When your tractor cranks but won’t fire, or the engine stumbles and misses under load, it’s often the ignition coil that’s letting you down. This 12-volt ignition coil provides internal resistance for straight 12 volt systems without series resistance, delivering the reliable spark your International Harvester needs to keep running strong through long days in the field.
What You’re Getting
- Complete assembly with D170 ignition coil, CN803 coil nipple, and CB4 coil bracket – everything needed for installation
- Built-in internal resistance eliminates the need for external resistors or ballast coils
- Direct 12-volt operation works with both original and converted electrical systems
- Quality construction designed to handle vibration and temperature extremes
- Includes all mounting hardware for a complete replacement
Built for Real Farm Work
International Harvester tractors have powered American farms for generations, from small utility models to the big row-crop machines that built these brands’ reputation. Whether you’re running a Farmall doing chores around the place or a larger model pulling implements, reliable ignition is what keeps you moving. This coil delivers the consistent spark that IH engines need to run smooth and strong.
Made to Last
Farm equipment operates in tough conditions – dust, moisture, vibration, and temperature swings that would kill automotive parts. This coil is built to handle what your tractor dishes out, with robust windings and quality materials that maintain proper spark output season after season.
Good to Know
Installation is straightforward – the included bracket and hardware make this a direct replacement. Before installing, check your spark plug wires for cracks or carbon tracking, as a weak coil often reveals other ignition system problems. A quick tip: if you’ve been having starting issues, this is a good time to gap your points and check timing while the coil’s off.
