{"product_id":"stock-head-w-seats-and-guides-40mm-intake-35-5mm-exhaust","title":"Stock Head W\/ seats and guides 40mm Intake 35.5mm Exhaust","description":"\u003cp\u003e\u003cstrong\u003eAA 500 Series Casting\u003c\/strong\u003e\u003cstrong style=\"line-height: 1.2; font-size: 14px;\"\u003eWith seatsand guides40mm Intake 35.5mm Exhaust\u003c\/strong\u003e\u003cstrong\u003e, It is set up to build the performance Head of your needs.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe 500Series Castings come STD with: Cleanflowingcooling vanes, formaximumcooling through the head, and around the intake ports forincreasedHP and over all cooling. Amodernized Combustionchamber, for increased head flow \u0026amp; performance. AsecondFull Fin, soyou\u003c\/strong\u003e\u003cstrong\u003ecanFlycutyourheads deeper to achieve almost any desired Head CC volume needed. Blocked off rocker stud bosses, to eliminate the O-ring and stoppossibleoil leaks. Long reach \u003cstrong\u003e3\/4 Inch \u003c\/strong\u003eSparkPlugs, toreduce the chance of cracking betweenthe Valve seat and Plug.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCasting: \u003c\/strong\u003eAA 500\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eValve Size: \u003c\/strong\u003eN\/A\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eHead Bore: \u003c\/b\u003e85.5\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlug Size:\u003c\/strong\u003e 12mm (ReplacementNGK Number is D8EA)\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e","brand":"AA Performance Products","offers":[{"title":"Default Title","offer_id":46603709841598,"sku":"031 500 420","price":219.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0655\/6323\/0398\/files\/043-101-355caa-2_83d4a33f-8d89-44cc-a8f5-9d0f5ba969e2.jpg?v=1776113841","url":"https:\/\/gex-international.myshopify.com\/products\/stock-head-w-seats-and-guides-40mm-intake-35-5mm-exhaust","provider":"GEX_AA Performance","version":"1.0","type":"link"}