M5X/S5X E36 Engine Harness

*Once your order is placed we will reach out to you via email to confirm all necessary components for your harness. Every harness is built to order*

Tailored for the M5X/S5X engines in E36 harness is designed for maximum reliability, clean integration, and OEM-level functionality while meeting modern motorsport standards. This harness offers exceptional resistance to heat, abrasion, chemicals, and vibration.

This harness is specifically designed for ECUs mounted in the OEM factory location only. We utilize the original BMW plastic housing mounted under the cowl, ensuring a factory-style installation and proper weather protection. All connectors used are brand-new, eliminating the issues commonly found with aging OEM wiring and terminals.

For any modifications such as different ECU mounting location or any other special requests, please contact us directly before placing your order.

The harness retains the factory X20 connector (optional) on both OBD1 and OBD2 platforms, allowing seamless integration with the chassis while preserving critical OEM functions such as the factory instrument cluster and A/C operation. X20 can be deleted if you have a PDM.

Ideal for street, track, or motorsport builds where OEM functionality and mil-spec durability are equally important, this harness delivers a clean, professional solution without compromise.

Features:

• Tefzel M22759/32 Cross-linked
• Raychem DR-25
• Raychem Shrink Boots
  
• Concentric Twisted
• Vanos Control
  
• Boost Control
• Launch Control
• Rolling Anti-Lag
• Anti-Lag
• Fan Control
• R8 Ign Coil
• Injector Dynamics
  
• DBW or Cable
• Ethanol Sensor
• Labeled connections
• Designed ONLY for ECUs mounted in the OEM location
  
• Retains factory X20 connector (OBD1 & OBD2) and harness cover (optional)
• Preserves OEM functions such as cluster and A/C (optional)