Walker Products 921-2122 Ignition Coil

Ignition coils are designed for the professional technician and meet or exceed OEM manufacturers specifications in fit form and function. The primary winding of the ignition coil is wound with a small number of turns and has a small resistance. Applying the battery to this coil causes a sizable DC current to flow. The secondary coil has a much larger number of turns and therefore acts as a step-up transformer. But instead of operating on AC voltages, this coil is designed to produce a large voltage spike when the current in the primary coil is interrupted. Modern coil designs produce voltage pulses up in the neighborhood of 40,000 volts from the interruption of the 12-volt power supplied by the battery. Some modern engines have multiple ignition coils mounted directly on the sparkplugs. Instead of single voltage pulses, they may under some engine conditions produce three voltage pulses. The ignition coil is a compact, electrical transformer that boosts the battery's 12 volts to as high as 40,000 volts. Walker Products began supplying the fuel system needs of the automotive industry in 1946. Today Walker is one of the largest, privately owned manufacturers of fuel system components and engine sensors, and has served the needs of the worldwide automotive aftermarket. We are committed to supplying products manufactured to meet or exceed OEM standards and specifications. This effort is backed by our own manufacturing, product management and engineering staff to ensure it is maintained and accurate in the production of quality parts, vehicle applications, instruction sheets and technical support. Our products include Carburetor and Fuel Injection Repair Kits, Oxygen Sensors and other Engine Management products such as Throttle Position Sensors, Cam and Crankshaft Sensors, Fuel Injectors, Spark Plug Wires and Gaskets. As an ISO 9001:2008/TS16949 certified company, we are committed to supplying the highest quality products.

• Designed for the professional technician and meet or exceed OEM manufacturers specifications
• The primary winding of the ignition coil is wound with a small number of turns and has a small resistance, applying the battery to this coil causes a sizable DC current to flow
• Modern coil designs produce voltage pulses up in the neighborhood of 40,000 volts from the interruption of the 12-volt power supplied by the battery
• Some modern engines have multiple ignition coils mounted directly on the sparkplugs and instead of single voltage pulses, they may under some engine conditions produce three voltage pulses
• Manufactured to meet or exceed OEM standards and specifications
• Fit type: Vehicle Specific