Gauges and Electronics

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...

GM LS 24x Crank, 1x Cam - LS1/LS6 Engines - 4L60E/4L80E Transmission Control, No Laptop Required, 3.5" Touchscreen Included Take control of your LS engine with Terminator X Max! Don't settle for a junkyard ECU with a cumbersome tuning interface when you...

HP Smart Coil ignition sub-harness. Includes a pair of coil harnesses for an 8 cylinder engine. These harnesses are similar in design to factory GM LSx coil harnesses, but plug into Holley HP Smart Coils. They plug into Holley LSx plug and play main...

Designed to plug and play with HyperSpark distributors and Holley EFI main harnesses with an ignition connector, such as part number 558-104. Features: Used to run a "timed sequential" fuel strategy, with Holley EFI V5 Build 160 or Later, or Terminator...

Used to record track surface temp and tire temperature.  Also can be used for brake temperature sensors M18 Infrared Temperature Sensor Product size (Diameter):M18*1mmOutput signal:0-5VSensor Length : 68mmMeasuring temperature: 32-392F...

Introducing J1A through J4 Connectors Kits so you no longer have to buy a complete connector kit if you only need one I/O connector Features: OEM Quality Connectors and Pins Perfect for DIY or Wiring Specialists that want to build custom wiring...

Introducing J1A through J4 Connectors Kits so you no longer have to buy a complete connector kit if you only need one I/O connector Features: OEM Quality Connectors and Pins Perfect for DIY or Wiring Specialists that want to build custom wiring...

Plug and Pins Only -  26 Pin 4 Row 5 Keyway Superseal Connector Set     Suits: Holley Dominator 

This QuickCar Gauge displays fuel pressure and comes with LED backlighting. Display has a 0-15 PSI Range and gauge is a 2-5/8" Diameter. This is Mechanical type gauge with a Male 1/8" NPT connection on the back. Pressure line kit and warning light switch...

QuickCar’s LED backlit Oil Pressure, Water Temperature, and Fuel Pressure standard mechanical gauges mounted in a black panel measuring 10-1/2” wide and 4-1/2” tall. Panel comes complete with all sending units, warning lights, and...

QuickCar’s LED backlit Oil Pressure and Water Temperature standard mechanical gauges mounted in a black panel measuring 7-1/4” wide and 4-1/2” tall. Panel comes complete with all sending units, warning lights, and wiring to complete the...