{"product_id":"spectre-oil-breather-cap-3-4in-push-in","title":"Spectre Oil Breather Cap 3\/4in. (Push-In)","description":"\u003cdiv\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e4300\u003c\/span\u003e   |   \u003cstrong\u003eUPC:\u003c\/strong\u003e 089601430003\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch4\u003e\u003cstrong\u003eSpectre Oil Breather Cap 3\/4in. (Push-In)\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe Spectre Oil Breather Cap 3\/4in. (Push-In) stands as the essential valve cover accessory for classic and performance engines. It features a chrome-plated steel housing with an internal baffle that prevents oil splash while delivering superior crankcase ventilation that outperforms basic grommet caps or twist-on breathers by maintaining consistent airflow without leaks or oil misting during high-RPM operation. Designed for universal fitment on valve covers with 3\/4-inch to 1-1\/4-inch breather holes, this push-in cap integrates seamlessly with stock or aftermarket setups to reduce pressure buildup and extend engine life. This ensures builders and daily drivers experience cleaner engine bays and reliable performance compared to exposed PCV valves or undersized filters. Crafted from durable triple-chrome plated steel for corrosion resistance and easy cleaning, it provides a polished look that complements show cars or hot rods better than plastic alternatives. It also supports emissions compliance where applicable for a straightforward upgrade that enhances overall engine breathing across street, strip, or track conditions.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eChrome-Plated Steel Housing – Triple-plated for rust resistance and high-shine finish\u003c\/li\u003e\n\u003cli\u003eInternal Baffle Design – Blocks oil splash while allowing unrestricted air flow\u003c\/li\u003e\n\u003cli\u003ePush-In Installation – Fits 3\/4-inch to 1-1\/4-inch holes without tools\u003c\/li\u003e\n\u003cli\u003eSuperior Ventilation – Reduces crankcase pressure for better ring seal and power\u003c\/li\u003e\n\u003cli\u003eUniversal Compatibility – Works with small-block Chevy, Ford, Mopar, and imports\u003c\/li\u003e\n\u003cli\u003eEasy Maintenance – Removable foam filter for cleaning or replacement\u003c\/li\u003e\n\u003cli\u003eUSA-Made Durability – Built to last with precision stamping\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eUniversal fit for valve covers with 3\/4-inch to 1-1\/4-inch breather holes\u003c\/li\u003e\n\u003cli\u003eRecommend grommet kit 5333 or 5339 for 1-1\/4-inch holes\u003c\/li\u003e\n\u003cli\u003eCalifornia legal for racing vehicles only, check CARB status\u003c\/li\u003e\n\u003cli\u003eReplaceable foam filter available as 5331\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e – Spectre limited lifetime warranty against defects\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eClean breather hole on valve cover, insert cap by hand\u003c\/li\u003e\n\u003cli\u003eFor larger holes, use included or optional grommet\u003c\/li\u003e\n\u003cli\u003eSecure by pushing firmly until flush, no tools needed\u003c\/li\u003e\n\u003cli\u003eTest for leaks at idle, adjust if necessary\u003c\/li\u003e\n\u003cli\u003eTools required – None, est. time: 2-5 min\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eThis Part Fits\u003c\/h4\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\" style=\"width: 100%; max-width: 800px;\"\u003e\n\u003cthead style=\"background: #f4f4f4;\"\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003cth\u003eExamples\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Covers\u003c\/td\u003e\n\u003ctd\u003eSmall Block Chevy, Ford Windsor, Mopar LA\u003c\/td\u003e\n\u003ctd\u003e3\/4-inch to 1-1\/4-inch holes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImports\u003c\/td\u003e\n\u003ctd\u003eHonda B\/D Series, Nissan SR20\u003c\/td\u003e\n\u003ctd\u003eUniversal breather fit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCustom Builds\u003c\/td\u003e\n\u003ctd\u003eAny Engine\u003c\/td\u003e\n\u003ctd\u003eAftermarket valve covers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eWhat's Included in the Purchase\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Chrome Push-In Oil Breather Cap 3\/4in.\u003c\/li\u003e\n\u003cli\u003eFoam Filter Insert\u003c\/li\u003e\n\u003cli\u003eInstallation Guide (PDF)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePart Weight:\u003c\/strong\u003e 0.3 lbs | \u003cstrong\u003eShipping Box Dimensions:\u003c\/strong\u003e 6 in × 4 in × 2 in\u003c\/p\u003e\n\u003ch4\u003eWhy Choose Spectre Oil Breather Cap?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eEngineered for universal valve cover use with proven splash control\u003c\/li\u003e\n\u003cli\u003eTriple-chrome finish for show-quality appearance\u003c\/li\u003e\n\u003cli\u003eUSA-made with reliable ventilation for performance engines\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eQ: Does it fit 1-1\/4-inch holes?\u003cbr\u003eA: Yes with grommet kit 5333 or 5339\u003c\/li\u003e\n\u003cli\u003eQ: Is it CARB legal?\u003cbr\u003eA: For racing only in California, check spectreperformance.com\u003c\/li\u003e\n\u003cli\u003eQ: Replaceable filter?\u003cbr\u003eA: Yes, foam insert SKU 5331 available\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eShipping \u0026amp; Handling\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eMethod – Ground shipping, expedited available\u003c\/li\u003e\n\u003cli\u003eAvailability – In stock, ships within 1-2 business days\u003c\/li\u003e\n\u003cli\u003ePackaging – Protective polybag to prevent scratches\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Spectre","offers":[{"title":"Default Title","offer_id":43831250321487,"sku":"SPE4300","price":17.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/spectre-4300-breather-cap_01.jpg?v=1764014626","url":"https:\/\/www.blackopsautoworks.com\/products\/spectre-oil-breather-cap-3-4in-push-in","provider":"Black Ops Auto Works","version":"1.0","type":"link"}