Genuine BMW Valve Stem Seals (Valve Stem Oil Seal Kit) N52 N53 N54 N55 S55 B58 - Fits 135i 235i 335i 435i 535i 640i 740i M2 M3 M4 Z4 X3 X4 X5 X6 - OE 11340034068

BMW Inline-Six Valve Guide Oil Seal Set, OE 11340034068

Stop oil usage, cure that blue haze at idle and keep your straight-six running sweet with this genuine BMW valve guide seal set. Engineered by BMW for the N52, N53, N54, N55, S55 and B58 petrol engines, this is the correct factory part that restores proper oil control around the valve stems for long-term reliability and clean running.

We install these seals on our own builds and customer cars and the results speak for themselves. Crisp cold starts, no puff of smoke after idling, reduced oil consumption and happy MOT emissions. If you are refreshing a cylinder head, chasing oily spark plugs or tackling a smoking-on-idle issue, this is the right replacement part.

Why this genuine BMW seal set is the smart choice

• Exact-fit OE solution for BMW inline-six petrol engines, both naturally aspirated and turbocharged
• Addresses oil burning through the valve guides, blue exhaust haze, oil-fouled plugs and the burnt-oil smell after traffic queues
• Maintains correct valve lubrication without excessive oil ingress to the combustion chamber
• Factory quality and materials designed to withstand heat cycles and boost on N54, N55, S55 and B58 applications
• Proven on our workshop cars and across many customer installs

Compatible BMW engines

N52, N53, N54, N55, S55, B58.

Key vehicle applications

Popular models fitted with the engines above include 135i, 235i, 335i, 435i, 535i, 640i, 740i, M2, M3, M4, plus Z4 roadster and X-series SUVs such as X3, X4, X5 and X6.

Chassis coverage

• 1 Series: E81, E87 and LCI, E88, E82, F20 and LCI, F21 and LCI
• 2 Series: F22 and LCI, F23 and LCI, F87 M2 and LCI
• 3 Series: E90, E91, E92, E93 and LCI variants, F30 and LCI, F31 and LCI, F34 and LCI, F80 M3 and LCI
• 4 Series: F32 and LCI, F33 and LCI, F36 and LCI, F82 and F83 M4 including LCI
• 5 Series: E60, E61 and LCI, F07 GT and LCI, F10 and LCI, F11 and LCI, G30, G31
• 6 Series: E63, E64 and LCI, F06 Gran Coupé and LCI, F12 and LCI, F13 and LCI, G32 GT
• 7 Series: E65, E66, F01 and LCI, F02 and LCI, G11, G12
• SUV and Roadster: X1 E84, X3 E83 LCI, X3 F25, X3 G01, X4 F26, X4 G02, X5 E70 and LCI, X5 F15, X6 E71, X6 F16, Z4 E85, E86, E89

Headline fits include enthusiast favourites like 335i and 435i, as well as performance heroes M2, M3 and M4.

Part number

11340034068 also searched as 11 34 0 034 068 and 1134 0034 068.

Also searched as

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Fitment check

We confirm compatibility before dispatch. Add your UK registration or the last 7 characters of your VIN at checkout and we will verify this seal set suits your car.

Professional fitting

Need it installed properly the first time. Book workshop fitting with MJ Modifications, Warwickshire. Email info@mjmodifications.co.uk for a quote.

Warranty

Two-year manufacturer warranty for UK customers and one-year manufacturer warranty for international customers when a VIN is provided at checkout on compatible vehicles.

Good to know

• Ideal to replace during cylinder head refresh, valve work or timing component service
• Genuine BMW part for best longevity and fitment