1964–1968 C2-C3 Transistor Ignition Amplifier – RPO K66 - OEM Number(s) (1115005)
Restore Rare RPO K66 Performance with a Factory-Style Ignition Upgrade
Originally offered as RPO K66, the transistor ignition system was a cutting-edge option that delivered more reliable spark and stronger performance in high-compression Corvette engines. This complete transistor ignition amplifier is a faithful reproduction of the rare and desirable system used on select 1964–1968 Corvettes, especially those fitted with high-performance big block and fuel-injected small block configurations.
Whether you're restoring a factory K66 car or upgrading your ignition to GM’s original solid-state solution, this unit brings back the clean starts, high-RPM consistency, and improved ignition durability that defined the K66 advantage. It's an essential piece of drivetrain authenticity for any mid-year performance build.
Because Details Matter
• Fits 1964–1968 Corvettes originally equipped with RPO K66
• Reproduction transistor ignition amplifier—complete assembly
• Ideal for big block, high-output small block, and fuel-injected restorations
• Supports clean spark delivery and ignition stability at high RPM
• Includes amplifier housing, components, and connection hardware
• Restores GM factory electronic ignition performance
• Built to match OE appearance and function
Dimensions and Weight
• Application: RPO K66 Transistor Ignition System
• Component: Amplifier Module Assembly
Tech Notes
• RPO K66 transistor ignition was introduced mid-1964 and became optional on select high-performance models through 1968
• Standard point-based ignition systems are not interchangeable with transistor amplifiers without proper supporting components
• Ideal when paired with matching distributor and tachometer drive gear upgrades
• Country of Origin: USA
Rebuilding your Corvette’s ignition system with factory-correct components isn’t just about spark—it’s about honoring the engineering that made GM’s mid-year era legendary. This K66 transistor amplifier is the right way to restore your edge.
Also known under these part numbers: (For reference only)