Holley Universal V8 MPFI EFI HARNESS KIT. - 558-504
Holley is quickly becoming The New Standard In EFI! Holley?s HP ECU is standard equipment on the 2013/2014 Chevrolet COPO Camaro and Holley?s EFI throttle body powers every NASCAR Sprint Cup Series team.
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Lethal Performance is proud to offer the entire line of Holley products!
