{"product_id":"standard-ignition-ks525-ignition-knock-detonation-sensor","title":"Standard Ignition KS525 Ignition Knock (Detonation) Sensor","description":"\u003ch2\u003eIgnition Knock Sensor for Mercedes-Benz Applications\u003c\/h2\u003e\u003cp\u003eStandard Ignition KS525 is an ignition knock sensor built for direct-fit service on select Mercedes-Benz models. It uses a 2-terminal, female plug-in connector with an oval shape and bolt-mount attachment for a straightforward OE-style replacement.\u003c\/p\u003e\u003cp\u003eCompatible with Mercedes-Benz AMG GT 43, AMG GT 53, CLS450, CLS53 AMG, E450, E53 AMG, GLE450, GLE53 AMG, GLS450, S500, and S580e applications, this Standard Ignition KS525 knock sensor supports accurate engine knock detection across a wide range of late-model vehicles.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eIgnition knock (detonation) sensor for emission control and engine management systems\u003c\/li\u003e\n\u003cli\u003eStandard Ignition KS525 replacement part number\u003c\/li\u003e\n\u003cli\u003e2-terminal blade design with 1 female connector\u003c\/li\u003e\n\u003cli\u003eOval plug-in connector for OE-style electrical connection\u003c\/li\u003e\n\u003cli\u003eBolt-mount attachment method for secure installation\u003c\/li\u003e\n\u003cli\u003ePlastic and metal construction for underhood durability\u003c\/li\u003e\n\u003cli\u003eDirect replacement for cross-reference applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eThe KS525 is designed as a bolt-mounted knock sensor that monitors engine vibration signals and sends data to the vehicle’s control system. On Mercedes-Benz AMG GT 53, E53 AMG, and GLS450 applications, a properly functioning knock sensor helps the engine management system respond to detonation-related conditions and maintain correct timing strategy. This part cross-references Mercedes-Benz OE 0009057304 for the same application.\u003c\/p\u003e\u003cp\u003eStandard Ignition KS525 is a practical replacement choice when servicing Mercedes-Benz AMG GT 43, CLS53 AMG, E450, GLE53 AMG, S500, and S580e models that require a 2-terminal, oval plug-in sensor with a bolt-mount design.\u003c\/p\u003e\u003ch2\u003eWhat This Sensor Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eKnock sensor fault codes\u003c\/li\u003e\n\u003cli\u003eEngine pinging or detonation-related drivability concerns\u003c\/li\u003e\n\u003cli\u003eReduced engine performance caused by inaccurate knock feedback\u003c\/li\u003e\n\u003cli\u003eCheck engine light conditions tied to the knock sensor circuit\u003c\/li\u003e\n\u003cli\u003eIntermittent sensor signal issues from connector or mounting wear\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify connector style, terminal count, and mounting location before installation. The KS525 uses a female connector, male blade terminals, and bolt-mount attachment, so the replacement should match the original sensor configuration. Inspect the harness connector and mounting surface for corrosion, damage, or debris before securing the new sensor.\u003c\/p\u003e\u003cp\u003eFor best results, clear diagnostic trouble codes after installation and confirm proper operation with a scan tool if the vehicle previously stored knock sensor-related faults.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eStandard Ignition supplies OE-style replacement electrical components for service applications, and KS525 is built to match the listed fitment and connector specifications for Mercedes-Benz vehicles.\u003c\/p\u003e","brand":"Standard Ignition","offers":[{"title":"Default Title","offer_id":52820727234741,"sku":"FBHK-KS525","price":28.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/SI_KS525_Fro.jpg?v=1784524539","url":"https:\/\/www.partcatalog.com\/products\/standard-ignition-ks525-ignition-knock-detonation-sensor","provider":"PartCatalog","version":"1.0","type":"link"}