{"product_id":"transmission-main-case","title":"Transmission Main Case","description":"The Muncie 3925661 is a new, OEM-style four-speed transmission main case specifically designed as a replacement for damaged or broken M-20, M-21, and M-22 transmissions in 1970-1974 Chevrolet Camaros.\n\nThis case features the correct part number 3925661, U.S. Patent number 3088336, and General Motors Corp castings, ensuring an authentic restoration part. Both the fill and drain plugs are drilled and tapped for convenience. The lower cluster gear countershaft pin hole measures one inch in diameter. This is a licensed GM restoration part.\n\nIt is important to note that these main cases are finished by hand and may exhibit minor imperfections such as grind marks, burr marks, and slight variations in hole openings. These characteristics are normal for a hand-finished restoration part and do not affect its functionality once assembled, installed, and dressed.\n\nThis main case is exclusively correct for 1970-1974 Muncie 4-speed transmissions, including M-20, M-21, and M-22 models. Please ensure this is the correct main case for your needs, as these parts are non-refundable for any reason.","brand":"Muncie","offers":[{"title":"Default Title","offer_id":52663075799352,"sku":"3925661","price":225.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687514158.jpg?v=1784323525","url":"https:\/\/store.motormia.co\/products\/transmission-main-case","provider":"MOTORMIA","version":"1.0","type":"link"}