{"product_id":"belkebir-oxygen-sensor-kit-for-2007-2011-honda-civic-1-8l-l4-upstream-downstream-pair","title":"BELKEBIR Oxygen Sensor Kit for 2007-2011 Honda Civic 1.8L L4 — Upstream \u0026 Downstream Pair","description":"\u003cp\u003e\u003cstrong\u003eA matched pair of upstream and downstream BELKEBIR oxygen sensors engineered to replace factory O2 sensors on 2007–2011 Honda Civic 1.8L L4 models for reliable emissions monitoring and restored engine performance.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis BELKEBIR two-piece oxygen sensor kit includes both the upstream (pre-cat) and downstream (post-cat) sensors designed as direct replacements for OE numbers such as 234-9124, 234-4350, 36531-RNA-J01 and 36532-RNA-A01. Each sensor is manufactured with durable materials and calibrated to provide accurate air\/fuel feedback to the engine computer. Whether you’re troubleshooting a check engine light, fixing a drivability issue, or simply servicing an older Civic, these sensors are sized and wired to simplify installation and bring emissions readings back to specification.\u003c\/p\u003e\n\n\u003ch3\u003eHow will these sensors affect my Civic’s drivability?\u003c\/h3\u003e\n\u003cp\u003eReplacing failing oxygen sensors often restores smoother idle, crisper throttle response, and steadier acceleration by returning correct oxygen readings to the ECU. The upstream sensor helps the engine maintain the correct air\/fuel ratio, while the downstream sensor verifies catalytic converter efficiency.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUpstream sensor (pre-cat) provides real-time air\/fuel data to the ECU.\u003c\/li\u003e\n  \u003cli\u003eDownstream sensor (post-cat) monitors catalytic converter performance.\u003c\/li\u003e\n  \u003cli\u003eAccurate readings reduce hesitation, surging, and rough idling.\u003c\/li\u003e\n  \u003cli\u003eDirect-fit connectors and thread sizes minimize installation errors.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre these BELKEBIR sensors compatible with my 2007–2011 Honda Civic?\u003c\/h3\u003e\n\u003cp\u003eThese sensors are manufactured to match the fit and electrical connections for Civic DX, EX, EX-L, LX and LX-S 1.8L L4 variants produced between 2007 and 2011. Cross-referenced OE part numbers are provided so you can confirm compatibility before purchase.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits 2007–2011 Honda Civic 1.8L L4 models (DX, EX, EX-L, LX, LX-S).\u003c\/li\u003e\n  \u003cli\u003eReplaces OE numbers 234-9124 (upstream) and 234-4350 (downstream).\u003c\/li\u003e\n  \u003cli\u003eIncluded part numbers like 36531-RNA-J01 and 36532-RNA-A01 for verification.\u003c\/li\u003e\n  \u003cli\u003eCheck your vehicle’s year, engine code, and existing sensor connector before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and performance should I expect from these replacements?\u003c\/h3\u003e\n\u003cp\u003eBELKEBIR sensors are constructed with durable ceramic sensing elements and platinum-coated junctions to resist high temperatures and prolonged exhaust exposure. The result is a robust sensor that delivers repeatable voltage signals for the engine control unit and sustained service life under normal driving conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePlatinum and ceramic internal construction for high-temperature durability.\u003c\/li\u003e\n  \u003cli\u003eStable sensor output to support accurate engine tuning and emissions control.\u003c\/li\u003e\n  \u003cli\u003eCorrosion-resistant housing and gasket to protect the sensor thread area.\u003c\/li\u003e\n  \u003cli\u003eDesigned to meet typical OE performance and fitment standards.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow difficult is the installation process for these O2 sensors?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward for anyone familiar with basic automotive maintenance and common hand tools. The sensors use standard threaded fittings and vehicle-specific connectors for a direct swap; some jobs may require an oxygen sensor socket or penetrating lubricant to remove the old unit.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect-fit electrical plug matches factory harness—no splicing required.\u003c\/li\u003e\n  \u003cli\u003eThreaded installation fits existing bung on the exhaust system.\u003c\/li\u003e\n  \u003cli\u003eTypical tools: socket set, oxygen sensor socket, penetrating oil, jack stands.\u003c\/li\u003e\n  \u003cli\u003eAllow warm-down time and follow torque specs to avoid damage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This BELKEBIR two-sensor kit is intended for DIY mechanics, independent repair shops, and Civic owners seeking an OE-style replacement for failing or aged oxygen sensors on 2007–2011 Honda Civics with the 1.8L L4 engine. If you want to resolve emissions-related fault codes, improve fuel feedback to the engine, or restore smoother running without expensive dealer pricing, this matched upstream and downstream set is a practical, cost-effective choice. Always confirm your vehicle’s model year and existing part numbers before purchase to ensure proper fitment.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will these sensors fit my 2009 Honda Civic LX 1.8L?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—this BELKEBIR upstream and downstream pair fits 2007–2011 Civic LX 1.8L models. Verify your OEM part numbers match before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need special tools to install the O2 sensors?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Basic tools plus an oxygen sensor socket are recommended; penetrating oil helps remove seized old sensors.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"BELKEBIR","offers":[{"title":"Default Title","offer_id":67587526295737,"sku":"B0F6K1PKVF","price":100.5,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/belkebir-front-packaging-sensors.jpg?v=1790511928","url":"https:\/\/redleafauto.ca\/products\/belkebir-oxygen-sensor-kit-for-2007-2011-honda-civic-1-8l-l4-upstream-downstream-pair","provider":"Redleaf Auto","version":"1.0","type":"link"}