Haltech 40th Anniversary Crew Neck - 3XL 5 This harness expands the functionality

This harness expands the functionality of a Nexus Plug-in ECU by adding connections for a wideband O2 sensor

Keep the winter at bay with this Haltech Knit Beanie

and plug the Haltech ECU directly into the factory harness

12 x digital outputs

Haltech 40th Anniversary Crew Neck - 3XL 5 This harness expands the functionalityA clean black crewneck designed to mark Haltech's 40th year, featuring a subtle neon pink chest logo that adds contrast without overpowering the look. Made with a relaxed fit and premium fabric, it balances everyday comfort with a refined, understated style. A simple piece that quietly celebrates a meaningful milestone.