Pertronix Flame-Thrower Ignition Coil 40,000V Black 40611 — 3.0Ω High-Output Epoxy-Filled

The PerTronix Flame-Thrower Ignition Coil 40611 is a high-output 40,000-volt, epoxy-filled 3.0-ohm coil designed to improve spark energy and protect electronic ignition components in 12-volt distributor-based systems.

This compact, black-finish coil blends a factory-style look with performance upgrades. Engineered for use with breaker-point setups and PerTronix Ignitor I electronic modules, it supplies stronger secondary voltage while its 3.0-ohm primary resistance reduces current stress on modules and points. The epoxy-filled canister increases vibration resistance and allows flexible mounting options, making it a practical replacement for many classic and modified engines that need a reliable, higher-output coil.

How does this coil improve ignition performance?

The Flame-Thrower coil raises secondary voltage up to 40,000 volts to produce a hotter, more consistent spark across the plug gap. That increased energy can improve combustion consistency and throttle response without changing your distributor or spark plug setup.

• Delivers up to 40,000 V secondary output for stronger spark energy
• Epoxy filling reduces internal arcing and protects windings
• Works with stock plug gaps and ignition timing in most setups

Will this coil work with my vehicle’s ignition system?

PerTronix designed the 40611 for 12-volt inductive systems, including breaker-point distributors and PerTronix Ignitor I modules. It’s compatible with many distributor-based systems that benefit from a higher primary resistance to safeguard electronic components.

• Optimized for breaker points and PerTronix Ignitor I modules
• 3.0 ohm primary resistance suits inductive ignitions needing higher resistance
• Fits common coil brackets and mounts in multiple orientations

How durable and install-friendly is the PerTronix 40611?

The coil features an epoxy-filled canister that resists vibration and mechanical shock, extending service life in street and high-vibration applications. Its OEM-style black finish and footprint match many factory coils, simplifying replacement and installation.

• Epoxy-filled for vibration and shock resistance
• Mountable in any orientation for flexible placement
• Black finish fits standard ignition coil brackets for easy swap-in

What electrical specifications should I expect?

This ignition coil is a 12-volt unit with a primary resistance of 3.0 ohms and a rated secondary output up to 40,000 volts. The higher primary resistance helps limit current draw to protect ignition modules and mechanical points from excessive electrical stress.

• 12-volt system compatibility
• 3.0 ohm primary resistance to protect ignition electronics
• Rated up to 40,000 volts secondary output for improved spark delivery

Who is this for: The PerTronix Flame-Thrower 40611 is aimed at classic car owners, restorers, and hot-rodders who want a dependable, higher-output coil that fits common distributor setups. It’s also a smart choice for anyone upgrading from a worn factory coil or protecting an electronic Ignitor module or breaker points from excessive current. If you need a durable, easy-to-install coil that balances stronger spark energy with component protection, this model is a practical, drop-in option.