Plug set only - Surlok connectors red and black 120A - Suits Nexus R3

Overview

Professional-grade Surlok power connectors engineered for Nexus R3 ECU installations where reliable high-current connections are non-negotiable. These 120A-rated plugs deliver the bulletproof power distribution that race and high-performance builds demand, eliminating the voltage drops and connection failures that plague standard automotive connectors under extreme conditions.

Technical Specifications

• Part Number: HT-030031
• Current Rating: 120A continuous
• Connector Type: Surlok professional automotive
• Colour Coding: Red (positive) and Black (negative)
• ECU Compatibility: Haltech Nexus R3
• Contact Material: High-conductivity copper alloy

Why You Need This

When you're running a Nexus R3 in a serious build — whether it's a 1000hp 2JZ drag car, an LS-swapped track weapon, or a compound turbo diesel — your ECU's power supply is the foundation everything else relies on. Standard automotive connectors simply aren't designed for the sustained high-current demands of modern performance ECUs under race conditions. Voltage drops from inadequate connections cause erratic ECU behaviour, data logging errors, and in worst cases, complete system failures mid-run.

These Surlok connectors solve that problem definitively. The 120A rating provides massive headroom even for the most power-hungry setups, whilst the professional-grade construction ensures consistent, low-resistance connections that won't degrade over time. We've seen too many builds compromised by cheap power connections — on cars pushing serious power, this isn't where you economise. The red and black colour coding also eliminates wiring errors during installation, crucial when you're working with high-current circuits where mistakes can be expensive.

ECU & System Compatibility

Specifically designed for Haltech Nexus R3 ECU installations. These connectors interface with the R3's power distribution architecture to provide the robust electrical foundation your performance build requires. If you're running a different Haltech ECU or need clarification on power requirements for your specific application, contact our technical team for guidance.

What's in the Box

• Surlok connector - Red (positive terminal)
• Surlok connector - Black (negative terminal)
• Professional-grade contact pins
• Installation hardware

Complete Your Build

Most customers fitting a Nexus R3 also require the main ECU harness, power distribution components, and sensor wiring to complete their installation. Our technical team can recommend the complete package for your specific build — from basic EFI conversions to full race setups. With UK stock and expert pre-sales advice, we'll ensure you get the right components first time. Contact us for a curated parts list tailored to your application and power requirements.