{"product_id":"aw11-denso-oe-upstream-oxygen-sensor-4a-ge-4a-gze-1985-89-mr2","title":"AW11 DENSO OE Upstream Oxygen Sensor | 4A-GE \/ 4A-GZE (1985-89 MR2)","description":"\u003ch2\u003eDENSO OE 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\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eDENSO direct-fit upstream oxygen sensor\u003c\/strong\u003e restores the factory narrowband exhaust-feedback signal used by the AW11 engine-management system. DENSO is a Toyota OE supplier, making these application-specific sensors a strong factory-style replacement choice for original 4A-GE and 4A-GZE configurations.\u003c\/p\u003e\n\u003cp\u003eThe AW11 changed oxygen-sensor design during its production run. Early 1985–1987 4A-GE cars use a one-wire unheated sensor, while 1988–1989 cars use heated four-wire sensors. Naturally aspirated 4A-GE and Supercharged 4A-GZE applications use different later sensors and should be selected by engine.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect-fit DENSO construction\u003c\/strong\u003e with application-specific wiring and connector configuration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNarrowband zirconia sensing\u003c\/strong\u003e for the factory upstream fuel-feedback circuit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-wire unheated configuration\u003c\/strong\u003e for 1985–1987 4A-GE applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour-wire heated configurations\u003c\/strong\u003e for 1988–1989 4A-GE and 4A-GZE applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine-specific late-model selection\u003c\/strong\u003e keeps naturally aspirated and Supercharged applications clearly separated\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) — U.S.-Market\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1985–1987:\u003c\/strong\u003e 4A-GE naturally aspirated — one-wire unheated upstream sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1988–1989:\u003c\/strong\u003e 4A-GE naturally aspirated — four-wire heated upstream sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1988–1989:\u003c\/strong\u003e 4A-GZE Supercharged — 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\u003e1985–1987 and 1988–1989 sensor configurations are not interchangeable.\u003c\/strong\u003e Match the sensor to the factory wiring and model-year configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1988–1989 naturally aspirated and Supercharged applications use different sensors.\u003c\/strong\u003e Match the later sensor to the installed engine.\u003c\/li\u003e\n\u003cli\u003eFor engine swaps, harness conversions, or modified exhaust systems, match the sensor to the installed engine-management wiring and exhaust interface rather than chassis year alone.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e DENSO\u003cbr\u003e\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Upstream Oxygen Sensor\u003cbr\u003e\u003cstrong\u003ePosition:\u003c\/strong\u003e Upstream \/ Pre-Catalyst\u003cbr\u003e\u003cstrong\u003eSensor Type:\u003c\/strong\u003e Narrowband Zirconia\u003cbr\u003e\u003cstrong\u003e1985–1987 4A-GE:\u003c\/strong\u003e One wire, unheated; approximately 19.69 in. harness\u003cbr\u003e\u003cstrong\u003e1988–1989 4A-GE:\u003c\/strong\u003e Four wires, heated; approximately 19.80 in. harness\u003cbr\u003e\u003cstrong\u003e1988–1989 4A-GZE:\u003c\/strong\u003e Four wires, heated; approximately 14.80 in. harness\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhich Oxygen Sensor Should You Buy?\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDENSO — Best for a Trusted, Factory-Style Replacement\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eChoose DENSO if the correct sensor for your MR2 is available and you want a dependable direct-fit replacement from a long-standing Toyota original-equipment supplier. Its oxygen sensors are engineered for vehicle-specific fit and factory-style function.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePrefer NTK?\u003c\/strong\u003e The \u003cstrong\u003e\u003ca href=\"\/products\/ntk-upstream-oxygen-sensor-1985-1989-aw11-mr2\"\u003eNTK Upstream Oxygen Sensor for Toyota MR2 AW11\u003c\/a\u003e\u003c\/strong\u003e is another credible OE-quality option from an established original-equipment sensor manufacturer. Choose its corresponding direct-fit sensor if DENSO is unavailable or you prefer NTK.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOur Recommendation:\u003c\/strong\u003e Match your MR2's model year, engine, original wiring, and sensor configuration first. Then choose the correctly matched \u003cstrong\u003eDENSO or NTK\u003c\/strong\u003e sensor based on availability, price, and brand preference. Neither brand has a demonstrated reliability advantage across these AW11 applications.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eAvailable Configurations\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e1985–1987 | 4A-GE | One-Wire Unheated\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e(1) One-wire unheated upstream oxygen sensor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e1988–1989 | 4A-GE | Four-Wire Heated\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e(1) Four-wire heated upstream oxygen sensor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e1988–1989 | 4A-GZE | Four-Wire Heated\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e(1) Four-wire heated upstream oxygen sensor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAll configurations include (1) new oxygen-sensor flange gasket.\u003c\/strong\u003e\u003c\/p\u003e","brand":"DENSO","offers":[{"title":"1985–1987 | 4A-GE | One-Wire Unheated","offer_id":67630437728565,"sku":"1413","price":64.99,"currency_code":"USD","in_stock":true},{"title":"1988–1989 | 4A-GE | Four-Wire Heated","offer_id":67630437761333,"sku":"1414","price":64.99,"currency_code":"USD","in_stock":true},{"title":"1988–1989 | 4A-GZE | Four-Wire Heated","offer_id":67630437794101,"sku":"1415","price":74.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0726\/6005\/8421\/files\/1logos_1_-Recovered_b451adf0-289a-46bb-97c4-0f4bae74784e.png?v=1791335845","url":"https:\/\/preserverad.com\/products\/aw11-denso-oe-upstream-oxygen-sensor-4a-ge-4a-gze-1985-89-mr2","provider":"Preserve Rad","version":"1.0","type":"link"}