{"product_id":"kc-turbos-upgraded-exhaust-manifolds-bellowed-up-pipe-kit-for-1999-5-2003-ford-f-250-f-350-f-450-f-550-super-duty-7-3l-powerstroke-l99","title":"KC Turbos Upgraded Exhaust Manifolds \u0026 Bellowed Up Pipe Kit For 1999.5-2003 Ford 7.3L Powerstroke F-250\/F-350\/F-450\/F-550 (L99)","description":"\u003cp\u003eUpgrade your 1999.5-2003 Ford F-250\/F-350\/F-450\/F-550 7.3L Powerstroke (L99) with the KC Turbos Upgraded Exhaust Manifolds. The factory 7.3L manifolds tend to deteriorate and crack over time, which leads to uneven clamping, broken studs, blown gaskets and power lost to exhaust leaks. KC's redesigned manifolds use thicker mounting flanges for an even seal against the cylinder head and port-matched runners that flow over 20% more than stock, reducing back pressure and improving turbo efficiency. This kit pairs the manifolds with the KC Turbos Upgraded Bellowed Up-Pipe Kit for the 1999.5-2003 Ford 7.3L Powerstroke, so the up-pipe joints are sealed at the same time.\u003c\/p\u003e\u003cp\u003eKC Turbos casts these manifolds from high-silicon molybdenum iron, which holds up to thermal warping and cracking far better than conventional cast iron. The up-pipe mounting face is re-engineered for better alignment and clamping under load, and the larger, fully machined sealing surface spreads heat evenly to minimize hot spots. Each pair carries an integrated EGT probe port and retains the factory EBP tube port, both with NPT plugs preinstalled, plus 16 OEM-style interference thread flange bolts that hold torque and resist backing out. The KC bellowed up-pipe kit eliminates the leak-prone factory donut gaskets, using durable steel crush gaskets and a bellowed design that absorbs expansion and contraction.\u003c\/p\u003e\u003cp\u003eInstallation reuses the factory exhaust manifold to up-pipe bolts, which are not included. A thread chaser is recommended to clean the cylinder head bolt holes before install so the new hardware reaches proper torque. The OEM-style interference thread bolts may feel like they are cross-threading as they go in; this is normal, since that interference with the head threads is what keeps them from backing out.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDirect bolt-on for 1999.5-2003 Ford 7.3L Powerstroke (L99)\u003c\/li\u003e\n\u003cli\u003eHigh-silicon molybdenum cast iron resists warping and cracking\u003c\/li\u003e\n\u003cli\u003ePort-matched runners flow over 20% more than stock manifolds\u003c\/li\u003e\n\u003cli\u003eThicker mounting flanges seal evenly against the cylinder head\u003c\/li\u003e\n\u003cli\u003eBellowed up-pipe design absorbs expansion and contraction\u003c\/li\u003e\n\u003cli\u003eIntegrated EGT probe port and factory EBP port, both plugged\u003c\/li\u003e\n\u003cli\u003eEliminates the leak-prone factory up-pipe donut gaskets\u003c\/li\u003e\n\u003cli\u003e16 OEM-style interference thread bolts resist backing out\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e \u003c\/p\u003e\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: KC Turbos\u003c\/li\u003e\n\u003cli\u003eProduct: Upgraded Exhaust Manifolds (Pair) and Bellowed Up-Pipes\u003c\/li\u003e\n\u003cli\u003eUp-Pipes: KC Turbos Upgraded Bellowed Up-Pipe Kit\u003c\/li\u003e\n\u003cli\u003eMaterial: High-silicon molybdenum (High-SiMo) cast iron\u003c\/li\u003e\n\u003cli\u003eUp-Pipe Seal: Durable steel crush gaskets replace the factory donut gaskets\u003c\/li\u003e\n\u003cli\u003eFlow: Over 20% increase vs stock manifolds\u003c\/li\u003e\n\u003cli\u003eEGT Port: Integrated, NPT plug preinstalled\u003c\/li\u003e\n\u003cli\u003eEBP Port: Factory EBP tube port retained, NPT plug preinstalled\u003c\/li\u003e\n\u003cli\u003eGaskets: Stainless steel\u003c\/li\u003e\n\u003cli\u003eMounting Hardware: 16 OEM-style interference thread flange bolts\u003c\/li\u003e\n\u003cli\u003eManifold Bolt Torque: 45 lb-ft (61 Nm)\u003c\/li\u003e\n\u003cli\u003eEngine: Ford 7.3L Powerstroke (L99)\u003c\/li\u003e\n\u003cli\u003eWarranty: 1 Year\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e \u003c\/p\u003e\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eIncluded:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e(2) KC Upgraded Exhaust Manifolds (Driver and Passenger)\u003c\/li\u003e\n\u003cli\u003e(2) Stainless Steel Exhaust Manifold Gaskets\u003c\/li\u003e\n\u003cli\u003e(16) OEM-Style Interference Thread Exhaust Flange Bolts\u003c\/li\u003e\n\u003cli\u003e(2) Preinstalled NPT Plugs (EGT and EBP Ports)\u003c\/li\u003e\n\u003cli\u003e(1) KC Turbos Upgraded Bellowed Up-Pipe Kit\u003c\/li\u003e\n\u003cli\u003e(1) Steel Crush Gasket Set\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e \u003c\/p\u003e\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1999.5-2003 Ford F-250 Super Duty 7.3L Powerstroke (L99)\u003c\/li\u003e\n\u003cli\u003e1999.5-2003 Ford F-350 Super Duty 7.3L Powerstroke (L99)\u003c\/li\u003e\n\u003cli\u003e1999.5-2003 Ford F-450 Super Duty 7.3L Powerstroke (L99)\u003c\/li\u003e\n\u003cli\u003e1999.5-2003 Ford F-550 Super Duty 7.3L Powerstroke (L99)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e \u003c\/p\u003e\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1 Year Warranty\u003c\/li\u003e\n\u003cli\u003eNot available for sale in the state of California\u003c\/li\u003e\n\u003cli\u003eThe up-pipe kit does not fit Early 1999 (E99) trucks; Not designed to fit van applications\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KC Turbos","offers":[{"title":"Default Title","offer_id":67884144427329,"sku":"302874 | 300323","price":789.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0645\/2504\/1821\/files\/302874_300323_kit.jpg?v=1792004457","url":"https:\/\/rudysdiesel.com\/products\/kc-turbos-upgraded-exhaust-manifolds-bellowed-up-pipe-kit-for-1999-5-2003-ford-f-250-f-350-f-450-f-550-super-duty-7-3l-powerstroke-l99","provider":"Rudy's Performance Parts","version":"1.0","type":"link"}