{"product_id":"s-s-cast-iron-valve-guide-in-ex-002-36-47-knucklehead-knuckles-with-s-s-valve-spring-covers-s-s-kn-engines","title":"S\u0026S, cast iron valve guide in\/ex. +.002\" - 36-47 Knucklehead; Knuckles with S\u0026S valve spring covers; S\u0026S KN engines","description":"With a special outer diameter to accommodate S\u0026amp;S KN \/ Flathead Power valve spring covers. Will also fit stock Knuckle and S\u0026amp;S KN engine applications.   OEM replacement reference 18187-40 (old 167-408).","brand":"S\u0026S","offers":[{"title":"Default Title","offer_id":47765645820248,"sku":"532593","price":56.97,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0142\/0777\/8870\/files\/532593k.jpg?v=1706795026","url":"https:\/\/roadsiderepairshop.com\/products\/s-s-cast-iron-valve-guide-in-ex-002-36-47-knucklehead-knuckles-with-s-s-valve-spring-covers-s-s-kn-engines","provider":"Roadside Repair Shop","version":"1.0","type":"link"}