40,000V 3 Ohm Black Flame-Thrower Ignition Coil - Pertronix

Our review of the Pertronix Flame-Thrower 40,000 volt canister coil focuses on everyday drivers and enthusiasts who want a simple, high-voltage replacement coil that improves spark strength without major modifications. Out of the box the coil is purpose-built for 12 volt systems and promises a larger spark plug gap, which translates to smoother throttle response and potential fuel economy gains. Installation is straightforward for those converting to electronic ignition or upgrading an inductive distributor, and the black finish lets the unit blend into many engine bays for a near-stock appearance.

Key Features

• 40,000 volt output: Provides a stronger spark that supports a wider spark plug gap for improved combustion and smoother running under load.
• 3.0 ohm primary resistance: Matches many inductive ignition systems and helps ensure reliable current flow with compatible Ignitor conversions.
• 12 volt design: Direct fit for standard automotive 12 V systems so no extra voltage components are required for typical installations.
• Black finish option: Maintains a subdued, stock look that complements factory engine aesthetics while keeping wiring and components visually tidy.
• Optimized for Ignitor kits: Engineered to work seamlessly with Pertronix Ignitor electronic conversion kits and Plug n Play distributors for dependable performance.
• Versatile compatibility: Also enhances conventional distributor-type inductive systems, offering an upgrade path without a full system swap.

Who It's For

This coil is best suited for classic car owners, hobbyists, and anyone running a distributor-style ignition who wants a straightforward performance-oriented replacement. It appeals particularly to those performing an electronic conversion with the Ignitor kit or who want a higher-voltage coil to support a larger spark plug gap.

Those seeking a long-term racing solution or who need multicylinder, high-reliability competition coils may want to consider purpose-built race coils. Also, if your system requires a 1.5 ohm primary, choose the matching resistance variant rather than this 3.0 ohm model.

Pros & Cons

Pros

• Strong spark output that can improve throttle response and combustion efficiency.
• Easy to install and pairs well with Pertronix Ignitor electronic conversions.
• Solid build quality and a black finish that keeps a stock, unobtrusive look in the engine bay.

Cons

• Some users report limited lifespan compared with heavy-duty racing coils, so longevity may vary by use and conditions.

Specifications

Brand	Pertronix
Model	Flame-Thrower canister coil
Output Voltage	40,000 volt
Primary Resistance	3.0 ohm
Operating Voltage	12 volt
Finish	Black

Our Verdict

The Pertronix 40,000V 3.0 ohm Flame-Thrower coil is a sensible upgrade for drivers converting to electronic ignition or replacing an aging canister coil. It offers stronger spark energy, easy compatibility with Ignitor kits, and a clean black finish that preserves engine bay appearance, making it good value for street-driven classics and daily drivers who want improved drivability.

Frequently Asked Questions

Will this coil work with an Ignitor electronic conversion kit?
Yes, this Flame-Thrower coil is specifically engineered to work seamlessly with Pertronix Ignitor electronic conversion kits.

Can I use this coil on a 12 volt classic car?
Yes, it is designed for 12 volt systems and is a direct fit for most distributor-type applications.

Does the coil come in other resistance values or finishes?
Yes, Pertronix offers this coil in 1.5 and 3.0 ohm primary resistance values and in chrome-plated or black finishes.