75 Hp and 7.75 Hp small engines

How do I install this ignition coil on my lawn mower?

Installation follows standard small-engine ignition coil replacement steps: disconnect the spark plug, remove the mower’s shroud or flywheel cover, unbolt the old coil, and fit the new unit in the same orientation. Ensure the air gap between coil and flywheel magnet meets the engine manufacturer’s specification for reliable spark timing.

• Includes one coil and one spark plug for immediate replacement
• Mount using existing bolt pattern and wiring harness
• Set correct air gap (refer to engine manual) before final tightening
• Reconnect spark lead and test for consistent spark

What performance and durability features should I expect?

The coil is designed to provide high-voltage output necessary to fire the spark plug across typical small-engine compression ranges. Construction uses insulated windings and a molded housing to resist vibration and typical outdoor operating conditions. While longevity depends on operating environment, correct installation and using recommended spark plugs help maintain reliable operation.

• Molded housing for vibration resistance
• High-voltage output for standard small-engine ignition systems
• Supplied with a matching spark plug for convenience
• Intended as a direct mechanical and electrical replacement

Will this coil work as part of a routine engine tune-up?

Yes — replacing the ignition coil and spark plug together is a common step in routine maintenance and troubleshooting misfires or weak starting. Swapping both components eliminates two of the most frequent ignition-related faults and can revive an engine that stumbles, sputters, or won’t maintain RPM.

• Pairs with the included spark plug to refresh ignition timing
• Clears common ignition faults caused by worn coils or fouled plugs
• Recommended when diagnosing hard-start or intermittent spark issues
• Simple field replacement for mower owners and technicians

Who this is for: This HIPA replacement ignition coil is aimed at homeowners, landscapers, and small-engine technicians who maintain Kohler XT/XTX series engines on lawn tractors, mowers, and utility equipment. It’s useful for anyone needing a ready-to-install substitute for Kohler 1458404S-style coils — particularly if you want a spare on hand or need to complete a quick tune-up in the yard or shop.