{"product_id":"tc-remanufacturing-hd3689-8-2-automatic-transmission-torque-converter","title":"TC Remanufacturing HD3689-8-2 Automatic Transmission Torque Converter","description":"\u003ch2\u003eOverview of TC Remanufacturing HD3689-8-2 Torque Converter\u003c\/h2\u003e\u003cp\u003eThe TC Remanufacturing HD3689-8-2 is a precision-engineered automatic transmission torque converter designed specifically for Ford F-250 Super Duty and F-350 Super Duty models. This multi-disc lock-up converter offers reliable performance and is built to meet the demanding requirements of heavy-duty truck transmissions.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBolt Circle Diameter: 11.375 inches\u003c\/li\u003e\n\u003cli\u003eConverter Diameter: 12.750 inches\u003c\/li\u003e\n\u003cli\u003eConverter Type: Multi disc lock up\u003c\/li\u003e\n\u003cli\u003eHub Type: Milled flats\u003c\/li\u003e\n\u003cli\u003eMounting Type: Studs\u003c\/li\u003e\n\u003cli\u003ePilot Diameter: 1.375 inches\u003c\/li\u003e\n\u003cli\u003eSpline Count: 31\u003c\/li\u003e\n\u003cli\u003eStall Speed Range: 1300-1500 RPM\u003c\/li\u003e\n\u003cli\u003eConverter Codes: 6mm, ww9\u003c\/li\u003e\n\u003cli\u003eRing Gear: Not included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Details and Specifications\u003c\/h2\u003e\u003cp\u003eThe HD3689-8-2 torque converter features a 12.750-inch diameter and an 11.375-inch bolt circle, ensuring a precise fit for compatible Ford Super Duty transmissions. Its multi-disc lock-up design improves transmission efficiency by reducing slippage during lock-up, which enhances fuel economy and drivability. The milled flats hub type and stud mounting provide secure installation and durability under heavy load conditions. With a pilot diameter of 1.375 inches and 31 splines, this torque converter is engineered to match the exact specifications required by Ford F-250 and F-350 Super Duty trucks. The stall speed range of 1300-1500 RPM is optimized for these vehicles, balancing torque multiplication and smooth engagement.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThis automatic transmission torque converter is compatible with the following Ford models:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFord F-250 Super Duty\u003c\/li\u003e\n\u003cli\u003eFord F-350 Super Duty\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIt is designed to replace worn or damaged torque converters in these trucks, restoring proper transmission function and performance.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by This Torque Converter\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eTransmission slipping or delayed engagement\u003c\/li\u003e\n\u003cli\u003eOverheating due to inefficient torque transfer\u003c\/li\u003e\n\u003cli\u003eReduced fuel efficiency from lock-up failure\u003c\/li\u003e\n\u003cli\u003eShudder or vibration during acceleration\u003c\/li\u003e\n\u003cli\u003eExcessive stall speed causing poor drivability\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the HD3689-8-2 torque converter, ensure the following:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eVerify compatibility with your Ford F-250 or F-350 Super Duty transmission model.\u003c\/li\u003e\n\u003cli\u003eInspect the transmission pump and seals for wear before installation.\u003c\/li\u003e\n\u003cli\u003eProperly align the milled flats hub and secure the converter using the stud mounting system.\u003c\/li\u003e\n\u003cli\u003eCheck the spline engagement to avoid damage during installation.\u003c\/li\u003e\n\u003cli\u003eFill the transmission with the manufacturer-recommended fluid after installation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eTC Remanufacturing produces this torque converter to meet strict quality standards, ensuring reliable performance and durability. The HD3689-8-2 is remanufactured with precision to restore original equipment specifications. Please refer to TC Remanufacturing's warranty policy for coverage details, which typically includes protection against defects in materials and workmanship.\u003c\/p\u003e","brand":"TC Remanufacturing","offers":[{"title":"Default Title","offer_id":43389836656821,"sku":"HKFT-HD3689-8-2","price":578.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DU_HD368982_Fro.jpg?v=1774728016","url":"https:\/\/www.partcatalog.com\/products\/tc-remanufacturing-hd3689-8-2-automatic-transmission-torque-converter","provider":"PartCatalog","version":"1.0","type":"link"}