{"product_id":"holley-2300-4150-4160-annular-booster-insert-12-hole-500-i-d","title":"Holley 2300 4150 4160 Annular Booster Insert 12 Hole .500 I.D.","description":"\u003ch4\u003e\u003cstrong\u003e\u003cspan\u003eAnnular Booster Insert .500 ID has 12 discharge holes that measure .062″.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h4\u003e\n\u003ch5\u003e\u003cstrong\u003e\u003cspan\u003e This insert is available in Red, Blue, Silver and Black. The listing is for a single insert.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnnular booster inserts with 12 discharge holes\u003c\/strong\u003e to improve fuel atomisation and throttle response\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e.500 inch internal diameter\u003c\/strong\u003e suitable for performance Holley-style carburettors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBillet Alloy construction\u003c\/strong\u003e \u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003cstrong\u003eYou will need the banjo's to fit these booster inserts into which are sold separately\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese annular booster inserts are designed to upgrade or replace existing boosters in Holley-style carburettors, improving fuel atomisation and drivability across the rpm range. Each insert features twelve precisely sized discharge holes to deliver a finer fuel spray, helping reduce flat spots and improve throttle response.\u003c\/p\u003e\n\u003cp\u003eThe inserts press into the booster banjo. Installation requires a swedging booster installation tool to correctly seat and secure the banjos.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert internal diameter:\u003c\/strong\u003e .500 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDischarge holes:\u003c\/strong\u003e 12 holes, .062 inch each\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePress-in surface diameter:\u003c\/strong\u003e .80 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall insert length:\u003c\/strong\u003e .88 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour:\u003c\/strong\u003e Black,red,silver,blue\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Billet aluminium\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA swedging booster installation tool is required for installation of the banjo, or contact us for fitting service. Always confirm compatibility with your carburettor before purchase.\u003c\/p\u003e","brand":"Holley","offers":[{"title":"Black","offer_id":46351503589473,"sku":"HP-45291BLKi","price":32.0,"currency_code":"AUD","in_stock":true},{"title":"Red","offer_id":46351504015457,"sku":"HP-45291Ri","price":32.0,"currency_code":"AUD","in_stock":false},{"title":"Silver","offer_id":46351507292257,"sku":"HP-45291Si","price":32.0,"currency_code":"AUD","in_stock":true},{"title":"Blue","offer_id":46351507390561,"sku":"HP-45291BLi","price":32.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0568\/2282\/5057\/files\/booster_insert.png?v=1786191078","url":"https:\/\/carbparts.com.au\/products\/holley-2300-4150-4160-annular-booster-insert-12-hole-500-i-d","provider":"Carb Parts","version":"1.0","type":"link"}