{"product_id":"spectre-4-pvc-90-intake-boot-black-4-od-elbow-with-clamps-compact-fit-for-tight-engine-bays","title":"Spectre 4\" PVC 90° Intake Boot — Black 4\" OD Elbow with Clamps, Compact Fit for Tight Engine Bays","description":"\u003cp\u003e\u003cstrong\u003eThe Spectre Performance 9781 is a black 4\" outside-diameter PVC 90° intake boot that links two 4\" intake tubes and ships with two stainless steel worm-gear clamps for a secure seal.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis molded elbow is designed to route airflow where a straight coupler won't fit, making it a compact option for tight engine bays and custom cold-air or replacement intake assemblies. Built from durable PVC and sized to join two 4\" outside-diameter tubes, the 9781 gives an easy, low-cost solution for non-forced-induction applications where a smooth change of direction is needed.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this elbow help in tight engine bay layouts?\u003c\/h3\u003e\n\n\u003cp\u003eThe 90° bend lets you change airflow direction without fabricating custom tube sections, saving space and time during installation. Its compact profile reduces the footprint compared with longer routed tubing while maintaining a consistent internal diameter for unrestricted airflow.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e4\" outside-diameter design matches standard 4\" intake tubes.\u003c\/li\u003e\n  \u003cli\u003eCompact 90° bend fits where straight tubing cannot.\u003c\/li\u003e\n  \u003cli\u003ePVC construction resists common shop chemicals and road debris.\u003c\/li\u003e\n  \u003cli\u003eIncludes two clamps to secure both ends immediately.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs the Spectre 9781 easy to install and secure?\u003c\/h3\u003e\n\n\u003cp\u003eYes — installation is straightforward: slide each tube onto the coupler ends and tighten the supplied stainless steel worm-gear clamps. No special tools or welding are required, and the clamps allow incremental tightening for a snug fit without deforming the PVC.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eShips with two stainless steel worm-gear hose clamps for both connections.\u003c\/li\u003e\n  \u003cli\u003eClamp adjustment offers precise sealing without permanent modification.\u003c\/li\u003e\n  \u003cli\u003eFits standard 4\" OD intake tubes, reducing alignment work.\u003c\/li\u003e\n  \u003cli\u003eQuick-install design cuts installation time versus custom piping.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I know about materials and performance limits?\u003c\/h3\u003e\n\n\u003cp\u003eThe elbow is molded from PVC, chosen for affordability and chemical resistance in typical intake applications. It is intended for naturally aspirated setups and everyday driving conditions; it is not recommended for turbocharged or supercharged engines where higher pressures and temperatures exceed PVC capability.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003ePVC construction — cost-effective and corrosion-resistant for intake use.\u003c\/li\u003e\n  \u003cli\u003eNot advised for forced-induction (turbo\/supercharged) systems.\u003c\/li\u003e\n  \u003cli\u003eBest used in ambient-to-moderate temperature under-hood environments.\u003c\/li\u003e\n  \u003cli\u003eDesigned for 4\" outside-diameter tube compatibility only.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this coupler work with aftermarket intake kits or replacement tubing?\u003c\/h3\u003e\n\n\u003cp\u003eThe 9781 is sized to mate directly with any component that uses a 4\" outside diameter, so it pairs well with many aftermarket intake tubes, filters, or replacement sections. Confirm the mating part's outside diameter — not inside diameter — before ordering to ensure a correct fit.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eConnects two 4\" OD components without adapters.\u003c\/li\u003e\n  \u003cli\u003eUseful for modifying or extending existing intake plumbing.\u003c\/li\u003e\n  \u003cli\u003eTwo clamps included to join common aftermarket tubing securely.\u003c\/li\u003e\n  \u003cli\u003eCheck OD measurements on aftermarket parts for compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Spectre Performance 9781 is aimed at DIY mechanics, restoration enthusiasts, and fabricators who need a simple, reliable 90° connection for 4\" outside-diameter intake tubes in naturally aspirated engines. If you need a low-cost, quick-install elbow for routing intake air in limited space and you're not using forced induction, this coupler provides a ready-to-use solution with hardware included.\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: Can I use this elbow on a turbocharged engine?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The 9781 is PVC and not recommended for turbocharged or supercharged applications due to higher pressure and temperature.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What tube size does this coupler fit?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It fits components with a 4\" outside diameter; verify OD (not ID) of your tubes before purchase.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Spectre","offers":[{"title":"Default Title","offer_id":48086774448286,"sku":"B001OMM6WS","price":52.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/spectre-9781-front-view.jpg?v=1785904579","url":"https:\/\/northtrailauto.ca\/products\/spectre-4-pvc-90-intake-boot-black-4-od-elbow-with-clamps-compact-fit-for-tight-engine-bays","provider":"North Trail Auto","version":"1.0","type":"link"}