{"product_id":"dual-valve-spring-kit-with-retainers","title":"Dual Valve Spring Kit with Retainers","description":"The Supertech Dual Valve Spring Kit (SPRK-AUDI18T-DR) provides a complete valvetrain overhaul solution for performance-oriented VW and Audi 1.8T 20-valve 4-cylinder engines.\n\nEach spring in this kit has been treated with a gas nitriding process and shot peening, significantly improving its fatigue life and durability under demanding conditions. Key specifications include a maximum lift of 14.70mm, a seat pressure of 91 lbs at 33.2mm, and an open pressure of 228 lbs at 11mm. The kit also includes matched retainers and seat locators.\n\n*   1997-1999 Audi A4\n*   1997-2000 Audi A4 Quattro\n*   1998-1999 Volkswagen Passat\n\nWhat's in the Box:\n*   20 - Springs\n*   20 - Retainers\n*   8 - Seat Locators","brand":"Supertech","offers":[{"title":"Default Title","offer_id":52663922721080,"sku":"SPRK-AUDI1.8T","price":586.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687720555.png?v=1784330863","url":"https:\/\/store.motormia.co\/products\/dual-valve-spring-kit-with-retainers","provider":"MOTORMIA","version":"1.0","type":"link"}