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HOL-558-503 PART NUMBER
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HOL-550-607 PART NUMBER
HOLLEY 550-607 HP EFI ECU & HARNESS KITS$2,849.95HP EFI ECU & HARNESS KITS
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GM LS2/3/7 (58x crank sensor) with Jetronic/Minitimer (Bosch type) connectors on injector harness (fits Holley 522-xxx injectors), Includes Bosch Oxygen Sensor -
HOL-550-617 PART NUMBER
HOLLEY 550-617 HP EFI ECU & HARNESS KITS$3,299.95HP EFI ECU & HARNESS KITS
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Complete 99-04 4 Valve Ford Modular Engine Plug and Play Kit - Jetronic "Bosch Style" injector harness - Bosch Wideband O2 -
HOL-550-616N PART NUMBER
HOLLEY 550-616N HP EFI ECU & HARNESS KITS$3,549.95HP EFI ECU & HARNESS KITS
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Complete 99-04 2 Valve Ford Modular Engine Plug and Play Kit - Jetronic "Bosch Style" injector harness - Includes NTK Oxygen Sensor -
HOL-558-505 PART NUMBER
HOLLEY 558-505 FORD MODULAR 2 VALVE EFI HARNESS KIT$1,599.95FORD MODULAR 2 VALVE EFI HARNESS KIT
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1999-2004 Ford Modular 2 Valve Harness Kit -
HOL-550-601N PART NUMBER
HOLLEY 550-601N HP EFI ECU & HARNESS KITS$2,999.95HP EFI ECU & HARNESS KITS
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GM TPI and Holley Stealth Ram™, Includes NTK Oxygen Sensor -
HOL-558-465 PART NUMBER
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HOL-558-212 PART NUMBER
HOLLEY 558-212 FORD V8 INJECTOR HARNESS$207.95FORD V8 INJECTOR HARNESS
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Evenly spaced Ford V8 Injector Harness for USCAR / EV6 style Injectors -
HOL-558-326 PART NUMBER
HOLLEY 558-326 FORD V8 INJECTOR HARNESS$134.95LS COIL EXTENSION HARNESSES
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Designed to extend your factory coil harness, allowing you to easily remote mount your LS ignition coils. -
HOL-558-128 PART NUMBER
HOLLEY 558-128 5.0L FORD ENGINE MAIN HARNESS$584.955.0L FORD ENGINE MAIN HARNESS
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Plug and Play with fuel injected 5.0L Small Block Ford Engines

