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Spool Performance B58/S58 Plug and Play Ethanol Sensor Harness Connect our ethanol sensor harness to your ethanol sensor and your fuel controller. Our harness makes everything seemingly plug and play, no splicing or cutting of any wires. One side connects straight on the GM ethanol sensor and the other side connects onto your secondary controller harness.
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We currently ship within the US, with more countries coming soon.
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🇺🇸 Ship from USA · On Agora since 2025
$24.99