Best Quality Reproduction Correct Date Code 3-Q-73 Correct Wire Type & Length Correct Terminals & Boots Since January 1961, GM has been date-coding spark plug wires to identify the year and quarter in which the wire set was produced. Reproduction spark plug wire sets are available for the 1st and 3rd quarter of a year. The set you select should precede your Firebird's assembly date by 1 to 9 months. Choose the spark plug wire set with markings based on the build date of your car.
Vehicle Fitment:
The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
IMPORTANT: Electrical items are covered by a 30 day EXCHANGE ONLY WARRANTY. There are no returns or refunds on such items.
