{"product":{"id":11350202843478,"title":"Kooks Ford 5.0 \/ 6.2 Header Bolt Kit, M10 x 1.25 - BK109","body_html":"\u003ch2\u003eGet your header installation back together with the right bolts\u003c\/h2\u003e\u003cp\u003eMissing or damaged hardware should not leave you guessing at thread pitch. The Kooks BK109 supplies sixteen stainless header bolts for the listed Ford 5.0 and 6.2 applications, with M10 x 1.25 fine threads and 25 mm length. Match that specification to the actual cylinder-head threads and header installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e BK109\u003c\/p\u003e\u003ch2\u003eThread pitch matters\u003c\/h2\u003e\u003cp\u003eM10 describes the thread diameter; 1.25 is the fine-thread pitch. This is different from the M10 x 1.50 coarse-thread kit. Use the actual engine and fastener specification when choosing replacement hardware.\u003c\/p\u003e\u003ch2\u003eUseful replacement hardware\u003c\/h2\u003e\u003cp\u003eKooks header packages generally include their header bolts. This kit is useful when hardware is lost or damaged, or for a matched replacement installation. Follow the fitting instructions for tightening and the first heat-cycle check.\u003c\/p\u003e\u003ch2\u003eVehicle fitment\u003c\/h2\u003e\u003ctable class=\"vehicle-fitment\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eYears\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eVehicle and trim\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eEngine\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eApplicable SKU \/ fitting conditions\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2010-2014\u003c\/td\u003e\n\u003ctd\u003eFord F-150 SVT Raptor\u003c\/td\u003e\n\u003ctd\u003e6.2L V8\u003c\/td\u003e\n\u003ctd\u003eBK109. M10 x 1.25 fine-thread header bolts; match the installed cylinder-head thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015-2020\u003c\/td\u003e\n\u003ctd\u003eFord F-150 XLT\u003c\/td\u003e\n\u003ctd\u003e5.0L V8\u003c\/td\u003e\n\u003ctd\u003eBK109. M10 x 1.25 fine-thread header bolts; match the installed cylinder-head thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015-2020\u003c\/td\u003e\n\u003ctd\u003eFord F-150 XL\u003c\/td\u003e\n\u003ctd\u003e5.0L V8\u003c\/td\u003e\n\u003ctd\u003eBK109. M10 x 1.25 fine-thread header bolts; match the installed cylinder-head thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015-2020\u003c\/td\u003e\n\u003ctd\u003eFord F-150 Lariat\u003c\/td\u003e\n\u003ctd\u003e5.0L V8\u003c\/td\u003e\n\u003ctd\u003eBK109. M10 x 1.25 fine-thread header bolts; match the installed cylinder-head thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015-2020\u003c\/td\u003e\n\u003ctd\u003eFord F-150 King Ranch\u003c\/td\u003e\n\u003ctd\u003e5.0L V8\u003c\/td\u003e\n\u003ctd\u003eBK109. M10 x 1.25 fine-thread header bolts; match the installed cylinder-head thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015-2020\u003c\/td\u003e\n\u003ctd\u003eFord F-150 Platinum\u003c\/td\u003e\n\u003ctd\u003e5.0L V8\u003c\/td\u003e\n\u003ctd\u003eBK109. M10 x 1.25 fine-thread header bolts; match the installed cylinder-head thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015-2021\u003c\/td\u003e\n\u003ctd\u003eFord Mustang GT\u003c\/td\u003e\n\u003ctd\u003e5.0L V8\u003c\/td\u003e\n\u003ctd\u003eBK109. M10 x 1.25 fine-thread header bolts; match the installed cylinder-head thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015-2021\u003c\/td\u003e\n\u003ctd\u003eFord Mustang GT Premium\u003c\/td\u003e\n\u003ctd\u003e5.0L V8\u003c\/td\u003e\n\u003ctd\u003eBK109. M10 x 1.25 fine-thread header bolts; match the installed cylinder-head thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015\u003c\/td\u003e\n\u003ctd\u003eFord Mustang GT 50 Years Limited Edition\u003c\/td\u003e\n\u003ctd\u003e5.0L V8\u003c\/td\u003e\n\u003ctd\u003eBK109. M10 x 1.25 fine-thread header bolts; match the installed cylinder-head thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2021-2023\u003c\/td\u003e\n\u003ctd\u003eFord