YAMAKATO ignition coil replacement kit for Briggs & Stratton 2-pack with spark plugs & air-gap gauge

YAMAKATO ignition coil replacement kit includes two aftermarket coils with spark plugs and an air-gap gauge designed to restore spark performance on compatible Briggs & Stratton and other small engines.

If your lawn mower, generator, or outboard engine is misfiring, hard to start, or has suddenly lost spark, a worn or damaged ignition coil is often the culprit. This YAMAKATO kit is built to fit a wide range of Briggs & Stratton part numbers (591459, 492341, 490586 and others) and many Toro, Craftsman, Vanguard, and portable generator models. Each order ships as a pack of two coils in bubble-bag packaging and includes two spark plugs plus an air-gap gauge to help you set correct electrode clearance during installation.

Which engines and part numbers does this coil replace?

This aftermarket coil is compatible with numerous Briggs & Stratton engine families and related OEM references. It’s commonly used as a replacement for multiple part numbers across small engine applications, making it a versatile spare for repair kits.

• Direct replacements: Briggs & Stratton part numbers 591459, 492341, 490586, 491312, 495859, 690248, 715231.
• Fits engine model ranges: 12-series engines (12B600, 12C600, 12D600, 12A800, 12B800, 12C700, 12C800, 12D800) and 129H00 series.
• Also matches many Toro, Craftsman, Vanguard and portable generator models listed in specifications.

How easy is it to install and what’s included in the package?

Installation requires basic hand tools and a simple adjustment of the air-gap using the included gauge. The pack-of-two format covers dual-coil engines or provides a spare for future service.

• Included: two YAMAKATO ignition coils, two spark plugs, one air-gap gauge; packaged in protective bubble bags.
• Tools typically needed: socket set, screwdrivers, feeler gauge (if preferred), and torque wrench for spark plug seating.
• Tip: disconnect the battery or fuel source and follow engine manufacturer instructions for safe coil replacement.

Will this aftermarket coil affect warranty or emissions certification?

This YAMAKATO coil is an aftermarket replacement and not an OEM-supplied component from engine manufacturers. Buyers should verify compatibility with local emissions rules and any existing equipment warranties before installation.

• Not an OEM part: consult your engine manufacturer for warranty guidance prior to installation.
• Check CARB or local emissions requirements if your equipment must meet certified components.
• If in doubt, contact a certified service technician to confirm suitability for your model.

How can I confirm this coil is right for my mower or generator?

Compare the part numbers and engine model listings in your owner’s manual against the compatibility details provided. Visual inspection of the original coil’s mounting, connector style, and dimensions will help ensure a proper fit.

• Match part numbers stamped on the old coil or listed in the parts diagram of your manual.
• Confirm connector types and mounting hole spacing before installation.
• Review the included images and specifications or consult a dealer if uncertain.

Who this is for: The YAMAKATO ignition coil kit is suited to homeowners, landscapers, and small-engine technicians who maintain Briggs & Stratton-based mowers, Toro tractors, Craftsman units, Vanguard OHV engines, portable generators, and select outboard motors. It’s a practical choice for anyone needing a ready-to-install coil replacement or a spare part to keep equipment running reliably between professional services. Remember to verify model compatibility and any warranty or emissions considerations before purchasing.