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SPM-HEP-4161 is the key start switch with its wiring lead, plug and two keys. It is used on Kubota BX series compact tractors. This aftermarket version has the same mounting and electrical connector as the original, so it plugs in and bolts on where the old one came off.
It replaces Kubota 66101-55200 and Kubota 37410-59110.
Sold as one unit. Check the number on your old part, or in the parts manual for your machine, before ordering.
| Part Type | Ignition Switch |
| Replaces | Kubota 66101-55200 |
| Switch type | Key start switch with lead and plug |
| Supplied with | Two keys |
| Cross references | Kubota 37410-59110 |
| Fits | Kubota BX1500D, BX1800D, BX1830D, BX2200D, BX2230D, BX22D and BX23D tractors |
| Condition | New, aftermarket |
| Stat. HS-Code | 853650 |
| Country of Manufacture | China |
Kubota machines
Check the part number on your old unit before ordering.
| Kubota Part No.(SPM Part No.) | Fits |
|---|---|
| 66101-55200(SPM-HEP-4161) | Kubota BX1500D, BX1800D, BX1830D, BX2200D, BX2230D, BX22D and BX23D tractors |
| Brand | Part No. |
|---|---|
| Kubota | 66101-55200 |
| Kubota | 37410-59110 |
All of these numbers are the same part.
Machine will not start or power up
A worn key or selector switch is a common cause of no-start faults once the batteries and fuses check out.
Intermittent faults
Switches that have to be held or jiggled will fail completely soon. Replacing them is a quick job.
Water and dirt
Cab and dash switches take water and dust. A corroded switch is cheaper to replace than to chase.
Fleet spares
A spare switch for each machine type keeps a machine working instead of waiting for parts.
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller | Price | Checked |
|---|---|---|
| eBay (6 aftermarket sellers) | USD 24.93 to 45.00 | 25 Oct 2026 |
| FridayParts | USD 27.83 | 24 Oct 2026 |
| HTS Spares | USD 59.36 | 24 Oct 2026 |
| Spare Part Mart | USD 22.26 | Today |
Our price of USD 22.26 is 11% to 62% less than these sellers.
Found this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our Price Beat Guarantee. Every order is also covered by our 30 day money back guarantee.
No. It is an aftermarket part made to fit in place of Kubota 66101-55200. It is not made by or affiliated with Kubota; the Kubota part number is used only to show what it replaces.
It fits Kubota BX1500D, BX1800D, BX1830D, BX2200D, BX2230D, BX22D and BX23D tractors. Machines change parts between serial number ranges, so check the number on your old part or in your parts manual.
It has the same mounting and electrical connector as the original. Check the plug and terminals match your old part, and test it before putting the machine back to work.
Yes, we ship worldwide. Shipping is calculated at checkout, and every order is covered by our 30 day money back guarantee and price beat guarantee.
Prices depend on your ZIP or postcode.
Live rates for the quantity selected, delivered to your door. Confirmed at checkout.
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Join Marty Mates and we put 200 points on your account, worth $10 off an order over $75 USD. Then a point for every dollar you spend after that.
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