{"product_id":"k-3985","title":"Eaton Fuller K-3985 Gen 1 ECA Transmission Harness Kit — LAS \/ VAS","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eGenuine Eaton Fuller \u003cstrong\u003eK-3985\u003c\/strong\u003e transmission shift-control harness kit for supported automated transmissions using the Generation 1 electronic clutch actuator (ECA).\u003c\/p\u003e\u003ch3\u003eTechnical Identification\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Eaton Fuller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number \/ SKU:\u003c\/strong\u003e K-3985\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e Automated-transmission wiring harness kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary harness reference:\u003c\/strong\u003e 4307040\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eECA generation:\u003c\/strong\u003e Generation 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplicable Gen 1 ECA:\u003c\/strong\u003e 4306651\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOfficial configuration reference:\u003c\/strong\u003e LAS \/ VAS transmission configurations in Eaton warranty and model-specific literature\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGen 2 replacement family:\u003c\/strong\u003e K-4255 with Gen 2 ECA 125872, subject to exact transmission configuration\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplication and Service Notes\u003c\/h3\u003e\u003cp\u003eConfirm the complete transmission model and serial number, ECU variant, LAS or VAS configuration, ECA generation, current ECA number, harness connectors, branch lengths, sensor connections, and original harness number before ordering. Do not use K-3985 on a Gen 2 ECA system or substitute another K-3983\/K-3984 harness without verifying the ECU and transmission configuration.\u003c\/p\u003e\u003cp\u003eFollow Eaton diagnostic procedures before replacing the harness. Inspect fault codes, connector locks, terminal tension, chafing, contamination, continuity, resistance, grounds, power supply, and software level. Programming or ServiceRanger verification may be required after repair.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePlease confirm K-3985, 4307040, Gen 1 ECA 4306651, LAS\/VAS configuration, transmission serial number, and connector arrangement before ordering.\u003c\/strong\u003e\u003c\/p\u003e\u003ch3\u003eParts Verification and Ordering Notice\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003ePlease confirm the existing part number, transmission model and serial number, ECU and ECA generation, connectors, electrical specifications, harness routing, included components, and application before ordering. Cross-reference numbers, parts catalogs, service manuals, repair manuals, PDF references, and application guides are reference material only and may contain errors, omissions, superseded information, or model-specific differences.\u003c\/strong\u003e\u003c\/p\u003e\u003ch3\u003eTechnical References and OEM Documentation\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.inforanger.roadranger.com\/Print.aspx?groupID=2018\u0026amp;modelID=634\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eEaton Inforanger — K-3985 Gen 1 ECA Harness Application\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.eaton.com\/us\/en-us\/support\/warranty-returns\/eaton-commercial-vehicle-warranty\/warranty-information\/guidelines\/rwrg0063.html\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eEaton RWRG0063 — Transmission Harness Selection by Configuration\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.eaton.com\/us\/en-us\/support\/download-center.html\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eEaton Download Center — Automated Transmission Diagnostic and Wiring Manuals\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Eaton","offers":[{"title":"Default Title","offer_id":46323948060844,"sku":"K-3985","price":252.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/5228\/4076\/files\/all-truck-gears-image-coming-soon_c4d62b49-0a6c-4d68-aa32-208fe0bc0c68.png?v=1785880792","url":"https:\/\/atgbakersfield.com\/products\/k-3985","provider":"ATG Bakersfield","version":"1.0","type":"link"}