Upgrade

MIL-Spec Autosport Connector

+$350 Add-On

Upgrade your SVK harness with a MIL-Spec Autosport connector for a clean, professional firewall pass-through. This connector allows the engine harness to disconnect completely from the chassis side, making engine pulls fast and painless — just unplug and go.

  • Genuine Autosport connector — motorsport-grade
  • Metal mounting plate included for firewall pass-through
  • Quick-disconnect for fast engine removal
  • Sealed and weatherproof connection
  • Clean, professional appearance
  • Available for MK4 Supra, MK3 Supra, and Lexus SC
  • 1-year warranty on workmanship

What's Included

The MIL-Spec connector upgrade includes the Autosport connector pair (engine side and chassis side), a CNC-cut metal mounting plate for a clean firewall pass-through, and all pins crimped and assembled. This is integrated directly into your SVK harness build — not a separate kit.

1-Year Warranty: Backed by a 1-year warranty covering defects in materials and workmanship. See our FAQ for full warranty details.

Available as Harness Add-On Select During Build
Details

How It Works

A MIL-Spec Autosport connector is a multi-pin circular connector used in motorsport and military applications. It provides a single, sealed disconnect point between the engine harness and the chassis harness, allowing the entire engine loom to be separated cleanly at the firewall.
It's not required — SVK harnesses work perfectly without it. However, if you plan on pulling the engine regularly (track car, ongoing build, or frequent maintenance), the quick-disconnect saves significant time. It also gives the engine bay a clean, professional finish.
The metal mounting plate bolts to the firewall and holds the Autosport connector in place. It provides a secure, vibration-resistant mount point and creates a sealed pass-through between the engine bay and interior. The plate is CNC-cut for a precision fit.
Select "Yes" under the Milspec Autosport Connector option in the harness build calculator on your vehicle's page. The connector is integrated into the harness during the build — it's not a separate add-on kit. You can also mention it in the notes when emailing your build request.
The MIL-Spec connector option is available for all SVK harness platforms: MK4 Supra (JZA80), MK3 Supra (MA70), and Lexus SC300/SC400/Soarer (Z30).