{"product_id":"6l80-6l90-pump-pressure-boost-valve-kit-sonnax-104520-12k","title":"6L80 6L90 Pump Pressure Boost Valve Kit | Sonnax 104520-12K","description":"\u003cdiv style=\"text-align: center;\"\u003e\n\u003ch3 class=\"subhead\" style=\"text-align: left;\"\u003e6L45, 6L50, 6L80, 6L90 Transmission High Performance\u003cbr\u003e\n\u003c\/h3\u003e\n\u003ch1 class=\"light\" style=\"text-align: left;\"\u003e\u003cb\u003eBoost Valve Kit\u003c\/b\u003e\u003c\/h1\u003e\n\u003ch3 class=\"light\" style=\"text-align: left;\"\u003e\u003csmall class=\"omega\"\u003ePart No. \u003cb id=\"analytics_pn\" data-part-name=\"104520-12K\"\u003e104520-12K\u003c\/b\u003e\u003c\/small\u003e\u003c\/h3\u003e\n\u003cp class=\"light\" style=\"text-align: left;\"\u003e\u003cspan style=\"font-size: large;\"\u003eVehicles with listed GM transmissions may exhibit insufficient line rise in drive ranges, soft shifts and\/or burnt clutches. These problems may be caused by continuous oscillation of the boost valve within the boost sleeve, creating excessive wear and a path for EPC fluid pressure to leak to exhaust. Sonnax boost valve kit 104520-12K has upgraded materials and minimal clearances to prevent wear and restore proper hydraulic control. The sleeve also has a slightly larger EPC feed orifice to provide quicker throttle response. A new pressure regulator valve outer spring is also included to replace weakened original springs and provides a modest 5 psi increase across the pressure curve.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"spaced-vertical\" style=\"text-align: left;\"\u003e\n\u003cul\u003e\n\u003cli style=\"text-align: left;\"\u003eBoost sleeve is manufactured from highly wear-resistant billet aluminum to prevent wear\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003eLarger feed orifice provides quicker throttle response\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003eReplacement spring provides modest 5psi line pressure increase\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003eDrop-in Zip Valve™ parts install quickly and easily\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cb\u003e\u003c\/b\u003e\u003cspan style=\"font-size: large;\"\u003e\u003cb\u003e \u003c\/b\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"part-accordion cb spaced-vertical\" style=\"text-align: left;\"\u003e\n\u003cb\u003e \u003c\/b\u003e\n\u003cdiv id=\"components\"\u003e\n\u003cb\u003e \u003clabel for=\"components-panel\"\u003eContents\u003c\/label\u003e\u003c\/b\u003e\n\u003cdiv class=\"accordion-content\"\u003e\n\u003cul\u003e\n\u003cli\u003eValve\u003c\/li\u003e\n\u003cli\u003eSleeve\u003c\/li\u003e\n\u003cli\u003eSpring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"col-4\"\u003e\n\u003ch4\u003eSymptoms:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eLow line rise in Drive\u003c\/li\u003e\n\u003cli\u003eSoft shifts\u003c\/li\u003e\n\u003cli\u003eBurnt clutches\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cstrong\u003eCause:\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"part-accordion cb spaced-vertical\" style=\"text-align: left;\"\u003eWear of the boost valve sleeve allows EPC fluid pressure escape to exhaust.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Sonnax","offers":[{"title":"Default Title","offer_id":48186609303774,"sku":"S45507ATK","price":27.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/5464\/5470\/files\/S45507ATK_1_620f4d15-ec22-4dfe-8c01-658d09d02135.jpg?v=1777576025","url":"https:\/\/transmissioncenter.net\/products\/6l80-6l90-pump-pressure-boost-valve-kit-sonnax-104520-12k","provider":"Transmission Center","version":"1.0","type":"link"}