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HOL-550-601N PART NUMBER
HOLLEY 550-601N HP EFI ECU & HARNESS KITS$2,999.95
HP 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-558-126 PART NUMBER
HOLLEY 558-126 UNTERMINATED 15' FLYING LEAD MAIN HARNESS$429.95
UNTERMINATED 15' FLYING LEAD MAIN HARNESS
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Pre-Terminated J1A / J1B 15' Flying Lead Main Harness -
HOL-558-430 PART NUMBER
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HOL-558-118 PART NUMBER
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HOL-558-133 PART NUMBER
HOLLEY 558-133 LS1/6 (24X/1X) ENGINE MAIN HARNESS, EXTENDED LENGTH$715.95
LS1/6 (24X/1X) ENGINE MAIN HARNESS, EXTENDED LENGTH
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LS1/6 Main Harness for HP EFI & Dominator EFI -
HOL-558-110 PART NUMBER
HOLLEY 558-110 HOLLEY EFI FORD COYOTE ENGINE MAIN HARNESS W/ TI-VCT AND STOCK COILS (2011-2017)$899.95
HOLLEY EFI FORD COYOTE ENGINE MAIN HARNESS W/ TI-VCT AND STOCK COILS (2011-2017)
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Coyote Engine Main Harness compatible with 2011-2017 Ti-VCT Coyote Engines -
HOL-558-113 PART NUMBER
HOLLEY 558-113 FORD MODULAR 2V & 4V MAIN HARNESS FOR USE WITH HOLLEY SMART COILS$949.95
FORD MODULAR 2V & 4V MAIN HARNESS FOR USE WITH HOLLEY SMART COILS
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Main Harness for 1999-2004 2 & 4 Valve Ford Modular (4.6 & 5.4L) Engines for use with Holley Smart Coils
