{"product_id":"rb-bmw-n54-pcv-valve-screw-on-cap-135i-335i","title":"RB (Rob Beck) BMW N54 Valve Cover\/Rocker Cover PCV Port Breather Cap Plug, Threaded Screw-In w\/ O-Ring – Crankcase Service Cap – Fits 1M, 135i E82, 335i E90\/E91\/E92\/E93, 535i E60\/E61, Z4 35i E89","description":"\u003cdiv class=\"product__description rte\"\u003e\n  \u003ch2\u003eRob Beck N54 Rocker Cover Breather Cap with O-Ring\u003c\/h2\u003e\n\n  \u003cp\u003eSecure your N54 crankcase system with the RB threaded breather cap. This direct-fit, screw-in replacement for the fragile factory plastic piece delivers a tight, dependable seal on the N54 rocker cover PCV port, helping to prevent boost leaks and oil misting while keeping your positive crankcase ventilation system working as it should. A fresh O-ring is pre-installed for a clean, airtight fit.\u003c\/p\u003e\n\n  \u003cp\u003eWe use this part on our own builds and for customer cars, and feedback has been excellent. It is a simple reliability upgrade that saves you from replacing an entire valve cover just because the original cap has cracked.\u003c\/p\u003e\n\n  \u003ch3\u003eKey benefits\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eThread-in cap for the N54 rocker cover PCV\/breather port with included O-ring for a leak-free seal\u003c\/li\u003e\n    \u003cli\u003eTough construction that resists heat cycles and will not fracture like the OEM plastic plug can\u003c\/li\u003e\n    \u003cli\u003eHelps reduce vacuum leaks, rough idle and oil vapour issues caused by a failed stock cap\u003c\/li\u003e\n    \u003cli\u003eIdeal partner for the RB upgraded PCV check valve for a complete N54 crankcase solution\u003c\/li\u003e\n    \u003cli\u003eCost-effective fix that avoids buying a full rocker cover only to replace the cap\u003c\/li\u003e\n    \u003cli\u003eQuick, easy install for DIY or professional fitting\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eFitment\u003c\/h3\u003e\n  \u003cp\u003eCompatible with BMW models powered by the N54 twin turbo engine, including:\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eBMW 1M Coupe\u003c\/li\u003e\n    \u003cli\u003eBMW 135i E82\u003c\/li\u003e\n    \u003cli\u003eBMW 335i E90, E91, E92, E93\u003c\/li\u003e\n    \u003cli\u003eBMW 535i E60, E61\u003c\/li\u003e\n    \u003cli\u003eBMW Z4 sDrive35i E89\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003eSuits all N54 engines.\u003c\/p\u003e\n\n  \u003ch3\u003eInstallation notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eSupplied with a new O-ring. Lightly oil the O-ring before fitting\u003c\/li\u003e\n    \u003cli\u003eThread in by hand and do not over-tighten to protect the rocker cover\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eCompatibility check\u003c\/h3\u003e\n  \u003cp\u003eTo ensure the correct part for your car, add your UK registration or the last 7 of your VIN at checkout and we will confirm fitment before dispatch.\u003c\/p\u003e\n\n  \u003ch3\u003eProfessional fitting\u003c\/h3\u003e\n  \u003cp\u003eInstallation available at MJ Modifications in Warwickshire. Request a quote: \u003ca href=\"mailto:info@mjmodifications.co.uk\"\u003einfo@mjmodifications.co.uk\u003c\/a\u003e\u003c\/p\u003e\n\n  \u003ch3\u003ePart number\u003c\/h3\u003e\n  \u003cp\u003eE-N54-PCVS-RB\u003c\/p\u003e\n\n  \u003ch3\u003eManufacturer\u003c\/h3\u003e\n  \u003cp\u003eRob Beck (RB)\u003c\/p\u003e\n\n  \u003ch3\u003eWarranty\u003c\/h3\u003e\n  \u003cp\u003eRob Beck does not offer warranty on this item.\u003c\/p\u003e\n\n  \u003ch3\u003ePopular search terms\u003c\/h3\u003e\n  \u003cp\u003eBMW N54 breather cap, N54 rocker cover cap, N54 crankcase breather plug, N54 PCV port cap, N54 valve cover service cap, 135i breather cover, 335i crankcase cap, 535i rocker cover plug, Z4 35i breather cap, 1M crankcase cap, E82 E90 E91 E92 E93 E60 E61 E89 N54 parts, N54 boost leak fix, N54 reliability upgrade, upgraded PCV check valve companion, N54 maintenance parts.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"RB","offers":[{"title":"Default Title","offer_id":55977386312066,"sku":null,"price":53.45,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/5445\/8937\/files\/RBBMWN54PCVVALVESCREW-ONCAP_1M_135I_335I_Z435I__01_1946x_b55d4eb9-e3e3-472d-bcf1-8da8550fc2ee_1024x1024_2x-transformed.webp?v=1763374177","url":"https:\/\/mjmodifications.co.uk\/products\/rb-bmw-n54-pcv-valve-screw-on-cap-135i-335i","provider":"MJ Modifications","version":"1.0","type":"link"}