For Jeep Wrangler JK/JL/JT Complete Engine & Transmission Wiring Harness Kit

This complete wiring harness kit is specially designed for Jeep models originally equipped with 2.0L or 3.6L engines that are upgraded to high-displacement HEMI engines (5.7L, 6.2L, or 6.4L).

The kit includes:

Engine wiring harness – covers ignition system, fuel injection, sensors, and ECU connections.

Transmission wiring harness (JK only) – designed to integrate with the factory 5-speed automatic transmission used in Jeep Wrangler JK.

Built with high-performance Teflon (PTFE) insulated wiring, this harness is designed to operate reliably in extreme temperatures ranging from -65°C to 200°C (-85°F to 392°F). The PTFE insulation offers exceptional heat resistance, chemical resistance, and abrasion resistance, ensuring long-term durability and stable signal transmission even in harsh engine bay environments. The true plug-and-play design minimizes wiring complexity, reduces installation errors, and significantly speeds up the engine swap process.

Vehicle Compatibility:

• Jeep Wrangler JK – Includes transmission wiring harness for connection with the factory 5-speed automatic transmission.
• Jeep Wrangler JL – Does not include transmission wiring harness. JL applications require the use of the OEM JT transmission wiring harness.
• Jeep Gladiator JT – Uses the vehicle’s original transmission wiring harness.

All models are designed for vehicles originally equipped with 2.0L or 3.6L engines and upgraded to 5.7L / 6.2L / 6.4L HEMI engines.

Packaging Specifications:

Complete engine & transmission wiring harness kit × 1

Protective packaging

Accessory Type: Direct Installation (Plug & Play), no additional modification required.

DELIVERY POLICY: most of the countries will arrive within 5 working days. Some countries may be delayed, please contact us in advance.

Shipping: Not included. Users can place orders directly and the system will automatically calculate shipping costs. 

Tariffs: For users in other countries, taxes are not included. Please contact us first.

Pre-Order Note: If you want to sell our products in your country, please contact us for agent policy.