Wolf V4x Motorsport Wiring Loom

Motorsport-grade ETFE (MIL-W-22759/16) wiring loom engineered specifically for the Wolf V4x Engine Control Unit.

This wiring loom is designed for builders who require a reliable, professional-grade electrical foundation for a Wolf V4x–controlled engine. Hand-built using MIL-W-22759/16 motorsport-grade ETFE wire, it is intended for performance street and motorsport applications where heat, vibration, and electrical noise are part of the operating environment.

The Wolf V4x is a compact standalone ECU suited to a wide range of performance applications, and this loom removes the compromises commonly found in universal or automotive-grade wiring.

Designed Specifically for Wolf V4x

This loom is pinned exclusively for the Wolf V4x ECU. Every circuit is allocated correctly for the ECU’s engine management inputs, outputs, power supply, and communications — with no universal pinouts, repurposed circuits, or guesswork.

The result is a clean, predictable wiring system that supports stable ECU operation, accurate sensor data, and long-term electrical reliability.

Built Using Motorsport-Grade ETFE Wire (MIL-W-22759/16)

MIL-W-22759/16 ETFE wire was originally developed for aerospace and military applications and is ideally suited to performance and motorsport wiring environments.

Key benefits include:

• Excellent resistance to heat, fuels, oils, and automotive chemicals

• Thin, lightweight insulation for compact, tidy looms

• High durability under vibration and continual movement

• Reduced risk of insulation degradation over time

This wire is selected for reliability — not cost.

Terminated or Unterminated Options

This Wolf V4x loom is supplied in an unterminated (flying lead) configuration as standard, allowing complete flexibility for engine layout, injector and ignition configuration, and harness routing.

A pin placement sheet showing wire numbers is available to download to assist with installation.

Custom terminations, wire lengths, and additional provisions can be discussed prior to ordering if required.

Suitable Applications

This loom is suitable for:

• Performance street vehicles

• Track day and club-level motorsport

• Engine swaps and custom conversions

• Turbocharged and naturally aspirated engines

• Professional workshops and performance fabricators

This is not a vehicle-specific plug-and-play harness. It is intended for custom installations where control, reliability, and electrical integrity matter.

What’s Included

• Wolf V4x ECU connector(s)

• Pre-wired ETFE (MIL-W-22759/16) wiring loom

• Built to order and quality checked prior to dispatch

Sensors, actuators, and the ECU are not included.

Lead Time

Each loom is hand-built to order. Typical lead time is displayed at checkout and may vary during busy periods.

If your build has a deadline, please contact us prior to ordering.

Built to Support Proven Wolf Engine Management Systems

The Wolf V4x is a proven standalone ECU used in a wide range of performance applications. This loom is built to support it properly — without shortcuts, compromises, or unnecessary complexity — while maintaining professional motorsport wiring standards.

Select options above or contact us to discuss custom requirements.

Legal Notice

Wolf EMS® is a registered trademark of Wolf Engine Management Systems. This product is not affiliated with or endorsed by Wolf EMS.