FOUR DECADES OF EXPERTISE IN AUTOMOTIVE PROTECTION
Since 1984, Harnessflex has specialized in protecting critical wiring harnesses for heavy automotive applications, building a global reputation for engineering innovation and uncompromising quality in extreme mobile environments.
Founded in the UK, Harnessflex emerged from the growing need for specialized cable protection in commercial vehicles, construction equipment, and agricultural machinery. As vehicles became more complex with sophisticated electrical systems, traditional protection methods proved inadequate. Harnessflex pioneered flexible nylon conduit systems specifically engineered for the unique challenges of heavy duty vehicle applications—constant vibration, extreme temperature fluctuations, exposure to oils and chemicals, and mechanical stress. This specialized focus established Harnessflex as the preferred choice for manufacturers demanding reliable wiring protection.
The brand's commitment to heavy automotive engineering led to continuous innovation in materials, fittings, and system design. Harnessflex developed comprehensive connector interface systems compatible with major automotive connector brands including Deutsch, Molex, and AMP—eliminating the need for custom adaptors and streamlining harness assembly. The introduction of split conduit systems revolutionized retrofit and service applications, allowing protection to be added without disconnecting cables.
As part of ABB's Installation Products division, Harnessflex combines decades of specialized heavy automotive expertise with global manufacturing capabilities and technical support. Today, Harnessflex products protect critical wiring in vehicles operating across six continents, from arctic mining operations to desert construction sites, proving that specialized engineering delivers superior performance in demanding applications.
POWERING THE ELECTRIC VEHICLE REVOLUTION WITH EVO TECHNOLOGY
Harnessflex EVO™ (Electric Vehicle Orange) conduit represents a breakthrough in cable protection for electric vehicles. Manufactured in distinctive RAL2003 orange to clearly identify high-voltage cables, this flexible nylon (PA6) conduit withstands extreme temperatures from -40°C to +150°C and resists automotive oils, fuels, and chemicals. The high-visibility orange color meets emerging EV safety standards requiring clear identification of high-voltage wiring, protecting service technicians and first responders. EVO conduit maintains flexibility across temperature extremes while providing superior abrasion resistance and flame retardancy.
When Munro Vehicles set out to build the UK's first all-electric 4x4 off-road vehicle, they turned to Harnessflex EVO™ conduit systems to protect their high-voltage wiring. The Munro MK_1 required routing solutions that could handle 800-volt systems while withstanding extreme off-road conditions. Harnessflex provided complete system solutions including EVO conduit, specialized fittings, and connector interfaces that maintained maximum bore for efficient cable routing.
The partnership demonstrates how Harnessflex innovation supports next-generation vehicle development. Beyond EVO, Harnessflex continues advancing conduit technology with enhanced UV resistance formulations, improved chemical resistance for biodiesel and alternative fuels, and expanded temperature ranges. The commitment to solving real-world engineering challenges has made Harnessflex the go-to choice for manufacturers pushing the boundaries of vehicle technology.
Munro Success Story
COMPLETE SYSTEM SOLUTIONS FROM SCORCHING DESERTS TO FREEZING TUNDRAS
For 40 years, Harnessflex has delivered complete system solutions for routing and protecting critical wiring in extreme environments. From construction sites to electric vehicles, Harnessflex conduit systems provide unmatched durability and performance.
The comprehensive product range includes flexible nylon conduit in multiple sizes, split and unslit configurations, sealed and unsealed fittings, connector interfaces for major automotive connectors, and specialized accessories. This complete system approach ensures compatibility, simplifies specification, and reduces installation time while maintaining maximum conduit bore for efficient cable routing.
Harnessflex products meet rigorous international standards including IP67/IP68 ingress protection, ADR approval for hazardous goods transport, RoHS compliance, and conformity with End of Life Vehicle (ELV) directives. The polyamide (nylon) 66 construction delivers exceptional mechanical strength, chemical resistance, and temperature performance from -40°C to +150°C. UV-resistant formulations ensure long-term outdoor performance without degradation. Self-extinguishing properties with low smoke toxicity and halogen-free composition meet stringent fire safety requirements. Harnessflex fittings feature innovative designs including external snap-together construction that maintains unrestricted bore, high pull-off strength through corrugation interlocking, and 360° swivel capability on elbow fittings for flexible routing.
