HZ Ignition Coil replacement for Briggs & Stratton 594626/595304 – direct-fit, OEM-spec spark repair

HZ ignition coil model 594626/595304 is a direct-fit aftermarket replacement designed to restore spark to compatible Briggs & Stratton and MTD small engines.

This HZ ignition coil replaces a wide range of Briggs & Stratton original part numbers (594626, 594456, 595304, 592841, 595038, 799650, 795315 and others) and fits many MTD, Troy-Bilt, Cub Cadet, Craftsman and John Deere lawn and garden machines. It’s manufactured to match the electrical and mounting specifications of the original modules so you can get a reliable spark, easier starting, and consistent running performance when the OEM coil has failed. Below are practical answers to common buyer questions, with specific fit and installation details to help you confirm compatibility before purchase.

Will this HZ coil work with my Briggs & Stratton engine?

Most likely yes if your engine lists one of the OEM numbers above or appears in the compatibility set. The HZ coil was produced to cover numerous 9–21+ horsepower Briggs & Stratton engines used across mowers and walk-behind equipment. Always cross-check your engine model or existing coil part number to ensure a match.

• Direct fit for OEM numbers: 594626, 594456, 595304, 592841, 595038, 799650, 795315.
• Works with many engine sizes from about 9 hp up to 21+ hp.
• Compatible with MTD, Troy-Bilt, Cub Cadet, Craftsman, John Deere models that use these OEM coils.

How does installation typically proceed?

Installation is straightforward for anyone comfortable removing a small engine ignition module. The HZ coil matches OEM mounting holes and electrical terminals so the process requires standard hand tools, testing spark with a plug-gap tool, and setting the correct air gap if specified by your engine manual. If you’re unsure, a brief service manual check or a local small-engine shop can confirm final steps.

• Remove engine shroud, disconnect spark plug and old coil wiring.
• Mount new coil using original bolts; set air gap per engine spec.
• Reconnect kill wire and high-tension lead to spark plug, then test start.

What performance or compatibility details should I expect?

The HZ coil is built to meet OEM electrical output and fit tolerances so it should restore normal ignition timing and spark energy. It’s not a performance upgrade but a dependable replacement for worn or cracked coils that cause misfires, hard starting, or no-start conditions. Using the correct coil ensures the engine runs smoothly across idle and load conditions.

• Designed to match original spark output and mounting configuration.
• Intended as a like-for-like replacement, not a high-performance module.
• Suitable for a wide list of engine models and mower brands referencing the same OEM part numbers.

Which models and equipment are known to accept this coil?

This HZ coil fits a long list of Briggs & Stratton-equipped machines and engine families, including common walk-behind and riding mower models. Fitment includes engines used in MTD, Husqvarna, Troy-Bilt, Cub Cadet, Craftsman, Gravely and John Deere equipment when their parts list cites one of the compatible OEM numbers. Always confirm the exact part number stamped on your old coil or in your engine manual to avoid mismatch.

• Fits MTD/Troy-Bilt/Cub Cadet/Craftsman walk-behind and riding mower engines.
• Compatible with John Deere parts LG492341 and LG495859 where listed.
• Commonly used across engine model families noted by the OEM numbers above.

Who is this for: The HZ 594626/595304 ignition coil is intended for landscapers, homeowners, and small-engine technicians who need a cost-effective, dependable replacement for a failed Briggs & Stratton ignition module. It’s a practical option when your engine won’t start or is misfiring and you’ve confirmed the OEM part number or compatible engine model. If you prefer professional installation, most small-engine repair shops can fit and test the coil quickly.