Wetenex Ignition Coil for Kohler CV/CH Engines — Single Coil with 345 mm Lead, Replaces 12-584-04-S

Wetenex replacement ignition coil for Kohler CV-series and compatible John Deere small engines restores reliable spark and ignition performance.

If your mower struggles to start, runs unevenly, or stalls, a worn ignition coil is often the cause. This Wetenex coil (compatibility: Kohler part numbers 12 584 01-S, 12-584-04-S and John Deere M133019) is designed to fit a wide range of Kohler CH and CV-series engines and select John Deere models. The unit ships as a single coil with 345 mm installation wire length and is intended as a direct-fit replacement to simplify repairs and reduce downtime.

Which engines and mower models will this coil fit?

This coil is engineered to match Kohler CH11S through CH15S and CV12.5S through CV15ST engines, plus Kohler 7000 series small engines. It also fits John Deere models such as the L110 and LT155 when they use the equivalent M133019 ignition part. Confirm part numbers and engine model before ordering to ensure compatibility.

• Compatible Kohler part numbers: 12 584 01-S and 12-584-04-S.
• Fits Kohler CH11S–CH15S and CV12.5S–CV15ST engines.
• Works with Kohler 7000 Series small engines.
• Replaces John Deere M133019 for L110 and LT155 mowers.

How do I install the Wetenex ignition coil, and what tools will I need?

Installation is straightforward for anyone comfortable with basic lawn mower maintenance. You will typically remove the engine shroud, disconnect the old coil’s high-tension lead and mounting screws, then install the new coil with the same mounting points and gap settings.

• Tools: socket set, screwdriver, feeler gauge, spark plug wrench.
• Wire length: 345 mm installation lead for proper reach to the spark plug.
• Set the coil-to-flywheel air gap per engine manual (use a feeler gauge).
• Reconnect ignition lead and test by cranking engine after reassembly.

What performance and durability can I expect from this replacement coil?

The coil is built to deliver a consistent high-voltage pulse to the spark plug, improving starting reliability and stable idling when installed correctly. While it’s not an OEM-specified guarantee, this aftermarket unit meets common fit-and-function expectations for small-engine ignition coils.

• Delivers steady spark for reliable starts and smoother running.
• Designed for small-engine duty cycles typical of lawn tractors.
• Corrosion-resistant terminals for longer service life.
• Packaged as one ignition coil for single-engine replacement.

Are there any measurement or installation details I should verify before buying?

Yes — check the existing coil’s part number and the install wire length against the listing to avoid a mismatch. Also verify mounting hole pattern and the required air gap between coil and flywheel to ensure proper installation and ignition timing.

• Installation wire length: 345 mm — confirm this reaches your spark plug lead.
• Compare mounting holes and bracket shape to your original coil.
• Verify engine model and OEM part number before purchase.
• Follow engine manual for coil-to-flywheel gap specification.

Who is this for? This Wetenex ignition coil is aimed at lawn mower owners, small-engine repair shops, and DIY mechanics who need a cost-effective, direct-fit replacement for Kohler CH and CV-series engines and compatible John Deere L110/LT155 models. If you want a straightforward swap to restore ignition performance without sourcing an OEM part, this coil is a practical option — just confirm compatibility with your engine’s part number and mounting details before ordering.