Innovation
not Imitation

Universal

Holley 558-504 Univ. V8 EFI Harness

Part #: 961

$507.95

Holley 558-410 Crank/Cam IGN Harness

Part #: 955

$64.34

Holley 558-409 USB Cable

Part #: 948

$51.92

Holley 558-493 SNIPER EFI TO HOLLEY EFI DUAL SYNC DISTRIBUTOR ADAPTER HARNESS

Part #: 1479

$27.99

Holley 558-405 4L60/4L80e Trans Harness

Part #: 945

$184.95

Holley 558-401 J2A Harness

Part #: 938

$152.95

Holley 558-313 FAST Dual-Sync Dist. Harness

Part #: 954

$22.53

Holley 558-308 Main Power Harness

Part #: 928

$64.96

Holley 558-304 HEI Ignition Harness

Part #: 939

$32.70

Holley 558-204 Univ. Unterminated Inj. Harness

Part #: 956

$133.95

Holley 558-203 6-Cyl Universal Inj. Harness

Part #: 960

$130.95

Holley 558-200 BOSCH-Style V8 injector harness

Part #: 929

$127.95

Holley 558-105 Universal Unterminated Main Harness

Part #: 946

$350.95

Holley 558-104 Univ. MPFI Harness

Part #: 940

$351.95

Holley 558-318 C-N-P IGNITION SUB HARNESS

Part #: 1482

$163.95

Holley 558-443 SNIPER EFI CAN TO USB DONGLE ? COMMUNICATION CABLE

Part #: 1489

$52.16

Holley 558-117 UNIVERSAL MPFI COIL ON PLUG MAIN HARNESS

Part #: 1490

$375.95

Holley 556-128 Big Wire Coil-Near-Plug Smart Coil Kit

Part #: 1460

$788.95
$709.95