{"product_id":"mishimoto-duracore-3-5in-to-4in-transition-coupler","title":"Mishimoto MMDCC-3540BK DuraCore Silicone Straight Transition Boot 3.5in to 4in","description":"\u003ch4\u003eVehicle Fitment\u003c\/h4\u003e\u003cul\u003e \u003cli\u003eUniversal fit - compatible with any custom intercooler piping, charge pipe, or turbo system requiring a straight 3.5\" to 4.0\" diameter transition silicone boot\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFitment Notes\u003c\/h4\u003e\u003cul\u003e \u003cli\u003eInlet Inside Diameter: 3.5 in. (88.9mm) - verify your smaller pipe's outer diameter before ordering\u003c\/li\u003e \u003cli\u003eOutlet Inside Diameter: 4.0 in. (101.6mm) - verify your larger pipe's outer diameter before ordering\u003c\/li\u003e \u003cli\u003eStraight profile - no angular bend; connects two pipes in-line while transitioning from 3.5\" to 4.0\" diameter\u003c\/li\u003e \u003cli\u003eIdeal for charge pipe or intercooler connections where pipe diameter increases without changing direction\u003c\/li\u003e \u003cli\u003eHose clamps are not included - use appropriately sized T-bolt or worm-gear clamps on each end\u003c\/li\u003e \u003cli\u003eAvailable in black (BK), blue (BL), and red (RD) - this listing is for the black version\u003c\/li\u003e \u003cli\u003ePart of the full Mishimoto DuraCore™ boot lineup: available in straight, straight hump, transition, 45-degree, and 90-degree configurations in 3\" to 4\" sizing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFeatures\u003c\/h4\u003e\u003cul\u003e \u003cli\u003eDuraCore™ synthetic inner layer provides superior resistance to heat, pressure, fuel, and oil versus standard silicone\u003c\/li\u003e \u003cli\u003eFive-layer silicone construction with heat-resistant embedded fibers delivers maximum structural integrity\u003c\/li\u003e \u003cli\u003eSmooth straight transition from 3.5\" to 4.0\" allows clean diameter step-up in custom piping layouts\u003c\/li\u003e \u003cli\u003eReinforcing rings at connection points lock the boot rigid under high boost to prevent blowouts\u003c\/li\u003e \u003cli\u003eEngineered for intercooler and charge pipe builds - withstands oil and fuel exposure in high-boost diesel and gas applications\u003c\/li\u003e \u003cli\u003eBlack finish provides a clean, professional underhood appearance\u003c\/li\u003e \u003cli\u003eBacked by the Mishimoto Lifetime Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecifications\u003c\/h4\u003e\u003cul\u003e \u003cli\u003ePart Number: MMDCC-3540BK\u003c\/li\u003e \u003cli\u003eInlet Inside Diameter: 3.5 in. (88.9mm)\u003c\/li\u003e \u003cli\u003eOutlet Inside Diameter: 4.0 in. (101.6mm)\u003c\/li\u003e \u003cli\u003eStyle: Straight Transition\u003c\/li\u003e \u003cli\u003eConstruction: 5-layer silicone with heat-resistant embedded fiber reinforcement\u003c\/li\u003e \u003cli\u003eInner Layer: DuraCore™ synthetic material (superior heat, pressure, fuel, and oil resistance)\u003c\/li\u003e \u003cli\u003eReinforcing Rings: Yes - at connection points for blowout resistance\u003c\/li\u003e \u003cli\u003eColor: Black\u003c\/li\u003e \u003cli\u003eApplication: Intercooler piping, charge pipe, turbo inlet\/outlet connections\u003c\/li\u003e \u003cli\u003eClamps Included: No\u003c\/li\u003e \u003cli\u003eWarranty: Mishimoto Lifetime Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eIncluded Components\u003c\/h4\u003e\u003cul\u003e \u003cli\u003e1x DuraCore™ Silicone Intercooler Boot (3.5 in. to 4.0 in., Straight Transition, Black)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eProduct Description\u003c\/h4\u003e\u003cp\u003eThe Mishimoto MMDCC-3540BK is a straight transition DuraCore™ silicone intercooler boot designed for custom charge pipe and intercooler builds that require a clean in-line step-up from a 3.5\" pipe to a 4.0\" pipe without changing direction. This makes it the ideal connector for linking different-diameter components in a direct line - such as a turbo outlet to a larger intercooler inlet, or between sections of a custom fabricated charge pipe kit where flow expands.\u003c\/p\u003e\u003cp\u003eBuilt from five layers of silicone reinforced with heat-resistant embedded fibers and lined internally with DuraCore™ synthetic material, this boot resists heat, pressure, fuel, and oil better than standard silicone alone. Reinforcing rings at each clamping zone eliminate blowout risk under sustained boost. Clamps are sold separately - T-bolt clamps are recommended for high-boost builds. Backed by the Mishimoto Lifetime Warranty.\u003c\/p\u003e","brand":"Mishimoto","offers":[{"title":"Default Title","offer_id":53483636588863,"sku":"MISMMDCC-3540BK","price":78.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0832\/7308\/9343\/files\/464b397094ca24f1625b56d6063542a7L.jpg?v=1780205222","url":"https:\/\/wcaperformance.com\/products\/mishimoto-duracore-3-5in-to-4in-transition-coupler","provider":"WCA Performance","version":"1.0","type":"link"}