BMW B58 Exhaust/Turbo Manifold Gasket - Genuine OEM 11657643149 for F20 F21 F22 F23 F30 F31 F34 F32 F33 F36 G11 G12 G30 G31 G32 X3 G01 (M140i M240i 340i 440i 540i 640i 740i X3 M40i/M40ix)

BMW B58 Manifold To Cylinder Head Seal 11657643149, Original Equipment Fitment For F Series And G Series Models

Stop exhaust leaks and protect your turbocharger with the factory BMW manifold to head gasket for the B58B30 straight six. This original equipment sealing gasket restores a tight, leak free joint between the exhaust manifold and cylinder head, helping maintain boost response, reduce cold start ticking, and prevent exhaust fumes in the engine bay. Ideal when replacing a turbo, swapping a downpipe, refitting the manifold or carrying out preventative maintenance on any B58 powered BMW.

Part number: 11657643149

Why choose this OEM manifold to head gasket

• Exact BMW geometry for a precise, airtight seal that keeps your B58 performing properly on stock or tuned cars.
• Engineered to withstand high temperatures and pressure from turbocharged use, track work and daily driving.
• Perfect to install during turbo removal, manifold refit or downpipe upgrades to avoid reusing tired seals.
• Original BMW component, dependable fit first time with no guesswork.

We supply and fit these regularly on B58 platforms and they simply do the job. Our customers report quiet cold starts, no leaks and long term reliability from using the genuine part.

Fitment, BMW B58 Applications

Engine: B58, B58B30

• 1 Series F20, F21 LCI: M140i, M140ix
• 2 Series F22, F23 LCI: M240i, M240ix
• 3 Series F30, F31, F34 LCI: 340i, 340ix
• 4 Series F32, F33, F36 LCI: 440i, 440ix
• 5 Series G30, G31: 540i, 540ix
• 6 Series G32 GT: 640i, 640ix
• 7 Series G11, G12: 740i, 740ix, 740Li, 740Lix
• X3 G01: M40i, M40ix

Covers popular chassis codes F20, F21, F22, F23, F30, F31, F34, F32, F33, F36, G11, G12, G30, G31, G32 and X3 G01.

Popular search terms

• BMW B58 manifold to head gasket 11657643149
• B58 turbo manifold seal, turbocharger gasket B58B30
• M140i manifold gasket, M240i exhaust seal ring
• 340i header gasket, 440i exhaust flange gasket
• 540i manifold to cylinder head seal, 640i OEM gasket
• 740i exhaust leak repair gasket, X3 M40i turbo manifold gasket
• BMW original equipment gasket, OE BMW 11657643149

Installation

Professional fitting recommended. Book with MJ Modifications, Warwickshire. Request a quote at info@mjmodifications.co.uk.

Tip, always use a fresh gasket whenever the exhaust manifold or turbo is removed to guarantee a reliable, leak free refit.

Compatibility check

We can confirm fitment before dispatch. Add your UK registration or the last 7 digits of your VIN at checkout and we will verify suitability for your specific vehicle.

Manufacturer and warranty

Manufacturer: BMW

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

Why buy from us

• Trusted supplier and fitter of B58 parts with happy repeat customers.
• Genuine BMW component for a perfect result first time.
• Competitive pricing, fast dispatch and expert support.

Restore proper sealing and performance on your B58. Order BMW part 11657643149 today.