{"product_id":"brian-crower-exhaust-valve-guides-for-honda-d16-set-of-8","title":"Brian Crower Exhaust Valve Guides for Honda D16","description":"\u003cul\u003e\n\u003cli\u003ePrecision engineering for optimal alignment \u003c\/li\u003e\n\u003cli\u003eDurable materials for high-temperature operations \u003c\/li\u003e\n\u003cli\u003ePromotes seamless airflow and performance \u003c\/li\u003e\n\u003cli\u003eBuilt for longevity and reliability \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=\"#TechnicalData\"\u003eTechnical Data\u003c\/a\u003e\u003c\/li\u003e   \u003cli\u003e\u003ca href=\"#Included\"\u003eIncluded\u003c\/a\u003e\u003c\/li\u003e  \u003cli\u003e\u003ca href=\"#InstallGuide\"\u003eInstall Guide\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\u003eBrian Crower Exhaust Valve Guides for Honda D16 \u003c\/h3\u003e\n\u003cp\u003eThe\u003cstrong\u003e Brian Crower BC3909 Exhaust Valve Guides\u003c\/strong\u003e are replacement cylinder head valve guides intended for the exhaust valve positions on Honda D series VTEC cylinder heads used with D16Y8 and D16Z6 applications. In the valvetrain system, the valve guide is the pressed in bore in the cylinder head that supports and locates the valve stem as the valve opens and closes, maintaining stem alignment to the valve seat while providing a controlled running clearance for lubrication and heat transfer.\u003c\/p\u003e\n\n\u003cp\u003eThis set is specified as \u003cstrong\u003e5.5 mm exhaust valve guides\u003c\/strong\u003e, matching the 5.5 mm valve stem size used by these applications. They are commonly selected during a cylinder head rebuild when the original guides are worn beyond service limits, when new valves are being fitted and correct stem to guide clearance must be restored, or when an installer prefers an aftermarket guide material for a performance rebuild rather than installing an original equipment replacement guide.\u003c\/p\u003e\n\n\u003cp\u003eBC3909 guides are specified as \u003cstrong\u003eManganese Silicon Aluminum Bronze\u003c\/strong\u003e. This is a distinct material choice versus many original equipment style iron guides, and it is provided as a dedicated exhaust guide set rather than a mixed intake and exhaust assortment.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer part number\u003c\/strong\u003e: BC3909\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct SKU\u003c\/strong\u003e: BRC-BC3909\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePosition\u003c\/strong\u003e: Exhaust valve guides\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity\u003c\/strong\u003e: Set of 8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eValve stem size\u003c\/strong\u003e: 5.5 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Manganese Silicon Aluminum Bronze\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCompatibility notes\u003c\/strong\u003e: This set is published for Honda D-series VTEC applications including D16Y8 and D16Z6. Some fitment listings also associate BC3909 with additional D series engines beyond D16Y8 and D16Z6, so confirm by engine code and cylinder head configuration rather than chassis alone before machining or installation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eInstallation and machining considerations\u003c\/strong\u003e: Valve guides are a press fit service part installed into the cylinder head and typically require machine shop operations to size the inside diameter to the final valve stem clearance after installation. Plan on verifying valve stem to guide clearance, valve seat concentricity, and performing any required seat work after guide installation. This product does not represent an external geometry change and does not alter valve timing or lift on its own, but it can affect service clearances depending on how the guides are installed and finished.\u003c\/p\u003e\n\u003c\/li\u003e\n\n \n\u003cli id=\"VehicleFitment\"\u003e\n \u003cp\u003e\u003cspan class=\"tag\"\u003e1992-1995 Honda Civic \u003c\/span\u003e\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cspan class=\"tag\"\u003e1996-2000 Honda Civic \u003c\/span\u003e\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003cspan class=\"tag\"\u003e1993-1997 Honda Civic del Sol \u003c\/span\u003e\u003c\/p\u003e\n\u003cbr\u003e \n\u003c\/li\u003e\n\n\n\n\n\u003cli id=\"TechnicalData\"\u003e\n\n\u003c\/li\u003e\n\n\n\n \n\u003cli id=\"Included\"\u003e\n\n\u003c\/li\u003e\n\n\n\n\n\n\n\n\n\n\n\n\u003cli id=\"InstallGuide\"\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n","brand":"Brian Crower","offers":[{"title":"Default Title","offer_id":69631522668578,"sku":"BRC-BC3909","price":81.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2218\/5701\/files\/BRC-BC3909_s3dc.jpg?v=1793812440","url":"https:\/\/www.hybrid-racing.com\/products\/brian-crower-exhaust-valve-guides-for-honda-d16-set-of-8","provider":"Hybrid Racing","version":"1.0","type":"link"}