Constantly evolving through innovation driven by demanding automotive industry sectors, Harnessflex products are designed to work together as complete system solutions—delivering the protection modern vehicles demand.
WHY HARNESSFLEX? BECAUSE YOUR WIRING DESERVES THE BEST PROTECTION.
<p>For 40 years, Harnessflex has delivered complete system solutions for routing and protecting critical wiring in extreme environments. From construction sites to electric vehicles, Harnessflex conduit systems provide unmatched durability and performance.</p>
Complete system solutions
<p>Harnessflex offers integrated conduit systems, fittings, and connector interfaces designed to work together seamlessly, maintaining maximum conduit bore and ensuring consistent protection throughout your wiring harness.</p>Extreme temperature performance
<p>From standard systems (-40°C to +150°C) to X-Temp solutions operating up to 200°C, Harnessflex protects wiring in the hottest engine bays and coldest climates.</p>Heavy EV protection
<p>Harnessflex EVO™ orange conduit systems are specifically engineered for high-voltage EV applications, offering flame retardancy, extreme temperature resistance, and clear visual identification for safety compliance.</p>Superior chemical resistance
<p>Resistant to automotive oils, fuels, coolants, and harsh chemicals, Harnessflex conduits maintain integrity in environments where exposure to aggressive substances is constant.</p>IP67-IP68 sealing protection
<p>Sealed fittings with SRN sealing bushes protect against water and dust ingress, tested to IP68 standards (2 bar for 30 minutes), ensuring reliable performance in wet and dirty conditions.</p>Connector interface expertise
<p>With decades of connector interface design experience, Harnessflex offers high-integrity connections for Deutsch, Molex, and other major automotive connectors, with split external designs for quick, tool-free assembly</p>Compliance & safety standards
<p>All Harnessflex components comply with End of Life Vehicle (ELV) directive EU2000/53/EC, are RoHS compliant, CE marked, self-extinguishing, and feature low smoke toxicity and halogen-free materials.</p>UK manufacturing heritage
<p>Manufactured and tested at ABB's Coleshill, UK facility for over 40 years, every Harnessflex product meets stringent quality standards backed by British engineering excellence and ABB's global reputation.</p>HOW WE HELP
Products
Harnessflex® Conduit Systems for Heavy Automotive Wiring Harnesses
ABB's Harnessflex specialist conduit systems deliver complete routing and protection solutions for critical electrical wiring in heavy automotive and off-road applications. Combining flexible conduits, hinged fittings, connector interfaces and sealed fittings, the Harnessflex range safeguards wiring assemblies against mechanical abrasion, liquid ingress and corrosion.
- Products
- Industries
INDUSTRIES WE SUPPORT
From residential construction to commercial and industrial projects, our products support professionals across diverse industries.
Machine building, Rail and transit, Shipbuilding, OEM, Industrial
FREQUENTLY ASKED QUESTIONS
Harnessflex EVO™ (Electric Vehicle Orange) is specialized conduit manufactured in distinctive RAL2003 orange to clearly identify high-voltage cables in electric and hybrid vehicles. This high-visibility color meets emerging safety standards requiring clear identification of high-voltage wiring, protecting service technicians and first responders while providing superior temperature and chemical resistance.
Harnessflex polyamide (nylon) 66 conduit operates reliably from -40°C to +150°C, maintaining flexibility and protection across extreme temperature ranges. This performance makes Harnessflex ideal for engine compartments, arctic operations, desert environments, and any application where temperature extremes challenge conventional cable protection systems.
Split conduit features a lengthwise slit allowing it to be opened and snapped around existing cables without disconnecting them. This design is essential for retrofit, repair, and service applications where cables cannot be easily accessed from the ends. Standard unslit conduit provides maximum protection for new harness assembly.
Harnessflex offers pre-engineered connector interfaces for Deutsch DTP04, Molex MX93286, AMP, and other major automotive connector series. These interfaces snap together over conduit maintaining maximum bore, provide 360° swivel on elbow versions, and eliminate the need for custom adaptors—streamlining harness assembly and installation.
Yes. Harnessflex EVO™ conduit is specifically engineered for electric and hybrid vehicles, providing high-voltage cable identification through distinctive orange color, superior temperature resistance (-40°C to +150°C), excellent chemical resistance, and compliance with automotive safety standards including RoHS and ELV directives.