{"product_id":"8x1-25-intake-manifold-bolt-for-chevy-gen-iii-ls-3-8-flanges-4-8-5-3-6-0-6-2l","title":"8x1.25 Intake Manifold Bolt for Chevy Gen III LS 3\/8 Flanges 4.8 5.3 6.0 6.2L","description":"\u003cstrong\u003eThis Intake Manifold Bolt is a high-strength M8 x 1.25 threaded bolt with a 3\/8\" flange, compatible with Chevy Gen III\/LS engines including 4.8L, 5.3L, 6.0L, and 6.2L models.\u003c\/strong\u003e \u003ch2\u003eProduct Overview\u003c\/h2\u003e \u003cp\u003eThis M8 x 1.25 intake manifold bolt secures intake manifolds to cylinder heads on Chevy Gen III and LS V8 engines. It features a 3\/8\" flange for even clamping force, preventing vacuum leaks and ensuring proper manifold alignment. Ideal for engine builders, mechanics, and DIY enthusiasts working on 4.8L, 5.3L, 6.0L, and 6.2L LS engines.\u003c\/p\u003e \u003ch3\u003eKey Features \u0026amp; Performance\u003c\/h3\u003e \u003cul\u003e \u003cli\u003ePrecision M8 x 1.25 thread pitch for exact fitment in LS cylinder heads\u003c\/li\u003e \u003cli\u003e3\/8\" flange diameter distributes clamping force evenly, preventing manifold warping\u003c\/li\u003e \u003cli\u003eHigh-strength alloy steel construction resists torque and heat cycling\u003c\/li\u003e \u003cli\u003eEngineered to meet or exceed OEM torque specifications\u003c\/li\u003e \u003cli\u003eDirect replacement for factory bolts on 4.8L, 5.3L, 6.0L, and 6.2L LS engines\u003c\/li\u003e \u003cli\u003eCorrosion-resistant plating for long-lasting durability\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eChevrolet Gen III and LS-based V8 engines\u003c\/li\u003e \u003cli\u003e4.8L (LR4, LY2)\u003c\/li\u003e \u003cli\u003e5.3L (LM7, L59, L33, LH6, and others)\u003c\/li\u003e \u003cli\u003e6.0L (LQ4, LQ9, LS2, and others)\u003c\/li\u003e \u003cli\u003e6.2L (L92, L9H, LS3, and others)\u003c\/li\u003e \u003cli\u003eDesigned for 3\/8\" flange-style intake manifold bolts\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eCommon Uses\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eSecuring intake manifolds during engine assembly or rebuilds\u003c\/li\u003e \u003cli\u003eReplacing broken or corroded manifold bolts\u003c\/li\u003e \u003cli\u003eUpgrading fasteners for high-performance LS engine builds\u003c\/li\u003e \u003cli\u003eEnsuring leak-free manifold seals on street and race applications\u003c\/li\u003e \u003cli\u003eRestoring factory torque specifications on used engines\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eTechnical Specifications\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eHead Style:\u003c\/strong\u003e Flanged hex\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e M8 x 1.25\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFlange Diameter:\u003c\/strong\u003e 3\/8\"\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompatible Engines:\u003c\/strong\u003e Chevy Gen III\/LS 4.8L, 5.3L, 6.0L, 6.2L\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e \u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e What torque specification should I use for this manifold bolt? \u003cstrong\u003eA:\u003c\/strong\u003e Always follow the factory service manual for your specific LS engine; typical values are around 44 inch-pounds plus an additional angle, but variations exist.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Will this bolt fit all Gen III\/LS intake manifolds? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, it is designed for 3\/8\" flange intake manifolds on 4.8L, 5.3L, 6.0L, and 6.2L engines, but verify your manifold flange size before installation.\u003c\/p\u003e \u003cp\u003e\u003cem\u003eProduct appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.\u003c\/em\u003e\u003c\/p\u003e","brand":"DURAFORCE","offers":[{"title":"Default Title","offer_id":53679732064529,"sku":"ZZ3A00006","price":45.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/2446\/2929\/files\/57_a48b8439-25fc-4398-ac13-2499805224f9.jpg?v=1781654651","url":"https:\/\/www.duraforce.com\/products\/8x1-25-intake-manifold-bolt-for-chevy-gen-iii-ls-3-8-flanges-4-8-5-3-6-0-6-2l","provider":"DURAFORCE","version":"1.0","type":"link"}