BMW M54 - PnP Wiring Harness Adapter [For BMW E39, E46, Z3]

BMW M54 - PnP Wiring Harness Adapter [For BMW E39, E46, Z3]

Regular price$450.00

  • World Wide Shipping available.
  • Assembled & Customised to order.

The easiest way to convert you're old, outdated engine harness to brand new technology.

Harness is for use with an ECU Master BLACK ECU Only.

ECU Master ECU's are exceptionally reliable, well-priced and a huge range of accessories, digital displays and features. We install them on every car coming through out shop.

This Plug-In Harness Adapter is for all  Dual Vanos BMW M54 engines. 

Also includes leads for a LSU 4.2 Wideband 02 Sensor and two fuses for ECU and Wideband Protection.

Contact us for pricing to include additional leads for sensors such as Oil Pressure, Oil Temperature, Water Temperature, Boost Valve's and more. 

ECUMaster distributors for your country can be found here:

Most of our products are made-to-order before being shipped out.

This product is for off-road use only.

Redux Racing is not responsible for damage to your car or engine, or resultant injuries to persons.

Use at your own risk.

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Assembled In-House

Every kit is designed and assembled in our workshop to ensure it matches our strict standards and performs perfectly.

Proven & tested

Street, drags, show and track, since 2012 our kits have clocked thousands of laps and millions of miles.

money back guarantee

If you're not 100% satisfied you can send it back for a full refund, including shipping costs, for 12 months after purchase.


SEMA 2022 & 2023.

Let the crowd decide. 2023 @Built.By.Rich and 2022 @goodshow_aa

perfected for performance

Thousands of hours of research, hundreds of designs and dozens of tested vehicles, we make sure all and every kit performs to a world class standard.

smoother idle

By eliminating cylinder cross-talk, very aggressive cams can be run without low RPM stalling and with reduced lumpiness.

Instant throttle response

By giving the intake air a short and direct path into the chamber, the throttle response becomes lightning quick.

increased power

By allowing each cylinder to consume the same and maximum amount of air, your engine can be run at its optimum performance.

Engineered with precision.

Each model kit has undergone serious testing with proven results

BMW M50 / M52 ITB Kit
Designed with Intention

Every kit bolts directly on, no fabrication and no additional brackets required.

Easily assembled with basic hand tools, be up and running in a matter of hours.

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