{"product_id":"amrxuts-oxygen-sensor-set-for-subaru-saab-2-piece-upstream-downstream-2-5l-h4-oe-fit-tested","title":"Amrxuts Oxygen Sensor Set for Subaru \u0026 Saab — 2-piece Upstream\/Downstream 2.5L H4, OE-fit Tested","description":"\u003cp\u003e\u003cstrong\u003eAmrxuts 2-piece upstream and downstream oxygen sensor set replaces worn sensors on compatible Subaru and Saab 2.5L H4 models to help restore accurate air-fuel sensing and normal emissions-system operation.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis aftermarket pair includes both the upstream (front) and downstream (rear) O2 sensors built to match OE fitment for select Subaru Impreza, Legacy, Forester, Outback and Saab 9-2X vehicles from the 2006–2011 model years. Each sensor is new, bench-tested before shipping, and supplied with pre-attached wiring harnesses sized to the original routing so installation is straightforward for experienced DIYers or technicians.\u003c\/p\u003e\n\n\u003ch3\u003eWill these sensors fit my Subaru or Saab?\u003c\/h3\u003e\n\u003cp\u003eThey are designed for the 2.5L H4 engine variants listed by model and year. Confirm vehicle compatibility using the part numbers, engine code, and model year before purchase to avoid returns.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible models: Subaru Impreza (2006–2011), Legacy (2006–2009), Forester (2006–2010), Outback (2006–2009)\u003c\/li\u003e\n  \u003cli\u003eAlso fits Saab 9-2X with 2.5L H4 (model years noted)\u003c\/li\u003e\n  \u003cli\u003eCross-reference part numbers: 234-9123, 22641-AA36A (upstream); 234-4445, 22690-AA810 (downstream)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do these sensors arrive and what are the key specifications?\u003c\/h3\u003e\n\u003cp\u003eThe pair ships new from Amrxuts and each sensor has factory-tested electrical continuity. Physical and electrical specs are matched to OE items for plug-and-play replacement in original harness locations.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncludes: 2 sensors — upstream (234-9123) and downstream (234-4445)\u003c\/li\u003e\n  \u003cli\u003eWire harness lengths: upstream 19.69 inches; downstream 20.87 inches\u003c\/li\u003e\n  \u003cli\u003eWire quantity: 4 wires per sensor to match vehicle connectors\u003c\/li\u003e\n  \u003cli\u003eCondition: aftermarket, 100% tested before shipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I expect during installation and early operation?\u003c\/h3\u003e\n\u003cp\u003eInstallation is intended to be a direct-fit swap using existing mounting points and connectors. After installation, engine control units typically relearn sensor behavior; a short drive cycle may be needed for normal closed-loop operation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect-fit design reduces modification and connector splicing\u003c\/li\u003e\n  \u003cli\u003eUse anti-seize on threads if not pre-applied and torque to factory spec\u003c\/li\u003e\n  \u003cli\u003eClear any stored error codes after replacement and perform a drive cycle\u003c\/li\u003e\n  \u003cli\u003eIf check-engine light persists, verify wiring and connector seating\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: this Amrxuts sensor kit is aimed at owners and mechanics replacing failing oxygen sensors on the listed Subaru and Saab 2.5L H4 vehicles who need an affordable, tested aftermarket replacement. It’s suitable for workshop technicians and competent DIYers comfortable with undercar or engine-bay work, OBD-II code clearing, and basic torque procedures. If you need exact OEM part matching, cross-check the part numbers provided before buying.\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: Do these sensors include both upstream and downstream units?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The kit contains two sensors: the upstream (234-9123) and downstream (234-4445) units.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What are the harness lengths and wire counts?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Upstream harness length is 19.69 inches, downstream is 20.87 inches; each sensor has four wires.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Amrxuts","offers":[{"title":"Default Title","offer_id":55168393806167,"sku":"B07R1SGD26","price":54.21,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/amrxuts-front-sensor-packaging.jpg?v=1790402523","url":"https:\/\/britishgarage.co.uk\/products\/amrxuts-oxygen-sensor-set-for-subaru-saab-2-piece-upstream-downstream-2-5l-h4-oe-fit-tested","provider":"British Garage","version":"1.0","type":"link"}