{"product_id":"ntk-upstream-oxygen-sensor-1985-1989-aw11-mr2","title":"AW11 NTK Upstream Oxygen Sensor | 4A-GE \/ 4A-GZE (1985-89 MR2)","description":"\u003ch2\u003eNTK Upstream Oxygen Sensor\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eFor 1985–1989 U.S.-Market Toyota MR2 AW11 with 4A-GE or 4A-GZE, depending on configuration\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003edirect-fit NTK oxygen sensor\u003c\/strong\u003e replaces the upstream sensor used by the original fuel-control system. Its zirconia sensing element measures residual oxygen in the exhaust so the engine computer can adjust the air-fuel mixture.\u003c\/p\u003e\n\u003cp\u003eThree application-specific versions cover the verified U.S.-market AW11 applications in this listing: \u003cstrong\u003e1985–1987 4A-GE one-wire unheated\u003c\/strong\u003e, \u003cstrong\u003e1988–1989 4A-GE four-wire heated\u003c\/strong\u003e, and \u003cstrong\u003e1988–1989 4A-GZE Supercharged four-wire heated\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNarrowband zirconia sensing\u003c\/strong\u003e for the upstream fuel-feedback circuit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect-fit terminated connector\u003c\/strong\u003e for each verified application\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication-specific harness length and mounting arrangement\u003c\/strong\u003e to match the factory sensor configuration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-wire unheated and four-wire heated versions\u003c\/strong\u003e matched to the appropriate AW11 engine and year application\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eToyota MR2 (AW11 \/ MK1)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1985–1987 U.S.-Market\u003c\/strong\u003e — 4A-GE naturally aspirated; one-wire unheated upstream sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1988–1989 U.S.-Market\u003c\/strong\u003e — 4A-GE naturally aspirated; four-wire heated upstream sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1988–1989 U.S.-Market Supercharged\u003c\/strong\u003e — 4A-GZE; four-wire heated upstream sensor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eFitment Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe 1988–1989 naturally aspirated and Supercharged sensors are different configurations.\u003c\/strong\u003e Select the option that matches the original 4A-GE or 4A-GZE application.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eThe four-wire sensors are not conversions for the 1985–1987 one-wire electrical circuit.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine swaps, harness conversions and altered exhaust interfaces require separate component matching;\u003c\/strong\u003e original chassis year alone does not establish fitment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e NTK\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition:\u003c\/strong\u003e Upstream \/ pre-catalyst\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensor type:\u003c\/strong\u003e Narrowband zirconia\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensor-body hex:\u003c\/strong\u003e 22 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e1985–1987 | One-Wire Unheated\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHarness length:\u003c\/strong\u003e 500 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWire \/ terminal quantity:\u003c\/strong\u003e 1 \/ 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector:\u003c\/strong\u003e Circular female housing with one male blade terminal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e Preassembled two-fastener flange\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e1988–1989 | Four-Wire Heated\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHarness length:\u003c\/strong\u003e 505 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWire \/ terminal quantity:\u003c\/strong\u003e 4 \/ 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector:\u003c\/strong\u003e Square female housing with four male blade terminals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e M18 × 1.5 threaded sensor with a separate two-hole flange adapter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e1988–1989 | 4A-GZE Supercharged | Four-Wire Heated\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHarness length:\u003c\/strong\u003e 375 mm (14.75 in)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWire \/ terminal quantity:\u003c\/strong\u003e 4 \/ 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector:\u003c\/strong\u003e Square female housing with four male blade terminals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e Flange\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread size:\u003c\/strong\u003e M18 × 1.5\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eAvailable Configurations\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e1985–1987 | One-Wire Unheated\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIncludes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e(1) Oxygen sensor with terminated harness and preassembled mounting flange\u003c\/li\u003e\n\u003cli\u003e(1) Loose flange sealing gasket\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e1988–1989 | Four-Wire Heated\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIncludes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e(1) Oxygen sensor with terminated harness\u003c\/li\u003e\n\u003cli\u003e(1) Threaded flange adapter with bonded copper seal\u003c\/li\u003e\n\u003cli\u003e(1) Anti-seize packet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e1988–1989 | 4A-GZE Supercharged | Four-Wire Heated\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIncludes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e(1) Direct-fit heated oxygen sensor with terminated harness and mounting flange\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NTK","offers":[{"title":"1985–1987 | One-Wire Unheated","offer_id":67622590480693,"sku":null,"price":48.99,"currency_code":"USD","in_stock":true},{"title":"1988–1989 | Four-Wire Heated","offer_id":67628510839093,"sku":null,"price":99.99,"currency_code":"USD","in_stock":true},{"title":"1988–1989 | 4A-GZE Supercharged | Four-Wire Heated","offer_id":67630368194869,"sku":null,"price":79.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0726\/6005\/8421\/files\/NTKOxygenSensorProductLayout_9f809c7a-49be-43bf-9228-ed543e030f14.png?v=1791237112","url":"https:\/\/preserverad.com\/products\/ntk-upstream-oxygen-sensor-1985-1989-aw11-mr2","provider":"Preserve Rad","version":"1.0","type":"link"}