{"product_id":"seal-at540-1972-055405","title":"Mcs Allison AT540\/545 Mt640\/643\/644 Extension Housing 72-on (od: 3.632\")","description":"\u003ch2\u003eExtension Housing Seal for Allison AT540\/AT545 \u0026amp; MT640\/643\/644 Transmissions (1972+)\u003c\/h2\u003e\u003cp\u003eThis extension housing seal is a direct-fit replacement for Allison AT540, AT545, MT640, MT643, and MT644 transmissions from 1972 and up. Manufactured by Alto Products to exacting tolerances with a 3.632\" outer diameter, it delivers a precise fit and dependable sealing performance for your rebuild or repair. Keep your transmission leak-free and running reliably with this quality replacement seal.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePrecision-manufactured by Alto Products for consistent quality and fit\u003c\/li\u003e\n\u003cli\u003e3.632\" outer diameter for exact replacement of the original seal\u003c\/li\u003e\n\u003cli\u003eDurable construction resists heat, pressure, and transmission fluid\u003c\/li\u003e\n\u003cli\u003eDirect-fit design for Allison AT540, AT545, MT640, MT643, and MT644 units\u003c\/li\u003e\n\u003cli\u003eIdeal for transmission rebuilds, repairs, and preventive maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eThis extension housing seal fits Allison AT540, AT545, MT640, MT643, and MT644 transmissions from 1972 and later. It is compatible with a wide range of vehicles equipped with these Allison transmissions. Please verify your transmission model and seal dimensions before ordering.\u003c\/p\u003e\u003ch3\u003eWhy Choose This Part?\u003c\/h3\u003e\u003cp\u003eAlto Products is a trusted name in transmission components, and this extension housing seal is built to meet or exceed OEM specifications. If you are rebuilding or servicing an Allison AT540, AT545, MT640, MT643, or MT644 transmission, this seal provides the reliable, leak-free performance you need. Order today and get your transmission sealed right the first time.\u003c\/p\u003e","brand":"ALTO PRODUCTS","offers":[{"title":"Default Title","offer_id":49484810715395,"sku":"055405","price":21.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0833\/0333\/4147\/files\/055405_01.png?v=1792190337","url":"https:\/\/shop.atkits.com\/products\/seal-at540-1972-055405","provider":"ATK and parts, LLC","version":"1.0","type":"link"}