


Holley EFI HP EFI ECULooking for a plug and play alternative for your stock or built late model factory EFI engine? How about a replacement ECU for your older Holley C950? Holley has you covered. HP EFI ECU and harness kits are designed to be used with popular factory EFI engines as an alternative to the factory ECU and harness or as a replacement for your C950 ECU. The HP allows you to accurately control the fuel and ignition of your engine along with additional controls
Quick Dispatch:
Your Holley EFI HP EFI ECU orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
You'll receive a tracking link by email once your Holley EFI HP EFI ECU ships.
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Questions about Holley EFI HP EFI ECU, sizing, or delivery? We're just an email away.
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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
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4.0 ★★★★★
Based on 1613 reviews
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Product Reviews
★★★★★ 5
Quality socket
Size: 27mm
Beefy socket, worked great for removing filter housing for 2004 Mini.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 22, 2024
★★★★★ 5
Fits really well. Materials appear sturdy.
Size: 36mm
Fits my 05 Z4 prefect. Materials seem sturdy. Will probably last longer than the car.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 19, 2025
★★★★★ 5
A great socket.
Size: 27mm
Got it for a bmw oil filter housing. It does its job great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 4, 2024
★★★★★ 5
Gets Job Done. Good Price.
Size: 36mm
I used this to take the large bolt off the triple tree clamp on my motorcycle. For this purpose it worked great. I doubt I'll need to do this often and I'm unlikely to ever own the vehicles who's oil filter it fits but glad I bought it. If you need a 36mm bolt undone and have a 3/8th drive wratchet this is an economical way to get it done.
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Reviewed in the United States on October 29, 2017
★★★★★ 4
A good product for a good price.
Size: 36mm
it was the right size, what more could I ask for and no profile that's the bomb.
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Reviewed in the United States on January 18, 2018
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