{"product_id":"honda-k20z3-egr-passage-18712-rra-a00","title":"Honda K20Z3 EGR Passage\/Water Neck 18712-RRA-A00","description":"\u003cul\u003e\n\u003cli\u003eGenuine Honda Product \u003c\/li\u003e\n\u003cli\u003eDirect Factory Replacement Part \u003c\/li\u003e\n\u003cli\u003eFits K20Z3 Engines \u003c\/li\u003e\n\u003cli\u003eIdeal for Maintenance, Engine Rebuilds, or Restorations \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- split --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli\u003e\u003ca class=\"active\" href=\"#Description\"\u003eDescription\u003c\/a\u003e\u003c\/li\u003e\n \u003cli\u003e\u003ca href=\"#VehicleFitment\"\u003eVehicle Fitment\u003c\/a\u003e\u003c\/li\u003e   \u003cli\u003e\u003ca href=\"#Included\"\u003eIncluded\u003c\/a\u003e\u003c\/li\u003e \u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\n\n\u003cli class=\"active\" id=\"Description\"\u003e\n\u003ch3\u003eHonda K20Z3 EGR Passage \/ Water Neck (18712-RRA-A00)\u003c\/h3\u003e\n\n\u003cp\u003eSKU: OHA-18712-RRA-A00. This is the OEM K20Z3 EGR passage, also known as the Civic Si EGR water neck. Honda used it on the 2006 to 2011 Civic Si with the K20Z3, so if you are chasing the right 06-11 Civic Si water neck, this is the factory part. It pulls double duty as a K20Z3 coolant passage part and a K20Z3 EGR system component, it routes coolant through the Honda K20Z3 coolant neck and gives the EGR setup the ports it needs. When the sealing surface gets pitted, corrosion builds up, or the neck stays crusty no matter how much you scrub, a K20Z3 water neck replacement stops being a maybe.\u003c\/p\u003e\n\n\u003cp\u003eWhat you actually notice on the car looks boring but annoying. Coolant weeping at the gasket, hoses that never quite clamp down right, or the slow mystery loss that makes you recheck every clamp, twice. A fresh OEM Honda water neck K20Z3 puts you back on known good fitment with the factory hoses and hardware, which matters when you want it to seal the first time..\u003c\/p\u003e\n\n\u003cp\u003eIf you are doing a clean build, this also helps the engine bay look right. Think showroom quality, clean silver finish, no stained casting, no corrosion freckles. Pair it with the \u003ca href=\"https:\/\/www.hybrid-racing.com\/products\/honda-k-series-egr-passage-gasket-18714-raa-a01?_pos=1\u0026amp;_psq=egr+\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\"\u003eEGR Passage Gasket\u003c\/a\u003e, \u003ca href=\"https:\/\/www.hybrid-racing.com\/products\/honda-egr-valve-gasket-18715-pb2-000?_pos=3\u0026amp;_sid=d33301b9e\u0026amp;_ss=r\" target=\"_blank\"\u003eEGR Valve Gasket\u003c\/a\u003e, and \u003ca href=\"https:\/\/www.hybrid-racing.com\/products\/honda-exhaust-gas-recirculation-valve-cover-egr-18711-pm1-j00?_pos=2\u0026amp;_sid=d33301b9e\u0026amp;_ss=r\" target=\"_blank\"\u003eEGR Valve Top Plate\u003c\/a\u003e if you want the whole area refreshed, not half done.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eOEM Honda water neck K20Z3, direct fit Civic Si EGR water neck\u003c\/li\u003e\n  \u003cli\u003eOne housing handles the Honda K20Z3 EGR passage and the coolant routing, it is the Honda K20Z3 cooling part that ties both jobs together\u003c\/li\u003e\n  \u003cli\u003eRestores proper coolant flow through the Honda K20Z3 coolant neck, which helps keep temps consistent when your old neck leaks or restricts\u003c\/li\u003e\n  \u003cli\u003eDirect replacement for the Honda Civic Si EGR fitting and K20Z3 engine water neck assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eVehicle Compatibility\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e2006-2011 Honda Civic Si\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n \n\u003cli id=\"VehicleFitment\"\u003e\n 2006-2011 Honda Civic Si \n\u003c\/li\u003e\n\n\n\n\n\n\n \n\u003cli id=\"Included\"\u003e\n(1) EGR Coolant Passage\n\u003c\/li\u003e\n\n\n\n\n\n\n\n\n\n\n\n\n\u003c\/ul\u003e\n","brand":"Honda","offers":[{"title":"Default Title","offer_id":44748342493218,"sku":"OHA-18712-RRA-A00","price":142.63,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2218\/5701\/files\/honda-k20z3-egr-passage-water_gfs4.jpg?v=1768603879","url":"https:\/\/www.hybrid-racing.com\/products\/honda-k20z3-egr-passage-18712-rra-a00","provider":"Hybrid Racing","version":"1.0","type":"link"}