Genuine BMW N54 Valve Cover with PCV Oil Separator + Gasket & Bolts | OEM Cylinder Head/Rocker/Cam Cover | 11127565284 | Fits 1M, 135i, 335i, 535i, 740i, X6 35i, Z4 35i(s) (E82 E88 E90 E92 E93 E60 E61 F01 F02 E71 E89)

BMW N54 Camshaft Cover Assembly with Integrated Breather and New Fasteners

Restore airtight crankcase control and stop oily residue at its source with this brand-new BMW Original Equipment cam cover assembly for the N54B30 engine, part number 11127565284. Supplied complete with the built-in crankcase ventilation oil separator, a fresh perimeter seal and the full set of new hardware, this OE top cover is the smart cure for age-related plastic cover cracks, seepage around the head, rough idle from vacuum leaks and tired PCV internals on 1M, 135i, 335i, 535i, 740i, X6 35i and Z4 35i or 35is models.

If you are chasing fumes in the cabin, an oily smell near the exhaust manifold, a whistling noise at idle or persistent oil mist around coils and plugs, the cylinder head top cover and its breather system are prime suspects. This genuine assembly gives you factory fit, factory materials and factory reliability.

Why this OE cam cover is the right choice

• All-in-one solution for the N54B30: cover, integrated crankcase breather and oil vapour separator in a single genuine unit.
• Supplied ready to install with a new gasket and fresh fixings for a clean, leak-free result.
• Exact BMW fitment for all listed chassis and trims, no guesswork or compromise.
• Proven in our workshop and customer cars, with excellent sealing and stable idle after replacement.

What you receive

• BMW OE cam cover assembly with integrated PCV oil vapour separator
• Perimeter gasket: 11127565286
• Fasteners:
  • (26) ASA bolts: 11127544369
  • (2) ASA bolts: 11127556977
  • (3) threaded studs: 11127548063

Common signs your N54 top cover assembly needs replacement

• Oil film or wetness around the rocker area and coil packs
• Hairline fractures visible in the plastic cover
• Burning oil smell from the engine bay after a drive
• Irregular idle or vac leak codes linked to the breather system

Fitment guide - N54B30 applications

M Series

• E82 1M Coupé 2011 - 2012

1 Series

• E82 135i Coupé 2006 - 2010
• E88 135i Convertible 2006 - 2010

3 Series

• E90 E91 335i Saloon and Touring 2006 - 2010
• E92 335i Coupé 2007 - 2010
• E93 335i Convertible 2007 - 2010

5 Series

• E60 535i and 535ix Saloon 2006 - 2009
• E61 535ix Touring 2006 - 2010

7 Series

• F01 740i Saloon 2007 - 2012
• F02 740Li Saloon 2007 - 2012

X Series

• E71 X6 xDrive35i 2007 - 2010

Z Series

• E89 Z4 sDrive35i and sDrive35is 2008 - 2016

Part number

11127565284

Fitment check before dispatch

For peace of mind, add your UK registration or the last 7 digits of your VIN at checkout and we will confirm compatibility for your specific N54-powered BMW before shipping.

Manufacturer and warranty

Genuine BMW part. Warranty coverage is two years for UK customers and one year for international customers when a valid VIN is provided for an eligible vehicle.

Professional installation

Want it installed correctly first time with proper torque procedure and sealing prep? Book with MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

Search terms our customers use

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