Holley 550-604 HP EFI ECU & Harness Kits

Holley 550-604 HP EFI ECU & Harness KitsUniversal V8 Multi Point Fuel Injection, Includes Bosch Oxygen Sensor Part Number: 550 604 Looking 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

fuel injectors capable of supporting up to 650 HP naturally aspirated or 1250 HP on forced induction applications

Nostalgia VT 3 3/8" Tachometer 8000 RPM with Stainless High Step Bezel Curved Glass Lens

polished look coupled with Red metering blocks and throttle body will certainly set your ride apart whether you are at the show or track

2015 GMC Terrain 3

This willallow you to fine tune depending on your application for engine configuration and driving conditions

• Shrink Ratio of 3:1

SG Series 3 3/8" Ultimate Speedometer & 2 Duals with Stainless Low Step Bezels and Flat Glass Lenses

BILLET BREATHER MILLED 1-1/4

please shop our black and shiny finish carburetors

Part Number: JAZ300-000-20

Includes both crank and cam sensors to support sequential EFI operation

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