{"product_id":"rsg-engineered-rx-7-fc3s-s5-turbo-billet-thermostat-neck","title":"RSG Engineered RX-7 FC3S S5 Turbo Billet Thermostat Neck","description":"\u003cp\u003e\u003cstrong\u003eRSG FC3S S5 Billet Thermostat Neck\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRSG Engineered Billet Thermostat Neck\u003c\/strong\u003e is designed for the Mazda RX-7 FC3S \u003cstrong\u003eSeries 5 \/ Kouki\u003c\/strong\u003e cooling system.\u003c\/p\u003e\n\u003cp\u003eThe factory S5 uses a \u003cstrong\u003e3-bolt plastic thermostat cover\u003c\/strong\u003e, unlike the earlier S4 2-bolt arrangement. With decades of heat cycles and age, the original plastic component can become brittle, crack or deteriorate.\u003c\/p\u003e\n\u003cp\u003eThe RSG replacement is CNC machined from billet aluminium, eliminating the ageing plastic neck and providing a permanent upgrade for restored and performance FC3S builds.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKEY FEATURES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eRSG Engineered\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eMazda RX-7 \u003cstrong\u003eFC3S Series 5\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSuitable for \u003cstrong\u003eS5 Turbo \/ 13B Turbo II\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCNC-machined billet aluminium\u003c\/li\u003e\n\u003cli\u003eReplaces the original plastic thermostat neck\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e3-bolt S5 mounting pattern\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eIdeal for restoration and performance builds\u003c\/li\u003e\n\u003cli\u003eClean billet engine-bay appearance\u003c\/li\u003e\n\u003cli\u003eSmall-batch manufactured by RSG\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eS5 \/ 3-BOLT APPLICATION — NOT S4\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWorldwide Shipping Available.\u003c\/strong\u003e\u003c\/p\u003e","brand":"RSG Engineered","offers":[{"title":"Default Title","offer_id":58731670569344,"sku":"RSG-FC-S5-COOL-THNECK","price":148.68,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1013\/2573\/4272\/files\/RSG_Engineered_Mazda_RX-7_FC3S_S5_Turbo_billet_aluminium_thermostat_neck.png?v=1787561528","url":"https:\/\/rotarysecretgarage.com\/products\/rsg-engineered-rx-7-fc3s-s5-turbo-billet-thermostat-neck","provider":"Rotary Secret Garage","version":"1.0","type":"link"}