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SKU:
ZZ3F08674
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F0NN11N501AA Ignition Key Switch for Ford Tractor 5640 6640 7740 7840 8160 8240
$96.39
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$96.39
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$96.39
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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.
Compatible equipment / model
Ignition Key Switch for Ford Tractor
This ignition key switch replaces the original F0NN11N501AA part and restores key-controlled starting and electrical power for Ford tractor models. It is built to meet the original mechanical and electrical interface requirements. The switch is designed for Ford 5640, 6640, 7740, 7840, 8160, and 8240 tractors.
Overview
This ignition key switch is a direct replacement for OEM part number F0NN11N501AA on Ford tractors. It controls the flow of battery power to the starter, ignition, and accessory circuits, allowing reliable engine start and shutdown. The switch is a suitable repair component for Ford 5640, 6640, 7740, 7840, 8160, and 8240 models.
Built For Performance
- Replacement for OEM cross-reference F0NN11N501AA
- Precision machined key cylinder for secure engagement
- Snap-action contacts for crisp start and run positions
- Sealed back cover protects against dust and moisture ingress
- Matching thread and mounting diameter for stock panel fit
- Rated for continuous 12-volt electrical loads
Fits These Machines
- for Ford 5640
- for Ford 6640
- for Ford 7740
- for Ford 7840
- for Ford 8160
- for Ford 8240
On-The-Job Use
- Replaces faulty switches that cause no-crank or intermittent power loss
- Used during engine electrical system repair on utility tractors
- Supports daily operation including loader work, mowing, and PTO tasks
- Practical for farm and ranch maintenance shops
Specs At A Glance
| Part Number(s) | F0NN11N501AA |
| Product Type | Ignition Key Switch |
| Voltage | 12V DC |
| Key Positions | Off / Run / Start |
Good To Know
Q: What does F0NN11N501AA cross-reference to? A: F0NN11N501AA is the original Ford part number for this keyed ignition switch. This replacement matches that number and is intended for the listed Ford tractor models.
Q: Is the switch difficult to install? A: Installation typically involves removing the old switch from the dash panel and plugging in the new unit. Verify that the wiring harness connector matches your tractor's configuration before final mounting.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.