Yanmar fuel sensor with part number 121857-55730. This sensor is used on the diesel filter to detect water in the fuel. For Yanmar JH common rail engines, this sensor is used on the pre-filter. For 4LH(A)TE and 4LH(A)-HTE engines, it is used on the fine filter. Fits Yanmar engines including: 4JH45-CR, 4JH57-CR, 4JH80-CR, 4JH110-CR, 4LH TE, 4LH HTE and 4LHA HTE. Always check the part number and filter setup before ordering.
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