{"product_id":"k-n-stubstack-air-horn-5-13in-l-x-5-13in-w-x-1-68in-h","title":"K\u0026N Stubstack Air Horn 5.13in L x 5.13in W x 1.68in H","description":"This K\u0026amp;N Stubstack is designed to be used with Holley 390-850 cfm square bore carbs (4150\/4160), that have had the choke horn milled off and still use an air cleaner. Eliminates the need for hand polishing and radius work. Will work with all K\u0026amp;N Custom Chrome Racing Air Cleaners, including Tall Velocity Stack Air Cleaners. The K\u0026amp;N Stubstack is designed to increase the airflow of carburetors by decreasing the restriction around the choke horn.\u003cbr\u003e\u003ca href=\"https:\/\/d32vzsop7y1h3k.cloudfront.net\/740570481f4bc5d4f5f4a0ad62f9b9f3.PDF\"\u003eInstallation Instructions\u003c\/a\u003e\u003cbr\u003e","brand":"K\u0026N Engineering","offers":[{"title":"Default Title","offer_id":44009930293469,"sku":"KNN85-0400","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0590\/3758\/1491\/products\/23f5ca30138f5e43a52c956dfb254c23.jpg?v=1691595654","url":"https:\/\/hellhoundperformance.store\/products\/k-n-stubstack-air-horn-5-13in-l-x-5-13in-w-x-1-68in-h","provider":"Hellhound Performance","version":"1.0","type":"link"}