{"product_id":"sonnax-th400-turbo-400-boost-valve-and-sleeve","title":"Sonnax TH400 Turbo 400 Boost Valve and Sleeve","description":"\u003cp\u003ePrecision boost valve and sleeve assembly for the GM TH400 Turbo 400 3L80 heavy-duty automatic transmission. This Sonnax component features precision-machined valve engineered for the TH400's demanding operating environment. Proper servo function is essential for firm band application and reliable shift engagement under high-torque conditions.\u003c\/p\u003e\u003cp\u003eDirect replacement for all 1964-1990 TH400 applications in Chevrolet, GMC, Pontiac, Buick, and Oldsmobile vehicles. Whether rebuilding a daily driver or a drag car, this servo component ensures consistent performance every time.\u003c\/p\u003e","brand":"Sonnax","offers":[{"title":"Default Title","offer_id":50803777437943,"sku":null,"price":88.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6591\/1287\/files\/ph-piston_daeeab3a-5bca-4482-ac19-7e500302b29c.jpg?v=1780070983","url":"https:\/\/coretransmissionparts.com\/products\/sonnax-th400-turbo-400-boost-valve-and-sleeve","provider":"CoreTransmissionParts.com","version":"1.0","type":"link"}