{"product_id":"single-plane-efi-intake-manifold-w-fuel-rails-300-137-for-gm-gen-ls1-ls2-ls6","title":"Single-Plane EFI Intake Manifold w\/ Fuel Rails 300-137 For GM Gen LS1 LS2 LS6","description":"\u003ch2\u003eSingle-Plane EFI Intake Manifold with Fuel Rails (300-137) for GM Gen LS1 LS2 LS6\u003c\/h2\u003e\u003cp\u003eEnhance your engine's power and efficiency with this premium aftermarket single-plane EFI intake manifold. Specifically designed for GM Gen III and IV LS engines, this manifold is an excellent upgrade for drivers seeking improved high-RPM performance and airflow. This product is a high-quality aftermarket component, offering a performance-driven alternative to original equipment manufacturer parts, and comes complete with fuel rails for a streamlined installation.\u003c\/p\u003e\u003ch3\u003eKey Features \u0026amp; Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSingle-plane plenum design optimized for mid-to-high RPM performance.\u003c\/li\u003e\n\u003cli\u003eIntegrated high-flow fuel rails included for consistent fuel delivery.\u003c\/li\u003e\n\u003cli\u003ePrecision-cast aluminum construction for maximum durability and heat dissipation.\u003c\/li\u003e\n\u003cli\u003eDesigned for cathedral port heads to ensure optimal air intake.\u003c\/li\u003e\n\u003cli\u003eIdeal for fuel-injected street and strip applications.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible Models\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGM LS1 (5.7L)\u003c\/li\u003e\n\u003cli\u003eGM LS2 (6.0L)\u003c\/li\u003e\n\u003cli\u003eGM LS6 (5.7L)\u003c\/li\u003e\n\u003cli\u003eGen III \u0026amp; IV LS-Based Engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 300-137\u003c\/li\u003e\n\u003cli\u003eProduct Type: EFI Intake Manifold\u003c\/li\u003e\n\u003cli\u003eManifold Style: Single-Plane\u003c\/li\u003e\n\u003cli\u003ePort Style: Cathedral Port\u003c\/li\u003e\n\u003cli\u003eFuel Rails Included: Yes\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIs this an OEM part?\u003c\/strong\u003e\u003cbr\u003eNo, this is a high-performance aftermarket part. It is engineered to meet or exceed standard specifications while remaining an affordable alternative to OEM replacements.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I confirm compatibility?\u003c\/strong\u003e\u003cbr\u003eYou can confirm fitment by verifying that your engine uses cathedral port cylinder heads and is an LS1, LS2, or LS6 model. Comparing your current setup to the part number 300-137 is also recommended.\u003c\/p\u003e\u003chr\u003e\u003cem\u003eImportant: This is a premium aftermarket part and is not manufactured by the original equipment manufacturer (OEM). Brand names and model numbers are used for reference purposes only. Compatibility may vary depending on the machine's serial number. Please verify fitment before purchase.\u003c\/em\u003e","brand":"DURAFORCE","offers":[{"title":"Default Title","offer_id":53378243592465,"sku":"ZZ2S00040","price":430.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/2446\/2929\/files\/12_0e036fa4-cf85-4d75-9ba0-224be1e2f64d.jpg?v=1775396856","url":"https:\/\/www.duraforce.com\/products\/single-plane-efi-intake-manifold-w-fuel-rails-300-137-for-gm-gen-ls1-ls2-ls6","provider":"DURAFORCE","version":"1.0","type":"link"}