Ensure seamless integration and reliable performance with the Holley Dominator EFI J3 P3 Auxiliary Harness. Designed with precise dimensions of 26.40 cm by 25.90 cm and weighing only 0.54 kg, it delivers a compact, lightweight solution for your electronic fuel injection system. Explore how this harness elevates your ECU setup to the next level.

Optimize engine control and transmission performance with the Holley TERMINATOR X MAX ECU KIT, designed specifically for Ford MPFI engines paired with 4R70W transmissions. Its compact dimensions (36.3 x 31.8 x 23.6 cm) ensure easy integration into your vehicle’s engine bay. Discover how this precise electronic injection system can enhance your fuel management and drivetrain response.