{"product_id":"501-series-performance-head-w-seats-and-guides-40-intake-35-5-exhaust","title":"501 Series Performance Head W\/ seats and guides 40 Intake 35.5 Exhaust","description":"\u003cp\u003e\u003cstrong\u003eMade from an AA 501 Series Casting, It is set up to build the performance Head of your needs. It comes with Seats 40x35.5, Guides, with a 12mm plug hole.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe 501 Series Castings come STD with: Increased material at the intake surface giving you the ability to make much bigger ports. A modernized Combustion chamber, for increased head flow \u0026amp; performance. A second Full Fin, so you can Fly cut your heads deeper to achieve almost any desired Head CC volume needed. Blocked off rocker stud bosses, to eliminate the O-ring and stop possible oil leaks. Long reach 3\/4 Inch Spark Plugs, to reduce the chance of cracking between the Valve seat and Plug.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCasting: \u003c\/strong\u003eAA 501\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eValve Size: \u003c\/strong\u003e40x35.5\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 (Replacement NGK Number is D8EA)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHead CC's: \u003c\/strong\u003e\u003cspan\u003e55\u003c\/span\u003e\u003c\/p\u003e","brand":"AA Performance Products","offers":[{"title":"Default Title","offer_id":46603297161406,"sku":"031 501 420","price":314.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0655\/6323\/0398\/files\/031-CH-501-Front_796219f9-5011-42c8-b7d9-8560a4a5735b.jpg?v=1776107785","url":"https:\/\/gex-international.myshopify.com\/products\/501-series-performance-head-w-seats-and-guides-40-intake-35-5-exhaust","provider":"GEX_AA Performance","version":"1.0","type":"link"}