{"product_id":"spectre-coupler-4in-pvc-black","title":"Spectre Coupler 4in. (PVC) - Black","description":"\u003cp\u003eThe Spectre Coupler 4in. (PVC) in Black (part number 9771) is a straight-style PVC silicone coupler designed to join two 4-inch OD intake tubes, ducting hoses, or air box connections in naturally aspirated applications. The 9771 provides a secure, air-tight connection with included stainless steel worm-gear hose clamps, making it a fast and reliable solution for custom cold-air intake builds, air box extensions, and intake ducting repairs. Note: this coupler is not rated for pressurized applications such as turbocharger or supercharger outlets.\u003c\/p\u003e\n\n\u003ch4\u003eFeatures and Benefits\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e4-inch inside diameter fits standard 4in OD intake tubes and ducting components\u003c\/li\u003e\n\u003cli\u003ePVC construction provides flexibility for easy installation and vibration absorption\u003c\/li\u003e\n\u003cli\u003eBlack finish blends cleanly with most engine bay setups\u003c\/li\u003e\n\u003cli\u003eIncludes stainless steel worm-gear hose clamps for secure, rattle-free retention\u003c\/li\u003e\n\u003cli\u003eStraight coupler design for direct tube-to-tube connections at the same diameter\u003c\/li\u003e\n\u003cli\u003eSuitable for naturally aspirated cold-air intake, ram air, and inlet ducting applications\u003c\/li\u003e\n\u003cli\u003eLightweight and easy to trim if needed for tight fitment scenarios\u003c\/li\u003e\n\u003cli\u003eSpectre quality construction for consistent material thickness and durability\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\u003e9771\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\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePVC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInside Diameter\u003c\/td\u003e\n\u003ctd\u003e4 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoupler Style\u003c\/td\u003e\n\u003ctd\u003eStraight (same-diameter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardware Included\u003c\/td\u003e\n\u003ctd\u003eStainless steel worm-gear hose clamps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eNaturally aspirated intake \/ ducting only (non-pressurized)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eSpectre Performance limited warranty\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\u003e1 x Spectre 9771 PVC straight coupler (4in ID, black)\u003c\/li\u003e\n\u003cli\u003eStainless steel worm-gear hose clamps\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eWhat tube size does the Spectre 9771 fit?\u003c\/strong\u003e\u003cbr\u003e\nThe 9771 is sized for 4-inch inside diameter, which mates with standard 4in OD tubing used in most large-diameter cold-air intake kits and air duct assemblies.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan the Spectre 9771 be used on a turbocharged or supercharged vehicle?\u003c\/strong\u003e\u003cbr\u003e\nNo. This coupler is PVC construction and is not rated for pressurized systems. It is intended for naturally aspirated intake and ducting use only. For boosted applications, use a silicone coupler rated for boost pressure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes the 9771 include hose clamps?\u003c\/strong\u003e\u003cbr\u003e\nYes, stainless steel worm-gear hose clamps are included with the Spectre 9771 for secure, leak-free installation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the 9771 and the 97711?\u003c\/strong\u003e\u003cbr\u003e\nBoth are 4-inch black PVC straight couplers, but they may differ in length or wall construction. The 9771 is the standard straight coupler version. Check the dimensions before ordering if you have strict length requirements.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs the Spectre 9771 compatible with aluminum intake tubes?\u003c\/strong\u003e\u003cbr\u003e\nYes. PVC couplers work with aluminum, plastic, ABS, and steel tubes of the correct diameter. The clamps grip the outer surface of whatever tube you insert into the coupler.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan this coupler be painted or wrapped?\u003c\/strong\u003e\u003cbr\u003e\nPVC does not hold paint well without primer. For cosmetic changes, use heat-wrap tape or a rubber-compatible spray primer before applying color. Alternatively, the black color blends unobtrusively in most engine bays as-is.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill this work as a replacement coupler in a factory intake system?\u003c\/strong\u003e\u003cbr\u003e\nThe 9771 can work as a service replacement if the factory connection uses a 4-inch straight coupler with worm-gear clamp retention. Confirm the OD of your factory tubing and the existing coupler dimensions before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow should the 9771 be installed to prevent leaks?\u003c\/strong\u003e\u003cbr\u003e\nInsert both tube ends fully into the coupler, center the coupler on the joint, and tighten each worm-gear clamp evenly to 30-35 in-lb. Over-tightening can deform the PVC, so use a torque screwdriver or hand-tighten snugly with a nut driver.\u003c\/p\u003e\n\n\u003ch4\u003eInstallation Instructions\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eEnsure all intake tube ends are clean and free of burrs or sharp edges that could damage the coupler.\u003c\/li\u003e\n\u003cli\u003eSlide one hose clamp over each tube end before insertion.\u003c\/li\u003e\n\u003cli\u003eInsert one tube end fully into one side of the Spectre 9771 coupler, centering the tube in the coupler bore.\u003c\/li\u003e\n\u003cli\u003eInsert the second tube end into the opposite side of the coupler.\u003c\/li\u003e\n\u003cli\u003ePosition each hose clamp over the coupler-to-tube overlap zone, approximately 0.5in from the tube end.\u003c\/li\u003e\n\u003cli\u003eTighten clamps evenly to secure the coupler without over-compressing the PVC.\u003c\/li\u003e\n\u003cli\u003eInspect the assembly for any gaps or misalignment before returning to service.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003eProposition 65 Warning:\u003c\/strong\u003e This product can expose you to chemicals including Diisononyl Phthalate (DINP), which is known to the State of California to cause cancer. For more information, go to \u003ca href=\"https:\/\/www.p65warnings.ca.gov\"\u003ewww.P65Warnings.ca.gov\u003c\/a\u003e.\u003c\/p\u003e","brand":"Spectre","offers":[{"title":"Default Title","offer_id":40482907684943,"sku":"SPE9771","price":23.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/spectre-coupler-4in_-pvc-black-silicone-couplers-hoses-spectre-2.jpg?v=1699980320","url":"https:\/\/www.blackopsautoworks.com\/products\/spectre-coupler-4in-pvc-black","provider":"Black Ops Auto Works","version":"1.0","type":"link"}