Key Switch Fit for Farmall IH 424 4366 4386 444 815 915 504 615 664 666 686 715

Key Switch for Farmall IH

This Key Switch for Farmall IH combines reliable electrical contact with straightforward rotary operation, making it the correct replacement for many International Harvester tractor models. It is designed to restore quick, dependable starting across a broad range of vintage farm equipment.

Overview

This Key Switch for Farmall IH is a direct-acting electrical switch that controls the ignition circuit on a wide array of International Harvester tractors. It delivers consistent, reliable starts for models ranging from compact utility tractors to large 4WD articulated machines.

Built For Performance

• Rotary contact design provides positive, repeatable switching action
• Metal housing resists vibration and corrosion in harsh field conditions
• Insulated terminals prevent shorts and ensure a stable electrical connection
• Standard key pattern offers easy replacement with existing keys
• Compact footprint fits original dash openings without modification

Fits These Machines

• for Farmall 424
• for Farmall 444
• for Farmall 504
• for Farmall 615
• for Farmall 664
• for Farmall 666
• for Farmall 686
• for Farmall 715
• for Farmall 815
• for Farmall 915
• for International 4366
• for International 4386

On-The-Job Use

• Start and stop the engine repeatedly during daily field operations
• Operate in dusty or muddy environments where sealed components are essential
• Replace a worn or broken switch during routine maintenance or emergency repair
• Wire into a custom harness for restoration projects on vintage IH tractors

Specs At A Glance

Good To Know

Q: Will this key switch fit my tractor if the original had a different key style? A: This switch uses a common key pattern, but always verify the mounting hole size and terminal layout against your original unit before ordering.

Q: Does this switch include the key? A: Yes, the switch comes with a matching key, but you can also use your existing key if it matches the same profile.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.