FiTech GM Red and Yellow Primary Wires Black Housing HEI Coil (99903)

The FiTech GM Red and Yellow Primary Wires Black Housing HEI Coil (99903) is a high-performance replacement ignition coil designed for General Motors High Energy Ignition (HEI) systems. This coil is engineered to fit directly within the distributor cap, offering a convenient and efficient upgrade for your engine’s ignition system. It is compatible with 4, 6, and 8-cylinder engines that utilize red and yellow primary wires, making it a versatile choice for a variety of applications.

KEY FEATURES AND BENEFITS:

• Direct-fit replacement for FiTech and OE HEI distributors.
• Compatible with 4, 6, and 8-cylinder engines using red and yellow primary wires.
• Optimized resistance and inductance values for compatibility with high-amperage dwell circuits.
• Ensures rapid charging and complete coil saturation, even at high RPMs.
• Constructed with high-temperature epoxy for enhanced durability and thermal conductivity.
• Includes a complete installation hardware kit for easy setup.
• Black housing and red/yellow primary wires for easy identification.
• Reliable spark output for improved engine performance.

SPECIFICATIONS:

• Type: In-Cap HEI Ignition Coil
• Compatibility: GM HEI Systems
• Engine Compatibility: 4, 6, and 8-cylinder engines
• Primary Wire Colors: Red and Yellow
• Housing Color: Black
• Construction Material: High-temperature epoxy
• Installation: Direct-fit, includes hardware.

HOW TO USE:

• Disconnect Power: Ensure the vehicle’s ignition is off and disconnect the negative battery terminal.
• Remove Distributor Cap: Carefully remove the distributor cap from the distributor.
• Remove Old Coil: If replacing an existing coil, detach the old coil from the distributor cap.
• Install New Coil: Place the FiTech 99903 coil into the distributor cap, ensuring proper alignment.
• Connect Wiring: Connect the red and yellow primary wires to the corresponding terminals.
• Reinstall Distributor Cap: Securely reattach the distributor cap to the distributor.
• Reconnect Power: Reconnect the negative battery terminal.
• Test Ignition: Start the engine and verify proper ignition function.

BENEFITS OF USING THE FITECH GM RED AND YELLOW PRIMARY WIRES BLACK HOUSING HEI COIL (99903):

• Improved ignition performance through a consistent and strong spark.
• Increased reliability due to the robust construction and high-temperature epoxy.
• Simplified installation with the included hardware kit.
• Enhanced engine efficiency and performance, particularly at high RPMs.
• Versatile compatibility across many GM HEI engine platforms.

FEATURES:

• Internal coil design for direct cap fitment.
• Electrical values matched for performance ignition modules.
• Resistant to shock and vibration.
• Thermal conductive epoxy for heat dissipation.
• Designed for aftermarket 4 pin modules.
• Designed for high performance electronic controls.
• Provides a consistent voltage output.
• Designed to replace OE style coils.