Dorman 645-940 Ignition Coil Connector

Reliable Ignition Coil Connector for Select Toyota and Lexus Models

The Dorman 645-940 ignition coil connector is designed to provide a secure and reliable electrical connection for ignition coils in various Toyota, Lexus, Chevrolet, and other compatible vehicles. Engineered with precision, this connector ensures consistent performance in your vehicle's ignition system.

• Wiring harness length: 19.45 inches for flexible installation
• Wire gauge measurement: 14 AWG for optimal current flow
• Four wires and four female blade terminals for secure connections
• Terminals made of phosphor bronze with tin plating for corrosion resistance
• Includes one pigtail connector for easy replacement

Durable Design and Technical Specifications

The Dorman 645-940 ignition coil connector features a 19.45-inch wiring harness with 14-gauge wires, providing sufficient thickness to handle ignition coil electrical demands. The connector uses female blade terminals made from phosphor bronze with tin plating, which offers good conductivity and resistance to corrosion, although it is not weather resistant. This part is compatible with a wide range of vehicles including Toyota 4Runner, Camry, Corolla, Lexus ES300, RX350, and Chevrolet H3 models, among others. The four-wire, four-terminal design ensures a stable and reliable connection to the ignition coil, helping maintain proper engine performance.

Compatible Vehicles and Applications

This ignition coil connector is compatible with multiple makes and models, including:

• Toyota 4Runner, Camry, Corolla, Tacoma, Highlander, Prius, and more
• Lexus ES300, ES330, ES350, GS300, RX350, LS430, LX470, and others
• Chevrolet H3 and H3T
• Hummer H3 and H3T
• Scion tC, xA, xB, and xD

Common Issues Addressed by This Connector

• Intermittent ignition coil connection causing engine misfires
• Damaged or corroded ignition coil wiring harness
• Electrical shorts or open circuits in ignition coil wiring
• Replacement of worn or broken ignition coil connectors
• Improving ignition system reliability in older vehicles

Installation Notes and Tips

When installing the Dorman 645-940 ignition coil connector, ensure the vehicle’s ignition is off and the battery is disconnected to prevent electrical shock. Verify the connector terminals align correctly with the ignition coil terminals. Use appropriate tools to secure the blade terminals firmly without damaging the wiring. The 19.45-inch harness length provides flexibility for routing and connection. Inspect the wiring for any signs of wear or damage before installation to ensure optimal performance.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 645-940 ignition coil connector is constructed with durable materials such as phosphor bronze tin-plated terminals to resist corrosion and maintain electrical integrity. While this connector is not weather resistant, it is designed for reliable indoor engine compartment use. Dorman offers a limited warranty on this part, covering defects in material and workmanship under normal use conditions.