{"product_id":"tautoy-oxygen-o2-sensor-kit-for-honda-accord-2003-2007-l4-2-4l-upstream-downstream-direct-fit-stainless-steel","title":"TAUTOY Oxygen O2 Sensor Kit for Honda Accord 2003-2007 L4 2.4L — Upstream \u0026 Downstream Direct-Fit, Stainless Steel","description":"\u003cp\u003e\u003cstrong\u003eTAUTOY Upstream and Downstream Oxygen O2 Sensor kit is a two-piece replacement set engineered to restore precise air-fuel monitoring for Honda Accord 2.4L engines from 2003–2007.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese two sensors — one upstream (pre-catalyst) and one downstream (post-catalyst) — are designed as direct-fit replacements for OEM part numbers including 234-9040 and 234-4797. Constructed with double laser-welded stainless steel housings and advanced sensing elements, the pair measures oxygen partial pressure to help the engine control module maintain balanced combustion and emissions. The kit fits multiple 2003–2007 Accord trims with the L4 2.4L engine and arrives backed by a one-year warranty.\u003c\/p\u003e\n\n\u003ch3\u003eHow will these sensors affect my Accord’s performance?\u003c\/h3\u003e\n\u003cp\u003eUpstream and downstream oxygen sensors work together to provide real-time feedback on exhaust oxygen content so the engine can adjust fuel delivery. Replacing worn sensors returns the system’s ability to keep air-fuel ratio within target ranges, which supports smoother idling and more consistent throttle response. While not a tuning part, fresh sensors enable the ECU to operate as intended.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncludes both upstream (234-9040) and downstream (234-4797) sensors for full system feedback.\u003c\/li\u003e\n  \u003cli\u003eHigh-precision sensing reduces sensor lag and erroneous readings.\u003c\/li\u003e\n  \u003cli\u003eDirect-fit for Accord L4 2.4L models—no modification required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich models and part numbers does this kit replace?\u003c\/h3\u003e\n\u003cp\u003eThis TAUTOY kit is formulated to match OEM fitment for Honda Accord models listed from 2003–2007 with the 2.4L inline-4 engine. It corresponds to multiple manufacturer part numbers so you can cross-reference with your vehicle’s existing sensors. Confirm compatibility by checking both the engine code and the sensor connector style before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits Accord DX, EX, LX, SE, and Special Edition trims where applicable (2003–2007).\u003c\/li\u003e\n  \u003cli\u003eOEM cross-references: 234-4797, 234-9040, 13704, 2344363, 36531RAAA01, and variants.\u003c\/li\u003e\n  \u003cli\u003eDesigned for L4 2.4L engine mount locations upstream and downstream.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and build quality can I expect from these sensors?\u003c\/h3\u003e\n\u003cp\u003eTAUTOY sensors use stainless steel bodies joined with double laser welds to protect internal sensing elements from heat and vibration. The robust assembly helps maintain sensor accuracy over repeated thermal cycles common in exhaust systems. The construction focuses on long-term durability while matching the form, fit, and electrical connection of OEM units.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDouble laser-welded stainless steel housing for corrosion and vibration resistance.\u003c\/li\u003e\n  \u003cli\u003ePrecision sensing element calibrated for oxygen partial pressure measurement.\u003c\/li\u003e\n  \u003cli\u003eOE-style connectors and thread pitch for hassle-free installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and what should I know before replacing them?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward for a mechanically inclined DIYer: locate the upstream and downstream ports on the exhaust, disconnect the electrical connectors, remove the old sensors, and install the replacements using the correct torque. Anti-seize is typically applied to threads (check whether pre-applied), and using a proper oxygen sensor socket prevents damage. If you’re unsure, a professional shop can complete the swap quickly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect-fit design means no splicing or custom wiring needed.\u003c\/li\u003e\n  \u003cli\u003eRecommended tools: sensor socket, ratchet, penetrating oil, torque wrench.\u003c\/li\u003e\n  \u003cli\u003eOne-year warranty from TAUTOY for parts reliability assurance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? This TAUTOY Upstream and Downstream Oxygen O2 Sensor kit is intended for Honda Accord owners and mechanics servicing 2003–2007 models with the 2.4L L4 engine who need a reliable OEM-replacement sensor pair. It’s a practical choice for drivers troubleshooting a check engine code related to oxygen sensors, shops maintaining emission controls, or DIYers restoring proper fuel trim and drivability. Verify your vehicle’s model year, engine, and connector type to ensure fitment before purchase.\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 this kit trigger a check engine light fix?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Replacing faulty oxygen sensors can clear related trouble codes, but persistent CELs may need diagnostics for other issues.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do these sensors come with anti-seize on threads?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Thread coating varies; inspect parts on arrival and apply anti-seize if needed before installation.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"TAUTOY","offers":[{"title":"Default Title","offer_id":55171256222039,"sku":"B0CXDZMC36","price":51.83,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/tautoy-front-packaging-oxygen-sensor-kit_71a7785e-7962-465a-9bde-0bb40c716f04.jpg?v=1790441443","url":"https:\/\/britishgarage.co.uk\/products\/tautoy-oxygen-o2-sensor-kit-for-honda-accord-2003-2007-l4-2-4l-upstream-downstream-direct-fit-stainless-steel","provider":"British Garage","version":"1.0","type":"link"}