{"product_id":"coretortex-1-phenolic-carburetor-spacer-for-holley-afb-edelbrock-4bbl-open-center-insulating-kit-with-gaskets-hardware","title":"CoretorTex 1\" Phenolic Carburetor Spacer for Holley AFB \u0026 Edelbrock 4BBL — Open-Center, Insulating Kit with Gaskets \u0026 Hardware","description":"\u003cstrong\u003eCoretorTex 1\" open-center phenolic carburetor spacer reduces heat transfer and improves throttle response for 4-barrel square-bore carburetors.\u003c\/strong\u003e\n\nThe CoretorTex spacer is a one-inch-thick phenolic insulating adapter designed to fit square-bore 4-barrel carburetors such as Holley AFB and Edelbrock on small- and big-block Chevy and Ford 350 engines. Made to sit between the carburetor and intake manifold, this spacer helps isolate carburetor heat, protects fuel metering, and provides a consistent mounting flange with included gaskets and hardware for a complete install.\n\n\u003ch3\u003eHow does this spacer improve carburetor performance?\u003c\/h3\u003e\n\u003cp\u003eBy adding a phenolic barrier between the hot intake and the carburetor base, the spacer reduces heat soak into the carb body. Cooler carburetor temperatures help maintain denser fuel charge and more stable air-fuel metering under load.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOne-inch phenolic thickness for effective thermal isolation\u003c\/li\u003e\n  \u003cli\u003eOpen-center design maintains airflow and reduces obstruction\u003c\/li\u003e\n  \u003cli\u003eHelps stabilize idling and throttle response during extended use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this fit my Holley AFB or Edelbrock 4BBL carburetor?\u003c\/h3\u003e\n\u003cp\u003eThe spacer is made for square-bore 4-barrel carburetors and lists compatibility with Holley AFB, Edelbrock, and many common SBC\/BBC\/BB\/SB applications. Always verify bolt hole pattern, thread size, and physical dimensions before fitting to avoid misfitment.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits square-bore 4BBL carburetors on Chevy and Ford engines\u003c\/li\u003e\n  \u003cli\u003eM8 x 1.0 thread size for supplied bolts and hardware\u003c\/li\u003e\n  \u003cli\u003eConfirm part shape, hole pattern, and 1\" thickness against your carb and intake\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat’s included and how hard is installation?\u003c\/h3\u003e\n\u003cp\u003eThe CoretorTex kit arrives with the spacer, two gaskets and a bolt kit—enough to mount the carburetor securely. Installation is straightforward for anyone familiar with basic intake work; hand tools and proper torque specs are all that’s required.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncludes: 1 phenolic spacer, 2 gaskets, 4 bolts, 4 washers, 4 nuts\u003c\/li\u003e\n  \u003cli\u003eStandard hardware for M8 x 1.0 threaded applications\u003c\/li\u003e\n  \u003cli\u003eSimple bolt-on install, check torque and gasket alignment during assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre there precautions or fitment notes I should know?\u003c\/h3\u003e\n\u003cp\u003ePhenolic spacers are durable but can be damaged by overtightening or misalignment. Double-check the part photo, dimensions, and your carb\/manifold thread type before purchase to ensure correct fitment.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify bolt thread pitch and hole spacing against your carb and manifold\u003c\/li\u003e\n  \u003cli\u003eDo not overtighten bolts—follow recommended torque for carb studs\u003c\/li\u003e\n  \u003cli\u003eInspect gaskets for alignment to prevent vacuum leaks or seepage\u003c\/li\u003e\n\u003c\/ul\u003e\n\nWho is this for\n\nThis CoretorTex spacer is aimed at street rods, muscle-car owners, and performance hobbyists using square-bore 4-barrel carburetors who want an easy, cost-effective way to reduce heat-related carburetor issues. It’s ideal for mechanically inclined DIYers and professional technicians installing or upgrading carb setups on SBC, BBC, Ford 350, and other compatible 4BBL platforms who need a complete spacer-and-hardware solution in one purchase.\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this spacer fit Holley AFB 4-barrel carburetors?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—it's designed for square-bore 4BBL carbs like Holley AFB, but confirm bolt pattern and thread size before installing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I reuse my existing carb bolts with this spacer?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: You can if they match M8 x 1.0 thread size; otherwise use the included bolts and hardware for proper fit.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"CoretorTex","offers":[{"title":"Default Title","offer_id":55167497994583,"sku":"B0G56LRM4N","price":45.13,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/coretortex-front-face-spacer.jpg?v=1790387698","url":"https:\/\/britishgarage.co.uk\/products\/coretortex-1-phenolic-carburetor-spacer-for-holley-afb-edelbrock-4bbl-open-center-insulating-kit-with-gaskets-hardware","provider":"British Garage","version":"1.0","type":"link"}