{"product_id":"honda-fk8-civic-type-r-oxygen-o2-sensor-36531-rpy-g02","title":"Honda FK8 Civic Type R Oxygen (O2) Sensor 36531-RPY-G02","description":"\u003cul\u003e\n\u003cli\u003eCompatible with FK8 Civic Type R \u003c\/li\u003e\n\u003cli\u003eGenuine Honda Product \u003c\/li\u003e\n\u003cli\u003eDirect Factory Replacement Part \u003c\/li\u003e\n\u003cli\u003eUpper\/Upstream Oxygen Sensor \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- split --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli\u003e\u003ca class=\"active\" href=\"#Description\"\u003eDescription\u003c\/a\u003e\u003c\/li\u003e\n \u003cli\u003e\u003ca href=\"#VehicleFitment\"\u003eVehicle Fitment\u003c\/a\u003e\u003c\/li\u003e   \u003cli\u003e\u003ca href=\"#Included\"\u003eIncluded\u003c\/a\u003e\u003c\/li\u003e \u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\n\n\u003cli class=\"active\" id=\"Description\"\u003e\n\u003ch3\u003eGenuine Honda Upper Oxygen Sensor (36531-RPY-G02) - 2017-2021 Civic Type R\u003c\/h3\u003e\n\n\u003cp\u003eThe upper O2 sensor is what tells your ECU whether the engine is running rich or lean, and everything about how the car meters fuel depends on that signal being accurate. When it goes lazy, you don't get a dramatic failure, you get worse fuel economy, a check engine light, and an ECU working from bad information. This is the genuine Honda replacement for the FK8.\u003c\/p\u003e\n\n\u003ch4\u003eUpper, Not Lower\u003c\/h4\u003e\n\n\u003cp\u003eQuick check before ordering, since the FK8 has both.\u003c\/p\u003e\n\n\u003cp\u003eThis is the \u003cstrong\u003eupper sensor\u003c\/strong\u003e, also called the upstream or primary sensor. It sits ahead of the catalytic converter and it's the one your ECU uses for fuel control.\u003c\/p\u003e\n\n\u003cp\u003eThe lower sensor sits after the cat and primarily monitors catalyst efficiency. Different part, different job. If your code points downstream, this isn't the sensor you need.\u003c\/p\u003e\n\n\u003ch4\u003eWhat A Failing Sensor Looks Like\u003c\/h4\u003e\n\n\u003cp\u003eWorth knowing, because these degrade rather than simply stopping.\u003c\/p\u003e\n\n\u003cp\u003eThe usual signs are a \u003cstrong\u003echeck engine light\u003c\/strong\u003e with an O2 sensor or fuel trim code, \u003cstrong\u003eworse fuel economy\u003c\/strong\u003e than the car normally returns, and sometimes a \u003cstrong\u003erough idle\u003c\/strong\u003e or hesitation as the ECU corrects against a signal it can't trust.\u003c\/p\u003e\n\n\u003cp\u003eWhat makes it frustrating is that a slow sensor still reads. It just reads late, which means your fuel trims are chasing a signal that's behind what's actually happening in the exhaust. The car runs, it just doesn't run right, and the symptoms are vague enough to get blamed on other things.\u003c\/p\u003e\n\n\u003ch4\u003eIt Matters More On A Tuned Car\u003c\/h4\u003e\n\n\u003cp\u003eWorth calling out, since most FK8s are running something.\u003c\/p\u003e\n\n\u003cp\u003eIf your car is tuned, your tuner set fueling based on what the sensor was reporting at the time. A sensor that's drifted since then means the ECU is correcting against bad data, which undermines the tune you paid for.\u003c\/p\u003e\n\n\u003cp\u003eOn a boosted engine that's not just a fuel economy question. Accurate air-fuel readings are part of what keeps the engine safe under load, and a lazy sensor is a poor thing to rely on when you're leaning on the car.\u003c\/p\u003e\n\n\u003cp\u003eIf you're planning dyno time, replacing a questionable sensor beforehand is worth doing. Your tuner will be working from clean data rather than trying to account for a sensor they can't verify.\u003c\/p\u003e\n\n\u003ch4\u003eUse The Genuine Sensor\u003c\/h4\u003e\n\n\u003cp\u003eO2 sensors are a spot where aftermarket quality varies enormously, and the failure mode isn't obvious.\u003c\/p\u003e\n\n\u003cp\u003eA cheap sensor may read, but reading slowly or drifting over time produces exactly the vague running problems you were trying to fix. You end up chasing a fault you introduced.\u003c\/p\u003e\n\n\u003cp\u003eThis is the exact part Honda spec'd for the FK8, with the correct response characteristics the ECU expects. On a component this central to how the engine runs, it's not worth economizing.\u003c\/p\u003e\n\n\u003ch4\u003eFitment\u003c\/h4\u003e\n\n\u003cp\u003e2017-2021 Honda Civic Type R (FK8)\u003cbr\u003e2021 Honda Civic Type R Limited Edition\u003c\/p\u003e\n\n\u003cp\u003ePart number 36531-RPY-G02. Upper sensor.\u003c\/p\u003e\n\n\u003ch4\u003eWho Should Grab One\u003c\/h4\u003e\n\n\u003cp\u003eThis is for the Type R owner chasing a check engine light or fuel economy that's fallen off, and for anyone heading to a dyno who'd rather start with a sensor they trust. It's a straightforward part doing an important job, and the genuine one is what your ECU was calibrated around. Swap it, clear your codes, and get back to accurate fueling.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFits:\u003c\/strong\u003e 2017-2021 Honda Civic Type R and 2021 Civic Type R Limited Edition. \u003cstrong\u003ePart number:\u003c\/strong\u003e 36531-RPY-G02. \u003cstrong\u003eType:\u003c\/strong\u003e genuine Honda upper (upstream) oxygen sensor.\u003c\/p\u003e\n\u003c\/li\u003e\n\n \n\u003cli id=\"VehicleFitment\"\u003e\n \u003cp\u003e2017-2021 Honda Civic Type R\u003cbr\u003e2021 Honda Civic Type R Limited Edition\u003c\/p\u003e \n\u003c\/li\u003e\n\n\n\n\n\n\n \n\u003cli id=\"Included\"\u003e\n\u003cp\u003e(1) Oxygen (O2) Sensor\u003c\/p\u003e\n\u003c\/li\u003e\n\n\n\n\n\n\n\n\n\n\n\n\n\u003c\/ul\u003e\n","brand":"Honda","offers":[{"title":"Default Title","offer_id":47512315789346,"sku":"OHA-36531-RPY-G02","price":295.31,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2218\/5701\/files\/OHA-36531-RPY-G02_y7mk.jpg?v=1789160668","url":"https:\/\/www.hybrid-racing.com\/products\/honda-fk8-civic-type-r-oxygen-o2-sensor-36531-rpy-g02","provider":"Hybrid Racing","version":"1.0","type":"link"}