Nexus V8 GT150 (USCAR) Injector Primary Breakout

Overview

The Nexus V8 GT150 Injector Primary Breakout delivers plug-and-play compatibility between your Haltech Nexus R5 Universal V8 harness and GT150 (USCAR) style injectors. Essential for V8 builds running modern high-flow injectors, this breakout eliminates the need for splice-heavy custom wiring whilst maintaining full engine management control over your fuel delivery system.

Technical Specifications

• Part Number: HT-186002
• Connector Type: GT150 (USCAR) female receptacles
• Primary Channels: 8 injector outputs
• Harness Compatibility: Nexus R5 Universal V8 Terminated (HT-186200)
• Wire Gauge: Automotive grade multi-strand copper

Why You Need This

GT150 injectors are the go-to choice for serious V8 builds — whether you're running a boosted LS engine, high-compression naturally aspirated setup, or converting a classic American V8 to EFI. The problem is connector compatibility. Your Haltech Nexus harness comes terminated, but those connectors rarely match your chosen injector plugs. Rather than butchering a £400+ harness with splices that create voltage drop and potential failure points, this breakout gives you proper GT150 connections from day one.

We see this constantly in the workshop — builders who've saved money on "universal" harnesses only to spend days rewiring injector connections, often with dodgy crimp joints that cause misfires months later. GT150 connectors are sealed, vibration-resistant, and handle the current demands of large injectors without voltage drop. This breakout maintains that OEM-level reliability whilst integrating seamlessly with your Nexus R5 setup.

ECU & System Compatibility

Designed specifically for the Haltech Nexus R5 when paired with the Universal V8 Terminated harness (HT-186200). The Nexus R5's advanced injector control algorithms work perfectly with GT150-style high-impedance injectors, providing precise fuel delivery timing and multi-stage injection strategies that maximise power whilst maintaining emissions compliance where required.

What's in the Box

• Primary injector breakout harness with 8x GT150 female connectors
• Sealed connector housing with integrated strain relief
• Mounting bracket for secure engine bay installation

Complete Your Build

Most customers fitting this breakout are completing comprehensive V8 EFI conversions and also require the Nexus R5 Universal V8 Terminated harness (HT-186200) as the foundation. For boosted applications, consider our pressure sensor breakouts and boost control solenoid harnesses to maximise your Nexus R5's capabilities. Our technical team maintains UK stock of the complete Nexus ecosystem and can configure the perfect harness package for your specific build — from mild street engines to full competition setups.