{"product_id":"ntk-25568-oxygen-sensor","title":"NTK 25568 Oxygen Sensor","description":"\u003ch2\u003eDirect-Fit Oxygen Sensor\u003c\/h2\u003e\u003cp\u003eNTK Oxygen Sensor 25568 is a specific-fit, heated oxygen sensor built for Mercedes-Benz applications that require direct replacement coverage. It uses a threaded mounting design and a 4-wire configuration with a 19-inch harness for OE-style serviceability.\u003c\/p\u003e\u003cp\u003eAs part of NTK’s Direct Fit Oxygen Sensor line, this sensor is engineered for streamlined coverage and OE application support. NTK 25568 is a practical choice for Mercedes-Benz E320, S500, and CL500 service where accurate air\/fuel feedback and original-equipment-style fit are required.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHeated oxygen sensor for faster operating response\u003c\/li\u003e\n\u003cli\u003eSpecific-fit design for direct replacement applications\u003c\/li\u003e\n\u003cli\u003e4-wire construction for signal and heater circuit operation\u003c\/li\u003e\n\u003cli\u003e19-inch wiring harness length\u003c\/li\u003e\n\u003cli\u003eThreaded mounting type with 18 mm thread diameter\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eNTK 25568 is a direct-fit oxygen sensor designed around OE-style dimensions and application coverage. The heated sensor design helps maintain consistent exhaust feedback once the system reaches operating temperature, while the threaded mount and specific-fit configuration support straightforward replacement on covered Mercedes-Benz models. This part number is used across multiple upstream and downstream positions depending on the vehicle application, including Mercedes-Benz E320, S420, and S600 listings.\u003c\/p\u003e\u003cp\u003eNTK is known for oxygen sensor manufacturing and OE-level application support, and this part reflects that focus with tested construction and fitment-specific coverage. If you are replacing a worn sensor on a Mercedes-Benz SL500, E55 AMG, or S430, NTK 25568 provides a direct-fit option built to match the original sensor layout. This part cross-references Bosch 13582 and DENSO Auto Parts 234-4174 for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Solve\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCheck engine light caused by oxygen sensor failure\u003c\/li\u003e\n\u003cli\u003eSlow or inaccurate air\/fuel ratio feedback\u003c\/li\u003e\n\u003cli\u003eRough idle or drivability issues related to sensor aging\u003c\/li\u003e\n\u003cli\u003eEmissions test failures tied to faulty exhaust monitoring\u003c\/li\u003e\n\u003cli\u003eReplacement needs for threaded, heated sensor applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the exact position, chassis breakpoints, and notes before ordering, since NTK 25568 is used in multiple Mercedes-Benz upstream and downstream locations. Confirm the connector style, harness length, and thread size against the original sensor before installation. Use the vehicle-specific fitment notes for Mercedes-Benz CL500, S320, and E55 AMG applications to match the correct sensor location.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eNTK states that these oxygen sensors are extensively tested during manufacturing to meet or exceed OE specifications. The brand’s OE manufacturing background and direct-fit product strategy support consistent fit, form, and function across covered applications.\u003c\/p\u003e","brand":"NTK","offers":[{"title":"Default Title","offer_id":53731438297269,"sku":"BFPZ-25568","price":90.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NO_25568_Fro.jpg?v=1794296334","url":"https:\/\/www.partcatalog.com\/products\/ntk-25568-oxygen-sensor","provider":"PartCatalog","version":"1.0","type":"link"}