{"product_id":"sonnax-performance-4l80e-4l85e-th400-main-shaft-300m-heavy-duty-up-to-1000hp-1","title":"Sonnax Performance 4L80E 4L85E TH400 Main Shaft 300M Heavy Duty up to 1000HP","description":"\u003cdiv style=\"text-align: center; font-family: Arial;\"\u003e\n\u003ch1 style=\"font-size: x-large;\"\u003eSonnax Performance Main Shaft 300M 34672-01\u003c\/h1\u003e\n\u003cp style=\"font-size: x-large; font-weight: bold; font-style: italic; color: #000;\"\u003eFits 1991-On 4L80E \u0026amp; 4L85E Models\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-family: Arial; font-size: large;\"\u003e\n\u003cp\u003eMain shaft failure is a common problem in performance and heavy duty GM TH400, 4L80-E and 4L85-E units. Sonnax heavy duty main shaft \u003cstrong\u003e34672-01\u003c\/strong\u003e is manufactured from high strength \u003cstrong\u003e300M\u003c\/strong\u003e with proprietary heat treatment and post heat treat processing for exceptional performance, durability and value.\u003c\/p\u003e\n\u003cp\u003eThis shaft is recommended for applications up to \u003cstrong\u003e1,000HP\u003c\/strong\u003e. For extreme horsepower builds, check out the \u003ca href=\"https:\/\/www.sonnax.com\/parts\/4483-extreme-duty-main-shaft\" target=\"_blank\"\u003eSonnax extreme duty main shaft 34672-05\u003c\/a\u003e — the most durable 1” main shaft available.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAdvanced torsional design with spline and cross hole refinements for added strength\u003c\/li\u003e\n\u003cli\u003eDirect replacement for OE shafts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNote:\u003c\/h3\u003e\n\u003cp\u003eCan be used to replace late 4L80-E solid shafts. However, check clearance between front of main shaft and rear of input shaft. It may be necessary to remove approximately \u003cstrong\u003e.060\"\u003c\/strong\u003e from front of main shaft or rear of input shaft.\u003c\/p\u003e\n\u003ch3\u003eSpecs:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMaterial: 300M\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation recommendation:\u003c\/strong\u003e Experienced technician\u003cbr\u003e\u003cstrong\u003eTransmission removal necessary:\u003c\/strong\u003e YES\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Sonnax","offers":[{"title":"Default Title","offer_id":47130690945246,"sku":"S34672BHD","price":438.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/5464\/5470\/files\/57_9f53ba1b-b3da-4cd8-b76b-692f96ed6794.jpg?v=1753761808","url":"https:\/\/transmissioncenter.net\/products\/sonnax-performance-4l80e-4l85e-th400-main-shaft-300m-heavy-duty-up-to-1000hp-1","provider":"Transmission Center","version":"1.0","type":"link"}