PARTSRUN Ignition Coil for Kawasaki FC420V Engines — Direct-Fit for John Deere LX172 LX176 GT242, High-Voltage Reliable Spark

PARTSRUN 21121-2070 ignition coil is a direct-replacement ignition coil and igniter module designed to restore reliable spark for Kawasaki FC420V and related small engines used on John Deere lawn tractors.

This aftermarket ignition coil (compatible with part 21119-2161 igniter module) is built to meet the ignition timing and spark energy requirements of Kawasaki FC420V series engines commonly found in John Deere models such as AM109209, LX172, LX176, GT242 and similar tractors. Manufactured using a vacuum potting process and PCB-level inspections, the unit aims to deliver consistent high-voltage output for easier starting and dependable running under mowing loads.

What engines and machines will this coil fit?

The PARTSRUN 21121-2070 is specified for Kawasaki FC420V/FC420V-based engines and cross-references the OEM igniter 21119-2161. It fits several John Deere lawn tractor models that originally used these Kawasaki assemblies.

• Compatible with Kawasaki FC420V engine family (including 240, 245, GT242 series)
• Direct fit for John Deere LX172, LX176, GT242 and machines listing AM109209
• Designed to match OEM mounting points and electrical connections

How does this ignition coil improve starting and performance?

This coil is engineered to provide a robust, consistent spark so the engine fires cleanly across operating conditions. A stronger, well-timed spark reduces misfires, helps cold starts, and maintains combustion stability under load during mowing or towing.

• High-voltage output for reliable ignition under load
• Optimized ignition angle compatibility with Kawasaki engines
• Automated vacuum potting improves moisture and vibration resistance

What quality checks and manufacturing features does it include?

PARTSRUN employs automated potting and digital microscope inspection of the PCB to ensure internal components are secure and solder joints meet quality tolerances. These production controls reduce early failures from vibration, heat, and ingress of contaminants.

• Automatic potting vacuum process for durable internal encapsulation
• PCB inspection under a digital microscope to detect defects
• Designed to maintain consistent ignition timing and spark energy

How do I replace the coil and what should I check during installation?

Replacement follows standard small engine coil swap procedures: disconnect the battery, remove engine shrouds, detach the old coil and isolator lead, and transfer mounting hardware if needed. Verify air gap, wiring polarity, and secure grounding for reliable operation after installation.

• Always set the specified air gap between coil and flywheel per engine manual
• Inspect plug wire and boot for damage; replace if cracked or worn
• Confirm all electrical connectors are tight and corrosion-free

Who is this for: This PARTSRUN 21121-2070 ignition coil is intended for owners and technicians maintaining Kawasaki FC420V-equipped lawn tractors—especially John Deere LX172, LX176, GT242 and similar models—who need a cost-effective, reliable replacement component. It's suited for DIY mechanics replacing a failed coil or ignition module, service shops seeking a tested aftermarket alternative, and anyone restoring older mowers where OEM parts are aged or unavailable. Note: follow the engine manufacturer’s service guidelines for air gap, torque, and safety checks; this product restores ignition function but does not alter engine design specifications.