{"product_id":"aegisautos-holley-main-jet-kit-72-piece-sizes-64-99-brass-1-4-32-thread-numbered-case","title":"AegisAutos Holley Main Jet Kit 72-Piece (Sizes 64–99) — Brass 1\/4\"-32 Thread, Numbered Case","description":"\u003cp\u003e\u003cstrong\u003eAegisAutos 72-piece main jet kit supplies two of each brass jet from sizes 64 through 99, organized in a numbered storage case for precise tuning of Holley 2010\/2300\/4150\/4500 carburetors.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis comprehensive assortment gives tuners and mechanics the range needed to dial in fuel metering for many Holley performance carburetors. The kit includes 72 brass jets, two of every size between 64 and 99, in a compact plastic case with numbered compartments. Each jet uses a 1\/4\"-32 thread and is compatible with numerous Holley model numbers, making it a practical addition to any repair bench, track toolbox, or home garage.\u003c\/p\u003e\n\n\u003ch3\u003eHow will these jets help me tune my Holley carburetor?\u003c\/h3\u003e\n\u003cp\u003eThe variety of sizes lets you adjust main fuel flow to match engine modifications, altitude, or fuel grade without resorting to guesswork. Swapping jets changes the carburetor's fuel curve to improve throttle response and consistency across RPM ranges.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncludes two of every size from 64–99 for gradual step changes.\u003c\/li\u003e\n  \u003cli\u003eBrass construction resists wear and maintains accurate orifice dimensions.\u003c\/li\u003e\n  \u003cli\u003e1\/4\"-32 thread fits Holley 2010\/2300\/4010\/4011\/4150\/4160\/4500 models.\u003c\/li\u003e\n  \u003cli\u003eNumbered case keeps sizes organized for quick jet swaps.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat exactly is included and how is it organized?\u003c\/h3\u003e\n\u003cp\u003eThe kit contains 72 jets—two pieces for each integer size between 64 and 99—housed in a molded plastic case with marked slots. This layout prevents mixing and speeds identification during tuning sessions, reducing downtime at the workbench or track.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e72 jets total: two of each size 64 through 99.\u003c\/li\u003e\n  \u003cli\u003ePlastic storage box with numeric markings for each compartment.\u003c\/li\u003e\n  \u003cli\u003eCompact footprint that fits toolbox drawers or garage shelves.\u003c\/li\u003e\n  \u003cli\u003eClear labeling reduces selection errors under pressure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre these jets durable and accurate enough for repeated tuning?\u003c\/h3\u003e\n\u003cp\u003eMade from high-quality brass, the jets resist corrosion and maintain their drilled orifice over repeated installation cycles. Brass is a standard material for carburetor jets due to its machinability and stable long-term dimensions, which support consistent metering results.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-quality brass construction for wear resistance.\u003c\/li\u003e\n  \u003cli\u003ePrecision-drilled orifices to keep fuel metering consistent.\u003c\/li\u003e\n  \u003cli\u003eTwo-of-each provision lets you keep spares on hand for track or field use.\u003c\/li\u003e\n  \u003cli\u003eEasy to clean and reinstall between tuning runs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich Holley models and thread size are compatible with this kit?\u003c\/h3\u003e\n\u003cp\u003eThe jets are designed to fit common Holley carburetor models including 2010, 2300, 4010, 4011, 4150, 4160 and 4500, all using a 1\/4\"-32 threaded main jet seat. Confirm your carburetor model and thread spec before installing to ensure proper fit and function.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits Holley: 2010, 2300, 4010, 4011, 4150, 4160, 4500.\u003c\/li\u003e\n  \u003cli\u003eThread size: 1\/4\"-32 standard main jet thread.\u003c\/li\u003e\n  \u003cli\u003eRecommended to verify model and jet seat before purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The AegisAutos 36-181 main jet kit is aimed at hobbyist mechanics, performance tuners, restoration shops, and trackside crews who need a wide selection of main jets for carburetor dialing. If you work on Holley-based engines or frequently adjust fuel mixture for altitude, weather, or engine modifications, this kit supplies the range and organization to make tuning faster and more reliable. Contact AegisAutos support if you need help confirming compatibility before ordering.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do these jets fit Holley 4150 and 4500 carburetors?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The kit fits Holley 4150 and 4500 models and other listed Holley types using 1\/4\"-32 threaded main jets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How many of each jet size are included?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Two jets of each integer size from 64 through 99 are included, totaling 72 jets.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"AegisAutos","offers":[{"title":"Default Title","offer_id":55168346587479,"sku":"B0FPX7C5JY","price":57.41,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/aegisautos-main-jet-kit-open-case.jpg?v=1790401191","url":"https:\/\/britishgarage.co.uk\/products\/aegisautos-holley-main-jet-kit-72-piece-sizes-64-99-brass-1-4-32-thread-numbered-case","provider":"British Garage","version":"1.0","type":"link"}