YAMAKATO ignition coil for Briggs & Stratton 845126 replacement — direct-fit, includes 0.3mm gap gauge

The YAMAKATO 845126 ignition coil is a direct-fit replacement designed to restore spark to compatible Briggs & Stratton and select John Deere V-twin and small engine models.

If your small engine won’t start or is running inconsistently and the symptom points to weak or missing spark, this compact ignition coil from YAMAKATO is built to match the electrical and mechanical fit of several Briggs & Stratton part numbers and equivalent John Deere OEM references. Supplied with a 0.3mm air gap gauge, the coil is intended for DIY replacement on lawn tractors, garden tractors and other equipment that accept the listed part numbers.

Which engines and part numbers does this YAMAKATO coil replace?

This coil is manufactured to replace multiple Briggs & Stratton references and shares cross-compatibility with a number of John Deere MIA part numbers. It is commonly used in Intek V-Twin engine applications and a variety of B&S model families.

• Direct replacements: Briggs & Stratton 845126, 843327, 843860, 592376
• Also fits or replaces: 592846, 799651, 473177, 691060, 401577
• John Deere cross-refs: MIA12346, MIA12788, MIA12864 and models E180, LA115–LA165
• Compatibility includes some 543000, 611000, 613000 and 401000–407000 series B&S units

How do I install the YAMAKATO ignition coil and set the air gap?

Installation is straightforward for hands-on users familiar with spark coil replacements. Remove the flywheel cover and old coil, position the new coil on the engine mounting points, and set the air gap using the supplied 0.3mm gauge between the coil and flywheel magnet for correct clearance.

• Includes one ignition coil and one 0.3mm air gap gauge for accurate setup
• Standard bolt pattern fits the specified B&S and John Deere mounting points
• If the kill wire connector grounds against the casing, minor fin filing may be needed for clearance
• Recheck gap and wire routing before reassembling the shroud and testing

What should I check before ordering to ensure this coil fits my engine?

Verify the part number stamped on your old coil or consult your engine’s parts list to confirm compatibility. Measure mounting hole spacing and inspect whether the coil housing might contact the kill-wire terminal or cylinder head fins — small modifications are occasionally required for clearance.

• Confirm old part number equals one of the listed replacements (e.g., 845126, 843327)
• Compare bolt hole spacing and coil casing shape with your existing unit
• Note if the original coil pressed the kill wire; file minor fin material if necessary for fit
• Check that the engine ignition system type matches the coil specifications

What performance and packaging details are included with this replacement coil?

The YAMAKATO coil is built to restore ignition functionality by providing the required high-voltage output for spark. It is supplied as a single coil unit with a gap gauge so you can complete the installation and initial adjustment in one visit.

• Pack contents: 1 × YAMAKATO ignition coil and 1 × 0.3mm air gap gauge
• Designed for Intek V-Twin and compatible B&S/John Deere applications
• Robust molded casing intended for outdoor equipment environments
• Sold as a replacement component — ignition wires and spark plug not included

Who is this for: This replacement ignition coil is for owners and technicians of lawn tractors, garden tractors, and small engine equipment powered by compatible Briggs & Stratton or John Deere engines who need an affordable, direct-fit ignition component. It suits DIY mechanics comfortable with basic engine disassembly and gap setting, as well as service shops that maintain older B&S or Intek V-Twin platforms and require a reliable aftermarket coil option.