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SKU:
NLT1G01086
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Ignition Key Switch for Kubota B4200 B5100 B6100 Compact Tractors
$48.99
In Stock
$48.99
Sale price
$48.99
Regular price
Restore key-on and start control on compatible Kubota B4200, B5100, and B6100 compact tractors with a replacement ignition switch.
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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
- Kubota B4200D
- Kubota B5100D-P
- Kubota B5100E-P
- Kubota B6100D-P
- Kubota B6100E-P
- Kubota B6100HST-D
Product Overview
A tractor that starts only when the key is held just right, loses dash power, or has a loose and worn switch may need more than a battery clean-up. This switch is for the older Kubota B-series applications listed below when the connector, terminals, and original number match.
Neutral and clutch safety switches, a weak starter circuit, or corroded wiring can cause the same no-start. Test those parts before replacing the key switch.
This is an aftermarket replacement part and is not manufactured or supplied by the original equipment brand.
Key Features & Performance
- Replacement ignition switch for select early Kubota B-series tractors
- Restores distinct off, run, heat, and start positions where equipped
- Useful for worn contacts, damaged terminals, or loose key action
- Includes keys as supplied
Replaces Part Numbers
- 66711-55120
- 66711-55122
- 66706-55120, only when the original switch and terminals match
Common Uses
- Repairing intermittent key-on power
- Replacing a switch that will not hold the correct position
- Correcting a confirmed open start or preheat contact
- Replacing damaged rear terminals
Technical Specifications
- Product Type: Tractor ignition key switch
- Application: Select Kubota B-series tractors
- Fitment Check: Part number, terminals, and key positions
- Replacement Type: Aftermarket
Installation & Fitment
- Disconnect the battery
- Photograph and label every terminal before removal
- Compare terminal count and markings to the original switch
- Inspect the harness for heat or corrosion
- Test preheat, run, start, and safety-interlock operation after installation
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown. Model names alone may not guarantee fitment. Compare the original component, reference number, connector or mounting design, dimensions, and any serial-number or production-date break before purchase.
Frequently Asked Questions
Q: Can the ignition switch cause a no-start? A: Yes, but battery cables, safety switches, relays, and the starter circuit should also be tested.
Q: Does it fit every B6100? A: No. Match the original part number, terminal layout, and tractor configuration.
Q: Why are two similar part-number families listed? A: Older listings can cross similar switches. The physical switch and original number must agree before ordering.
Part Summary
keywords: Kubota B6100 ignition switch, B5100 key switch replacement, B4200 tractor no start, 66711-55120 aftermarket, Kubota preheat start switch, compact tractor electrical repair
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.