{"product":{"id":11350205792598,"title":"Kooks 23-degree SBC 1-5\/8-inch Header Flange (Oval Port) | 7030-S","body_html":"\u003ch2\u003eThe right flange for your 23-degree SBC headers\u003c\/h2\u003e\u003cp\u003eMake your custom headers around the cylinder heads you are actually using. This Kooks flange is made for 23-degree small block Chevrolet, with 3\/8-inch-thick 304 stainless steel and 1-5\/8-inch primary-tube ports.\u003c\/p\u003e\u003cp\u003eSKU: 7030-S\u003c\/p\u003e\u003ch2\u003eMatch your cylinder heads\u003c\/h2\u003e\u003cp\u003eThe stock bolt pattern lets your fabricator match the flange to the head before laying out the primary tubes. The oval port shape matters as well as the tube size when choosing between similar-looking flanges.\u003c\/p\u003e\u003ch2\u003eMade for custom header fabrication\u003c\/h2\u003e\u003cp\u003eThe 3\/8-inch flange provides the head-side mounting piece for your fabricated header. It is supplied individually, so you can replace one side or choose the matching flanges for both banks. Your fabricator can then position the tubes around your engine bay and the rest of your exhaust.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv class=\"table-scroll\"\u003e\u003ctable class=\"technical-specifications\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eSpecification\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003e7030-S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine \/ cylinder-head application\u003c\/td\u003e\n\u003ctd\u003e23-degree small block Chevrolet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e304 stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange thickness\u003c\/td\u003e\n\u003ctd\u003e3\/8-inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBolt pattern\u003c\/td\u003e\n\u003ctd\u003eStock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary tube size\u003c\/td\u003e\n\u003ctd\u003e1-5\/8-inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePort shape\u003c\/td\u003e\n\u003ctd\u003eOval\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupplied quantity\u003c\/td\u003e\n\u003ctd\u003eOne flange\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs this supplied as a pair?\u003c\/h3\u003e\u003cp\u003eIt is one flange. For headers on both cylinder banks, choose the appropriate flange for each side.\u003c\/p\u003e\u003ch3\u003eWhat should my fabricator match?\u003c\/h3\u003e\u003cp\u003eMatch the cylinder-head bolt pattern, oval port shape and 1-5\/8-inch primary-tube size. The engine \/ head application and flange thickness are listed in the specifications below.\u003c\/p\u003e\u003ch2\u003eOrdering and delivery\u003c\/h2\u003e\u003cp\u003eEstimated lead time is 4-6 weeks. Delivery may be faster depending on stock levels. Shipping is charged separately.\u003c\/p\u003e","vendor":"Kooks","product_type":"Exhaust Fabrication Components","created_at":"2026-10-08T10:41:01+01:00","handle":"kooks-7030-s","updated_at":"2026-10-11T10:15:14+01:00","published_at":"2026-10-09T13:43:49+01:00","template_suffix":null,"published_scope":"global","tags":"brand:kooks, cat:exhausts, class:equipment-service-non-vehicle, dept:performance-parts, type:exhaust-fabrication-component","variants":[{"id":55646892523862,"product_id":11350205792598,"title":"Default Title","price":"60.11","sku":"7030-S","position":1,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"Default Title","option2":null,"option3":null,"created_at":"2026-10-08T10:41:01+01:00","updated_at":"2026-10-11T10:15:14+01:00","taxable":true,"barcode":"842422176471","grams":1814,"image_id":null,"weight":1.814,"weight_unit":"kg","requires_shipping":true,"quantity_rule":{"min":1,"max":null,"increment":1},"price_currency":"GBP","compare_at_price_currency":"","quantity_price_breaks":[]}],"options":[{"id":14512386769238,"product_id":11350205792598,"name":"Title","position":1,"values":["Default Title"]}],"images":[{"id":86449193484630,"product_id":11350205792598,"position":1,"created_at":"2026-10-08T10:41:01+01:00","updated_at":"2026-10-08T10:41:06+01:00","alt":"Kooks 23 Degree SBC Header Flange - 3\/8\" Thick Stainless - for 1-5\/8\" Primaries","width":5008,"height":3336,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/03dfa636b8c10010bfc4a99fcc303152_23378391-7995-4455-982f-e9eeed4dfc79.jpg?v=1791452466","variant_ids":[]}],"image":{"id":86449193484630,"product_id":11350205792598,"position":1,"created_at":"2026-10-08T10:41:01+01:00","updated_at":"2026-10-08T10:41:06+01:00","alt":"Kooks 23 Degree SBC Header Flange - 3\/8\" Thick Stainless - for 1-5\/8\" Primaries","width":5008,"height":3336,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/03dfa636b8c10010bfc4a99fcc303152_23378391-7995-4455-982f-e9eeed4dfc79.jpg?v=1791452466","variant_ids":[]}}}