1965–1966 Chevrolet Pickup Truck Series 80 & Heavy Duty GMC NOS Ignition Switch #1116658

Available for sale is a genuine General Motors New Old Stock (NOS) Ignition Switch, GM part number 1116658, designed for 1965–1966 Chevrolet Series 80 trucks and select heavy-duty GMC truck applications. This original GM service replacement component is a rare and highly desirable electrical part for restorers seeking factory-correct ignition system components for classic commercial and heavy-duty trucks.

The mid-1960s Chevrolet and GMC heavy-duty truck lineup was engineered to handle demanding commercial, agricultural, industrial, and municipal workloads. Known for their rugged construction, dependable drivetrains, and long service life, these trucks played a vital role in transportation and commerce throughout North America. Today, surviving examples are highly valued by collectors, restoration specialists, and vintage truck enthusiasts.

The ignition switch is a critical component of the vehicle’s electrical system. It controls the flow of electrical power to the ignition circuit, starter system, and accessory functions, allowing the vehicle to start and operate properly. In heavy-duty truck applications, dependable ignition performance is especially important for reliability and daily operation.

Over time, original ignition switches can experience wear due to repeated key use, internal contact deterioration, corrosion, and age-related electrical fatigue. Common symptoms include intermittent starting problems, loss of accessory power, electrical interruptions, or complete ignition failure.

This component is a true New Old Stock (NOS) GM service replacement part, meaning it was manufactured during the original production era and has never been installed on a vehicle. It retains original factory specifications, materials, and engineering standards intended for proper fitment, durability, and long-term performance.

Unlike many modern aftermarket replacements, NOS GM ignition switches feature authentic construction, factory-correct terminals, and original design characteristics. This ensures compatibility with original wiring systems and helps preserve the authenticity of a restoration project.

For collectors and restorers, maintaining original GM electrical components is important for both operational reliability and historical accuracy. Whether restoring a heavy-duty work truck, commercial hauler, farm truck, or municipal vehicle, this ignition switch helps preserve factory-correct functionality.

As original GM heavy-duty truck electrical components become increasingly difficult to source, NOS parts such as this ignition switch continue to be highly sought after by collectors and restoration professionals.

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Product Features

• Genuine General Motors New Old Stock (NOS) part
• GM Part Number: 1116658
• Ignition Switch Assembly
• Designed for 1965–1966 Chevrolet Series 80 trucks
• Fits select heavy-duty GMC truck applications
• Factory-correct fit, appearance, and operation
• Controls ignition, starter, and accessory circuits
• Original GM service replacement component
• Never installed on a vehicle
• Ideal for restoration and electrical system repair
• Rare heavy-duty truck electrical component

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Vehicle Compatibility

Fits select:

• 1965 Chevrolet Series 80 Truck
• 1966 Chevrolet Series 80 Truck
• Select 1965–1966 GMC Heavy-Duty Truck Models

Compatibility may vary depending on chassis, cab configuration, and electrical system specifications. Buyers should verify fitment before purchase.

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Condition

This component is offered in New Old Stock (NOS) condition. It has never been installed and remains an original GM service replacement part. Due to decades of storage, minor shelf wear, packaging aging, light oxidation, or cosmetic imperfections may be present.

Please review all available photographs carefully to determine the exact condition of the item being offered.

For collectors and restoration enthusiasts seeking authentic GM electrical components, this 1965–1966 Chevrolet Series 80 & Heavy Duty GMC NOS Ignition Switch #1116658 represents an excellent opportunity to restore factory-correct functionality, preserve originality, and maintain the long-term value of a classic heavy-duty truck restoration.