{"product_id":"heavy-duty-output-shaft","title":"Heavy Duty Output Shaft","description":"The Sonnax heavy duty output shaft (74678S-HD) addresses common output shaft failures experienced in GM 4L60-E, 4L65-E, and 4L70-E transmissions, particularly as power levels are increased.\n\nConstructed from high-strength 300M steel, the shaft boasts rolled splines for increased durability. It undergoes specialized heat treatment and processing to ensure maximum toughness and longevity under stress. This combination of materials and advanced manufacturing techniques makes it a robust upgrade for performance-oriented GM transmissions.","brand":"Sonnax","offers":[{"title":"Default Title","offer_id":52663721656632,"sku":"74678S-HD","price":790.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687679846.png?v=1784329149","url":"https:\/\/store.motormia.co\/products\/heavy-duty-output-shaft","provider":"MOTORMIA","version":"1.0","type":"link"}