Blaster 3 Coil

The MSD Blaster 3 Coil is a high-output ignition coil designed to deliver extreme spark energy for enhanced engine performance and reliable ignition under demanding conditions. Built as a canister-style, oil-filled unit with a 0.700 ohm resistance rating and Male HEI connector, this coil generates 45,000 volts—sufficient output for high-performance and racing applications where standard OEM coils fall short. MSD IGNITION's Blaster 3 Coil represents a proven choice for engine builders, performance enthusiasts, and tuners seeking consistent spark delivery across broad RPM ranges and variable load conditions.

The 45,000-volt output specification is the key differentiator for this coil. Higher voltage reserves allow the spark plug gap to remain clean and functional even under high compression, lean mixture conditions, or when running larger electrode gaps—all scenarios where weaker coils produce misfires or fouling. The oil-filled canister design provides thermal stability and extends coil life by managing heat dissipation during sustained high-RPM operation. The 0.700 ohm internal resistance is optimized for compatibility with MSD's ignition control modules and other quality aftermarket distributors, ensuring predictable dwell time and reducing the risk of coil saturation at elevated engine speeds.

This coil suits builders and owners upgrading carbureted or early fuel-injected engines where factory electrical architecture limits spark energy. Street machines, bracket racers, marine engines, and vintage hot rods benefit from the reliability and performance margin the Blaster 3 provides. The red finish and compact 3.8 × 2.5 × 8.6 inch form factor simplify installation in tight engine bays while the Male HEI connector allows direct mounting to compatible distributors without extensive harness modification.

MSD IGNITION has long held a leadership position in the performance ignition market, and the Blaster 3 line continues that legacy by offering voltage output and thermal management that compete with coils costing significantly more. For serious builders evaluating ignition system upgrades, the combination of verified 45,000-volt output, proven oil-filled construction, and broad compatibility makes the Blaster 3 Coil a direct competitor to premium alternatives without premium pricing.