Mustang Mach 1\u003c\/td\u003e\n\u003ctd\u003e5.0L V8\u003c\/td\u003e\n\u003ctd\u003eBK109. M10 x 1.25 fine-thread header bolts; match the installed cylinder-head thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2019-2020\u003c\/td\u003e\n\u003ctd\u003eFord Mustang Bullitt\u003c\/td\u003e\n\u003ctd\u003e5.0L V8\u003c\/td\u003e\n\u003ctd\u003eBK109. M10 x 1.25 fine-thread header bolts; match the installed cylinder-head thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\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\u003eBK109\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eListed Ford 5.0 \/ 6.2 header applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eStainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003eM10 x 1.25 fine thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e25 mm bolt length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003eSixteen bolts per kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eFAQs\u003c\/h2\u003e\u003ch3\u003eIs this the same thread as BK112?\u003c\/h3\u003e\u003cp\u003eNo. BK109 uses M10 x 1.25 fine threads; BK112 uses M10 x 1.50 coarse threads.\u003c\/p\u003e\u003ch3\u003eDo I need it with every new Kooks header kit?\u003c\/h3\u003e\u003cp\u003eHeader packages generally include their fitting bolts. This replacement kit is useful for missing or damaged hardware.\u003c\/p\u003e\u003ch3\u003eHow many bolts are supplied?\u003c\/h3\u003e\u003cp\u003eSixteen stainless header bolts.\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 Clamps and Hardware","created_at":"2026-10-08T10:40:48+01:00","handle":"kooks-bk109","updated_at":"2026-10-09T22:14:52+01:00","published_at":"2026-10-09T13:07:59+01:00","template_suffix":null,"published_scope":"global","tags":"brand:kooks, cat:exhausts, dept:performance-parts, fits:ford-f-150, fits:ford-mustang, make:ford, type:exhaust-hardware","variants":[{"id":55646888296790,"product_id":11350202843478,"title":"Default Title","price":"73.89","sku":"BK109","position":1,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"Default Title","option2":null,"option3":null,"created_at":"2026-10-08T10:40:48+01:00","updated_at":"2026-10-09T22:14:52+01:00","taxable":true,"barcode":"842422177256","grams":454,"image_id":null,"weight":0.454,"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":14512382902614,"product_id":11350202843478,"name":"Title","position":1,"values":["Default Title"]}],"images":[{"id":86449172578646,"product_id":11350202843478,"position":1,"created_at":"2026-10-08T10:40:48+01:00","updated_at":"2026-10-08T10:40:51+01:00","alt":"Kooks Coyote\/Raptor Header Bolt Kit (Fine Thread)","width":1080,"height":1080,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/3242c36c36204a9d3549dfdf20b55b73_987cb9c1-dde9-407e-804a-7c832d2e1df9.jpg?v=1791452451","variant_ids":[]},{"id":86449172611414,"product_id":11350202843478,"position":2,"created_at":"2026-10-08T10:40:48+01:00","updated_at":"2026-10-08T10:40:51+01:00","alt":"Kooks Coyote\/Raptor Header Bolt Kit (Fine Thread)","width":1080,"height":1080,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/07121604c61c93c62de90dd421017046.jpg?v=1791452451","variant_ids":[]},{"id":86449172644182,"product_id":11350202843478,"position":3,"created_at":"2026-10-08T10:40:48+01:00","updated_at":"2026-10-08T10:40:51+01:00","alt":"Kooks Coyote\/Raptor Header Bolt Kit (Fine Thread)","width":1080,"height":1080,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/f7fe31bd3afc52173fb1f8f704e2b2d8.jpg?v=1791452451","variant_ids":[]}],"image":{"id":86449172578646,"product_id":11350202843478,"position":1,"created_at":"2026-10-08T10:40:48+01:00","updated_at":"2026-10-08T10:40:51+01:00","alt":"Kooks Coyote\/Raptor Header Bolt Kit (Fine Thread)","width":1080,"height":1080,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/3242c36c36204a9d3549dfdf20b55b73_987cb9c1-dde9-407e-804a-7c832d2e1df9.jpg?v=1791452451","variant_ids":[]}}}