Hypertech 4030 Cool Fan Switch for 1990-1993 Chevrolet/GMC Review
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Hypertech 4030 Cool Fan Switch for 1990-1993 Chevrolet/GMC
Turns on cooling fans earlier for more horsepower
Reduces the chance of overheating
Easy installation
No modifications required
Designed to be used with other Power Tuning products for increased horsepower
