SKU: 34614319069

HP EFI ECU & Harness Kits - 550-617N

Sale price$1597.47 Regular price$1774.97
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Ships within 48 hours · Estimated delivery Aug 5 - Aug 10

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Description

HP EFI ECU & Harness Kits - 550-617NOverview: Looking for a plug and play kit for your Ford Modular engine? The HP ECU allows you to accurately control the fuel and ignition of your engine plus much more! Is your cam too wild for a MAF? Power adders? You name it, and Holley EFI can handle it. Features: Designed specifically for 1999 2004 Ford Modular 4 Valve Engines Plug and play with factory sensors; Crank, Cam, TPS, Coolant Temp, etc Plug and play with factory actuators; Coils,

Overview:

Looking for a plug and play kit for your Ford Modular engine? The HP ECU allows you to accurately control the fuel and ignition of your engine plus much more! Is your cam too wild for a MAF? Power adders? You name it, and Holley EFI can handle it.

Features:

  • Designed specifically for 1999-2004 Ford Modular 4 Valve Engines
  • Plug and play with factory sensors; Crank, Cam, TPS, Coolant Temp, etc
  • Plug and play with factory actuators; Coils, Injectors, IAC
  • Connectors for Holley Fuel Pressure and Oil Pressure sensors
  • Connectors for expanded Inputs and Outputs
  • Complete plug and play kit includes HP ECU, NTK O2 sensor, MAP sensor, Coil Drivers and all necessary Harnesses
  • The NTK Oxygen Sensor is recommended when using leaded or methanol fuels, high exhaust and forced induction applications or for highest precision feedback

Application:

Year Make Model Submodel Engine Size
Universal

Specs:

Brand Holley EFI
Emission Code 4
Engine 99-04 Ford Modular (4.6 & 5.4L) 4 Valve
Ignition Type 4v Ford Modular
Product Type HP EFI Kit
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 34614319069

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4.2 ★★★★★
Based on 25 reviews
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Justine Smtih
Bozeman, US
★★★★★ 5
Perfect for a skin reset
Style: Updated Formula
Sometimes I just need to reset my skin and use gentle non-irritating products. This set is perfect. The thermal water spray is the BEST. I travel with it and it always keeps my skin calm. And hydrated.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
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Leidi Pereira
Chelsea, US
★★★★★ 5
“Great starter kit for sensitive skin
Style: Updated Formula
The products are gentle, soothing, and didn’t cause any irritation. My skin feels calmer, hydrated, and healthier after using them. Perfect size to try the routine before buying the full products.” ⭐⭐⭐⭐⭐
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Reviewed in the United States on March 8, 2026
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Verified Purchase
Harmony
Alexandria, US
★★★★★ 5
Dermatologist recommended; soothing for sensitive skin
Style: Updated Formula
Recommended by my dermatologist for sensitive skin. So comforting! Appreciate the sample size kit.
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Reviewed in the United States on March 19, 2026
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Verified Purchase
Victoria Van Deventer
Pawtucket, US
★★★★★ 5
Truly amazing products!! TY!
Style: Updated Formula
Husband has sever skin conditions, ONLY protects that doesn’t sting or burn his skin!! And he’s tried almost everything OTC!
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Reviewed in the United States on May 3, 2026
T
Verified Purchase
Theresa Jarman
Cuba, US
★★★★★ 4
Good for sensitive skin
Style: Updated Formula
It actually helps my skin. I had curology before this and still had breakouts around my lips and nose. After trading to this, it has calmed down a lot. No bumps or pimples. This package is smaller samples to test out to see if it's good for you and your skin. Its really good for sensitive skin.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 21, 2026

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