{"product_id":"ntk-wideband-oxygen-sensor-554-100","title":"NTK Wideband Oxygen Sensor 554-100","description":"\u003cp\u003eReplacement Holley EFI NTK Wide band Oxygen sensor. This sensor is a direct replacement for Holley HP, Dominator, Avenger and Terminator EFI systems. Each Sensor is hand calibrated to insure accurate readings when used in conjunction with your Holley EFI system.\u003c\/p\u003e\n\u003cp\u003eAlso compatible with 2nd Gen C950 or Holley EFI.\u003c\/p\u003e\n\u003cp\u003eReplaces Part # 534-194\u003cbr\u003eFeatures:\u003cbr\u003eDirect replacement for Holley HP, Dominator, Avenger and Terminator EFI systems\u003cbr\u003eHand calibrated for precise and accurate air to fuel ratio measurements\u003cbr\u003ePlug and Play with no harness splicing necessary\u003cbr\u003eWeatherproof connector keeps out debris and moisture\u003c\/p\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":49509616025838,"sku":"HLY-554-100","price":382.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/9110\/6798\/files\/Screenshot2026-08-27225603.png?v=1787889379","url":"https:\/\/elmosspeedshop.com\/products\/ntk-wideband-oxygen-sensor-554-100","provider":"Elmo's Speed Shop","version":"1.0","type":"link"}