{"product_id":"manley-90-99-mazda-miata-1-8l-bp056-dohc-16-intake-34mm-stainless-race-master-valves","title":"Manley 90-99 Mazda Miata 1.8L (BP056) DOHC 16 Intake 34mm Stainless Race Master Valves","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e11104-8\u003c\/span\u003e | \u003cstrong\u003eUPC:\u003c\/strong\u003e 807298055855\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eManley 1994-2005 Mazda Miata 1.8L (BP056) DOHC 16 Intake 34mm Stainless Race Master Valves\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThis Manley 11104-8 set includes 16 NK-842 intake valves sized 34mm for direct replacement in 1994-2005 Mazda Miata 1.8L BP056 DOHC cylinder heads on Base and LS models. NK-842 valves feature stainless steel construction with chrome stems for wear resistance and swirl polished faces to improve airflow and throttle response in high-rev applications. Expect consistent sealing and power delivery even in alcohol-fueled racing setups with 110.95mm overall length and 6.980mm stem diameter matching OEM specs.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStainless Steel Construction:\u003c\/strong\u003e NK-842 one-piece forged stainless valves withstand extreme heat and pressure for dependable performance in track engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChrome Stems and Hard Tips:\u003c\/strong\u003e Chrome-plated stems and hardened tips reduce friction and prolong life during aggressive valve train operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwirl Polished and Fully Machined:\u003c\/strong\u003e Swirl polishing under the head plus machined margins and faces increase gas flow efficiency and combustion quality\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace Master Straight Stem Design:\u003c\/strong\u003e 34.00mm head diameter 6.980mm stem and 110.95mm length ensure precise fit in BP056 heads for racing cylinder head setups\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlcohol Engine Compatibility:\u003c\/strong\u003e Design handles methanol or alcohol fuels without compromising sealing or durability for reliable high-output operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSet of 16 intake valves matches OEM dimensions for direct drop-in replacement in BP056 DOHC heads\u003c\/li\u003e\n\u003cli\u003eInspect valve seats guides and clearances before installation to maintain proper operation\u003c\/li\u003e\n\u003cli\u003eShips in protective foam-lined box measuring 12in x 8in x 4in with 2.2 lbs net weight\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional installation recommended.\u003c\/li\u003e\n\u003cli\u003eRemove cylinder head and use valve spring compressor tool for access and replacement\u003c\/li\u003e\n\u003cli\u003eWorks with stock retainers locks and performance springs up to 1.200in maximum lift\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eThis Part Fits\u003c\/h4\u003e\n\u003ctable border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eSubmodel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1994-1997\u003c\/td\u003e\n\u003ctd\u003eMazda\u003c\/td\u003e\n\u003ctd\u003eMiata\u003c\/td\u003e\n\u003ctd\u003eBase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1999-2005\u003c\/td\u003e\n\u003ctd\u003eMazda\u003c\/td\u003e\n\u003ctd\u003eMiata\u003c\/td\u003e\n\u003ctd\u003eBase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2000-2005\u003c\/td\u003e\n\u003ctd\u003eMazda\u003c\/td\u003e\n\u003ctd\u003eMiata\u003c\/td\u003e\n\u003ctd\u003eLS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhy Choose Manley?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eDecades of racing valve expertise supports Mazda Miata engine builds around the world\u003c\/li\u003e\n\u003cli\u003eOne-piece forged valves endure 10000 RPM operation without failure\u003c\/li\u003e\n\u003cli\u003eExact tolerances provide drop-in fit and instant performance improvements\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Will these valves fit my 1999 Miata NB 1.8L BP engine?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Yes the 34mm NK-842 valves match 1994-2005 Miata 1.8L BP056 DOHC heads in Base and LS models\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What material and finish do these valves have?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e One-piece stainless steel with chrome stems hard tips swirl polished undercuts and machined faces\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What warranty covers these valves?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Manley offers a one-year unlimited mileage warranty against manufacturing defects when installed properly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eShipping \u0026amp;amp. Handling\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e UPS Ground\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e In stock - ships same or next business day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Secure foam-lined box 12in x 8in x 4in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 2.2 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":43743623708751,"sku":"MAN11104-8","price":211.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/manley-90-99-mazda-miata-1_8l-bp056-dohc-16-intake-34mm-stainless-race-master-valves-manley-performance.jpg?v=1767414855","url":"https:\/\/www.blackopsautoworks.com\/products\/manley-90-99-mazda-miata-1-8l-bp056-dohc-16-intake-34mm-stainless-race-master-valves","provider":"Black Ops Auto Works","version":"1.0","type":"link"}