Holley® 550-606 - HP EFI ECU and Harness Kit

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  • For Universal FORD V8 Multi-Point Fuel Injection.
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Product Details

Holley Performance Carburetors, EFI Kits & Components

HP EFI ECU and Harness Kit (550-606) by Holley®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at an affordable cost.

Notes: For Universal FORD V8 Multi-Point Fuel Injection.


Type: With Bosch Oxygen Sensor


  • High quality at an affordable price
  • Expertly made from premium materials
  • Built to match your exact requirements


  • Bosch Oxygen Sensor
  • Ford V8 Injector Harness

Holley® being an undeniable leader in fuel systems for over 100 years, Holley offers a wide range of performance carburetors, fuel pumps, intake manifolds and engine dress–up products for street performance, race, and marine applications. Holley carburetors have powered almost every NHRA Pro–Stock champion and every NASCAR Sprint Cup team for 40 years. As a single solution, or partnered with products from other Holley companies such as Hooker, Flowtech, NOS, Weiand, and others, the Holley products provide the quality and performance you've been looking for.

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Warranty Information

Holley warrants its products to be free from defects in materials or workmanship for a period of 90 days. The warranty period begins on the date the product is delivered. The warranty is granted to the end-user and applies to products which are purchased, installed, and used for the purposes for which they are originally designed. This warranty covers defects arising under normal use and does not cover malfunctions or failures resulting from misuse, abuse, neglect, improper installation, or incorrect maintenance. During the warranty period, Holley will repair or replace, at no charge, a product that is defective in materials or workmanship. Holley reserves the right to either repair or replace a defective component at its discretion and reserves the right to substitute an equivalent product under the terms of this warranty.

Magnuson-Moss Warranty Act:
Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)) Learn More

Vehicle Fitment

Ford Cougar
1995 Ford Cougar
Ford Crown Victoria
2003 Ford Crown Victoria
  • MPI
Ford E-series
2014 Ford Econoline Van / Econoline Wagon
2013 Ford Econoline Van / Econoline Wagon
2012 Ford Econoline Van / Econoline Wagon
2011 Ford Econoline Van / Econoline Wagon
2010 Ford Econoline Van / Econoline Wagon
Ford Expedition
2014 Ford Expedition
  • MPI
2013 Ford Expedition
2012 Ford Expedition
  • Gas
2011 Ford Expedition
  • Gas
2010 Ford Expedition
  • Gas
2008 Ford Expedition
  • MPI
2007 Ford Expedition
  • MPI
1998 Ford Expedition
  • MPI
1997 Ford Expedition
  • MPI
Ford Explorer
2010 Ford Explorer
  • MPI 4.6L
2009 Ford Explorer
  • MPI
2008 Ford Explorer
  • MPI
2007 Ford Explorer
  • MPI
2006 Ford Explorer
  • MPI
1996 Ford Explorer
  • MPI 5.0L
Ford F-150
2016 Ford F-150
  • 5.0L Gas
2015 Ford F-150
  • 5.0L Gas
2014 Ford F-150
  • 5.0L Gas
2013 Ford F-150
  • 5.0L Gas
2012 Ford F-150
  • 5.0L Gas
2011 Ford F-150
  • 5.0L Gas
Ford F-250
2001 Ford F-250
  • MPI
1999 Ford F-250
  • MPI
1998 Ford F-250
  • MPI
1997 Ford F-250
  • MPI
1996 Ford F-250
  • MPI
1995 Ford F-250
  • MPI
Ford F-350
2016 Ford F-350
2015 Ford F-350
2014 Ford F-350
2013 Ford F-350
2012 Ford F-350
2011 Ford F-350
2003 Ford F-350
  • MPI
2002 Ford F-350
  • MPI
1995 Ford F-350
  • MPI
Ford Fairmont
2007 Ford Fairmont
2006 Ford Fairmont
2005 Ford Fairmont
2004 Ford Fairmont
2003 Ford Fairmont
2002 Ford Fairmont
Ford Lobo
2016 Ford Lobo
  • 5.0L
2015 Ford Lobo
  • 5.0L
2014 Ford Lobo
2013 Ford Lobo
2012 Ford Lobo
2011 Ford Lobo
2010 Ford Lobo
  • MPI
2009 Ford Lobo
  • MPI
Ford Mustang
2017 Ford Mustang
  • MPI 5.0L / 5.2L
2016 Ford Mustang
  • MPI 5.0L / 5.2L
2015 Ford Mustang
  • MPI 5.0L
2014 Ford Mustang
  • MPI 5.0L / 5.8L
2013 Ford Mustang
  • MPI 5.0L / 5.8L
2012 Ford Mustang
  • MPI 5.0L / 5.4L
2011 Ford Mustang
  • MPI 5.0L / 5.4L
2010 Ford Mustang
  • MPI 4.6L
2009 Ford Mustang
  • MPI 4.6L
2008 Ford Mustang
  • MPI 4.6L
2007 Ford Mustang
  • MPI 4.6L
2003 Ford Mustang
  • MPI
2002 Ford Mustang
  • MPI
2001 Ford Mustang
  • MPI
2000 Ford Mustang
  • MPI
1999 Ford Mustang
  • MPI
1998 Ford Mustang
  • MPI
1997 Ford Mustang
  • MPI
1996 Ford Mustang
  • MPI
Ford Thunderbird
1996 Ford Thunderbird
  • MPI
1995 Ford Thunderbird
  • MPI
1994 Ford Thunderbird
  • MPI
Low Prices Price match guarantee
In-House Experts We know our products
Guaranteed Fitment Always the correct part
Easy Returns Quick & Hassle Free

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