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Aftermarket parts may appear slightly different, including the packaging.
121575-91250 Key Switch For Yanmar 4JH3-TE And 4JH3E Diesel Engines
$285.20 USD$316.89 USDSAVE 10%
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Keep your Yanmar diesel engine running with this key switch — OEM part number 121575-91250. It fits Yanmar 4JH3-TE, 4JH3E, 4JHE, 4JH3 engines.
Delta Diesel Parts is a U.S.-based supplier of Yanmar diesel engine parts, with most in-stock orders shipping the same day and knowledgeable support staff to help you when it's needed.
| Part Number | YM12157591250 |
| OEM Number | 121575-91250 |
| Part Type | Sensors and Switches |
| Specification | Genuine Key Switch for Yanmar 4JH3-TE, 4JH3E, and 4JHE engines |
| OEM Brand | Yanmar |
| Compatible Models | 4JH3-TE, 4JH3E, 4JHE, 4JH3 |
Sale price
$285.20 USD
Regular price
$316.89
Unit price
Unavailable
Feb 12, 2026
Great service provided.
Order was received prior to expected date. Really appreciate the urgency given.
Jan 28, 2026
Exceeded Expectations!
Even though my parts were not in stock, they were ordered and delivered ahead of expected time. Will order from them again.
Jan 5, 2026
Excellent, friendly service.
This is my new go to business for Yanmar parts. I highly recommend it.
