Genuine BMW Intake Manifold Gasket Set - N51 N52 N54 N55 Engines - OEM 11617547242 - Fits 135i 335i 435i 535i 640i 740i 750i Z4 3.0si E90 E92 E93 E82 F30 F10

Original BMW Inlet Manifold Sealing Kit for N51 N52 N54 N55 - OE 11617547242

Stop unmetered air and bring your straight-six back to silky-smooth running with this factory BMW inlet manifold seal kit. Designed for N51, N52, N54 and N55 petrol engines, this OE solution restores airtight sealing at the intake ports, helping to resolve idle instability, mixture faults and annoying hissing under the bonnet. We use this exact kit on our own builds and customer cars, and feedback has been consistently excellent for drivability and long-term reliability.

• Genuine BMW component - precise fit and long service life
• Prevents air leaks and vacuum loss for stable fuel trims and smooth throttle response
• Ideal whenever the plenum is removed for walnut blasting, injector work, valve cleaning or hardware upgrades
• Proven in-house at MJ Modifications and trusted by enthusiasts across the UK
• OE reference: 11617547242

Why choose this OE kit

Age and heat harden the original runner O-rings, leading to false air, light misfires and reduced performance. Replacing with BMW’s own sealing rings gives a perfect interface to the cylinder head and manifold, avoiding boost loss on turbocharged applications and ensuring consistent engine management on naturally aspirated setups.

Compatibility overview

Suits a wide range of 6-cylinder BMW petrol models using N51, N52, N54 or N55 engines, including popular 1 Series, 2 Series, 3 Series, 4 Series, 5 Series, 6 Series, 7 Series, Z4, X1, X3, X4, X5 and X6 variants. Typical examples include:

• 1 Series - 125i, 128i, 130i, 135i, M135i
• 2 Series - M235i, M2 (N55)
• 3 Series - 323i, 325i, 328i, 330i, 335i, 335is, Hybrid 3
• 4 Series - 435i
• 5 Series - 523i, 525i, 528i, 530i, 535i, Hybrid 5
• 6 Series - 630i, 640i
• 7 Series - 730i, 740i, 750i
• Z4 - 2.5i, 3.0i, 3.0si, 23i, 30i, 35i, 35is
• X models - X1 25i 28i 35i, X3 3.0i 28i 35i, X4 35i M40i, X5 3.0si 35i 40i, X6 35i 40i

Chassis coverage includes E81 E82 E85 E86 E87 E88 E89, E90 E91 E92 E93, F20 F21 F22 F23, F30 F31 F34 F32 F33 F36, F07 F10 F11, F01 F02, E70 F15, E71 E72 F16 and more with the above engines.

Part number

11617547242

When to replace

• Unstable idle, light misfire or adaptation values out of range
• Hissing from the intake area or fuel economy dropping
• After manifold removal for walnut blasting, injector replacement or PCV work
• High mileage where original seals have flattened or become brittle

Compatibility check

We will verify fitment before dispatch. Add your UK registration or the last 7 of your VIN at checkout and our team will confirm suitability for your exact vehicle.

Fitting and support

Prefer professional fitting. Book installation with MJ Modifications in Warwickshire. For a quote, email info@mjmodifications.co.uk.

Manufacturer

BMW - original equipment quality

Warranty

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

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