Innovation
not Imitation

Universal

Holley 558-504 Univ. V8 EFI Harness

Part #: 961

$525.95

Holley 558-410 Crank/Cam IGN Harness

Part #: 955

$66.95

Holley 558-409 USB Cable

Part #: 948

$54.95

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

Part #: 1479

$28.95

Holley 558-405 4L60/4L80e Trans Harness

Part #: 945

$191.95

Holley 558-401 J2A Harness

Part #: 938

$158.95

Holley 558-313 FAST Dual-Sync Dist. Harness

Part #: 954

$24.95

Holley 558-308 Main Power Harness

Part #: 928

$68.95

Holley 558-304 HEI Ignition Harness

Part #: 939

$34.95

Holley 558-204 Univ. Unterminated Inj. Harness

Part #: 956

$139.95

Holley 558-200 BOSCH-Style V8 injector harness

Part #: 929

$133.95

Holley 558-105 Universal Unterminated Main Harness

Part #: 946

$364.95

Holley 558-104 Univ. MPFI Harness

Part #: 940

$364.95

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

Part #: 1482

$169.95

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

Part #: 1489

$54.95

Holley 558-117 UNIVERSAL MPFI COIL ON PLUG MAIN HARNESS

Part #: 1490

$390.95

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

Part #: 1460

$788.95
$760.95