Caterpillar Ignition Switch 163-2659 with 2 Keys for 416B, 446B & TH Telehandlers
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
| Brand / Family | Compatible Applications |
|---|---|
| Caterpillar backhoe loaders | 416B, 446B |
| Caterpillar telehandlers | TH62, TH63, TH82, TH83, TH103 |
Product Overview
The switch provides the operator's keyed electrical control for OFF/RUN/START circuits. Worn internal contacts can cause intermittent accessory power, no-crank complaints or a key that must be held or moved to maintain connection.
Caterpillar used multiple switch/connector arrangements across machine generations.
Key Features & Performance
- Machine-control input: Provides the electrical state change used by the machine's start, safety or emergency-control circuit.
- Exact configuration matters: Contact arrangement, connector/terminals, actuator style and mounting must match the original switch.
- Functional testing required: After replacement, verify that the associated control or safety circuit changes state correctly.
- Product-specific note: Caterpillar used multiple switch/connector arrangements across machine generations.
Technical Specifications
- Component: Keyed ignition / start switch
- Keys: 2
Replaces / Reference Part Numbers
163-2659, 1632659, 110-7883, 3E-7341
Common Replacement Reasons
- Intermittent or open electrical contacts
- Damaged actuator/key mechanism
- Safety/start circuit diagnosis identifies the switch as the failed input
Frequently Asked Questions
How do I confirm this is the correct part?
Match 163-2659 or a listed cross-reference plus the connector/terminal layout on your machine.
Is this an OEM part?
Unless the listing is explicitly identified as genuine/OEM in the product data, treat it as a replacement component. Use the verified reference numbers, equipment application and physical configuration above to match your original part.
What should I check before installation?
Inspect the rear terminal/connector pattern before removing the original switch.
Fitment note: Equipment manufacturers may use different components within the same model family based on engine, serial number or production date. Confirm the original part number and machine/engine details before ordering.