{"product_id":"spectre-universal-tube-elbow-4in-od-x-16in-length-90-degree-aluminum","title":"Spectre Universal Tube Elbow 4in. OD x 16in. Length \/ 90 Degree - Aluminum","description":"\u003ch4\u003eSpectre 97991 Universal Aluminum Tube Elbow 4in. OD x 16in. \/ 90 Degree\u003c\/h4\u003e\n\u003cp\u003eThe Spectre 97991 is a mandrel-bent aluminum tube elbow measuring 4 inches in outside diameter with a 16-inch leg length and a 90-degree bend angle. Designed for custom air intake fabrication, intercooler piping, and heat-exchanger routing, the 97991 is CNC-formed from high-quality aluminum for a smooth interior surface that promotes consistent airflow with minimal turbulence. The polished finish adds a clean, professional look to any engine bay build.\u003c\/p\u003e\n\n\u003ch4\u003eFeatures and Benefits\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eMandrel-bent aluminum construction maintains consistent 4-inch inside diameter through the entire bend\u003c\/li\u003e\n  \u003cli\u003e16-inch straight leg provides ample length for routing in tight engine bays\u003c\/li\u003e\n  \u003cli\u003e90-degree bend angle suits a wide range of intake and intercooler piping layouts\u003c\/li\u003e\n  \u003cli\u003ePolished finish resists corrosion and enhances underhood appearance\u003c\/li\u003e\n  \u003cli\u003eSmooth interior bore reduces turbulence and pressure drop compared to cast fittings\u003c\/li\u003e\n  \u003cli\u003eCompatible with standard 4-inch silicone couplers and clamps\u003c\/li\u003e\n  \u003cli\u003eLightweight aluminum keeps total system weight low\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e97991\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSpectre Performance\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutside Diameter\u003c\/td\u003e\n\u003ctd\u003e4 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eLeg Length\u003c\/td\u003e\n\u003ctd\u003e16 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBend Angle\u003c\/td\u003e\n\u003ctd\u003e90 Degrees\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003ePolished\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWall Thickness\u003c\/td\u003e\n\u003ctd\u003eApproximately 2mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eUniversal - Custom Air Intake \/ Intercooler Piping\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eOne (1) Spectre 97991 aluminum 90-degree tube elbow, 4in. OD x 16in. length\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the outside diameter of the Spectre 97991?\u003c\/strong\u003e\u003cbr\u003e\nThe Spectre 97991 has a 4-inch outside diameter. Use 4-inch ID silicone couplers for connecting to other components in your intake or intercooler system.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow long is the straight leg on the 97991?\u003c\/strong\u003e\u003cbr\u003e\nThe 97991 features a 16-inch straight leg after the 90-degree bend, giving you extra routing length for complex engine bay layouts.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I use the Spectre 97991 for intercooler piping?\u003c\/strong\u003e\u003cbr\u003e\nYes, the 97991 is suitable for intercooler charge piping in custom turbo builds. The smooth bore and mandrel construction make it an excellent choice for pressure piping applications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat couplers are compatible with the Spectre 97991?\u003c\/strong\u003e\u003cbr\u003e\nAny standard 4-inch ID silicone coupler is compatible with the 97991. Spectre also offers matching silicone couplers and clamps that pair with this tube.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs the 97991 aluminum tube weldable?\u003c\/strong\u003e\u003cbr\u003e\nYes, the 97991 is made from weldable aluminum alloy, making it suitable for custom fabricators who need to TIG-weld additional fittings or bungs.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow does the Spectre 97991 compare to the 97990?\u003c\/strong\u003e\u003cbr\u003e\nBoth are 4-inch OD 90-degree elbows, but the 97991 has a 16-inch leg versus the 97990's 6-inch leg, providing significantly more routing length for complex installations.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes the Spectre 97991 require any additional hardware?\u003c\/strong\u003e\u003cbr\u003e\nThe 97991 tube elbow is sold individually. You will need silicone couplers, hose clamps, and any brackets or supports appropriate for your specific application.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat finish does the Spectre 97991 have?\u003c\/strong\u003e\u003cbr\u003e\nThe 97991 features a polished aluminum finish for a clean, professional appearance in the engine bay.\u003c\/p\u003e\n\n\u003ch4\u003eInstallation Overview\u003c\/h4\u003e\n\u003col\u003e\n  \u003cli\u003ePlan your intake or piping routing before beginning disassembly of existing components.\u003c\/li\u003e\n  \u003cli\u003eMeasure and confirm the 97991's 4-inch OD and 16-inch leg fit your intended routing path.\u003c\/li\u003e\n  \u003cli\u003eClean the mating ends of all connecting tubes and the 97991 elbow.\u003c\/li\u003e\n  \u003cli\u003eSlide a 4-inch ID silicone coupler over the end of the connecting tube.\u003c\/li\u003e\n  \u003cli\u003eInsert the 97991 elbow into the coupler and position it in the desired orientation.\u003c\/li\u003e\n  \u003cli\u003eRepeat on the other end with the mating component.\u003c\/li\u003e\n  \u003cli\u003eTighten all hose clamps evenly to the recommended torque to prevent air leaks.\u003c\/li\u003e\n  \u003cli\u003eStart the engine and inspect all connections for leaks before returning to service.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cem\u003eCalifornia Residents: This product may expose you to chemicals known to the State of California to cause cancer or reproductive harm. For more information, visit P65Warnings.ca.gov.\u003c\/em\u003e\u003c\/p\u003e","brand":"Spectre","offers":[{"title":"Default Title","offer_id":40482907947087,"sku":"SPE97991","price":133.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/spectre-universal-tube-elbow-4in_-od-x-16in_-length-90-degree-aluminum-aluminum-tubing-spectre.jpg?v=1699980544","url":"https:\/\/www.blackopsautoworks.com\/products\/spectre-universal-tube-elbow-4in-od-x-16in-length-90-degree-aluminum","provider":"Black Ops Auto Works","version":"1.0","type":"link"}