This Blaster Coil is supplied with a ballast resistor for use with a points distributor — late-model electronic ignitions or an MSD Ignition don't require it. Special 100:1 windings and a premium oil-filled metal canister deliver improved spark output for stock points or electronic ignitions, or to complement a Blaster Ignition or MSD 5, 6, or 7 Series ignition.Specifications: Housing Color: Red Maximum Voltage: 45,000V Peak Current: 140mA Primary Resistance: 0.7 ohm Inductance: 8 mH Spark Duration: 0.35ms Turns Ratio: 4.17 Includes: Ballast resistor, two spark plug wire boots, terminals Warranty: Manufacturer's Limited 1 Year Warranty Part Number: 8203 FAQIs the MSD 8203 Blaster 2 coil legal for street use in California?Yes. It carries CARB EO# D-40-37, making it legal for sale and use on Emissions Controlled Vehicles in all 50 states per MSD's application guide.Does the 8203 coil come with a ballast resistor?Yes, it's supplied with a ballast resistor required for points distributor applications, along with two spark plug wire boots and terminals.Do I need the ballast resistor with an MSD ignition?No, late-model electronic ignitions or an MSD Ignition don't require the ballast resistor.What ignitions is this coil compatible with?Stock points or electronic ignitions, and it pairs well with a Blaster Ignition or MSD 5, 6, or 7 Series ignition.Compliance: This coil carries California Air Resources Board (CARB) Executive Order EO# D-40-37, making it legal for sale and use on Emissions Controlled Vehicles in all 50 states when installed per MSD's application guide.{"@context":"https://schema.org","@type":"FAQPage","mainEntity":[{"@type":"Question","name":"Is the MSD 8203 Blaster 2 coil legal for street use in California?","acceptedAnswer":{"@type":"Answer","text":"Yes. It carries CARB EO# D-40-37, making it legal for sale and use on Emissions Controlled Vehicles in all 50 states per MSD's application guide."}},{"@type":"Question","name":"Does the 8203 coil come with a ballast resistor?","acceptedAnswer":{"@type":"Answer","text":"Yes, it's supplied with a ballast resistor required for points distributor applications, along with two spark plug wire boots and terminals."}},{"@type":"Question","name":"Do I need the ballast resistor with an MSD ignition?","acceptedAnswer":{"@type":"Answer","text":"No, late-model electronic ignitions or an MSD Ignition don't require the ballast resistor."}},{"@type":"Question","name":"What ignitions is this coil compatible with?","acceptedAnswer":{"@type":"Answer","text":"Stock points or electronic ignitions, and it pairs well with a Blaster Ignition or MSD 5, 6, or 7 Series ignition."}}]}